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Recently updated on December 29, 2021 at 12:57 am
Dear drivers, dear tuners! Individuality will be at Fahrzeugtuning capitalized. Whether technical or visual upgrade: The driver / owner decides on the criteria and adjusts the driving behavior or the performance accordingly. The tuning can do it independently or through specialized expert farms be made. On the other hand, the framework in terms of the possibilities for refining or optimizing the vehicle is increasing by the legislature pretend. The TÜV, the Dekra, the KüS and the GTÜ are test organizations that offer a wide range of specially trained examiners and assessment tools is available. Even before the tuning is carried out, the engineers support the driver / tuner with their expertise.
tuning blog - tuning guide
The following guide describes the main and most common aspects in the Practice. One should finally when tuning discord secured be. So here comes a post for more safety and Overview when tuning.
Tuning, extension, conversion - tuning guide
Who is only interested in very specific points our guide iIf you are interested, you can use the following jump labels to navigate directly to the desired topic with just one click. And just as quickly you can return to this overview from the selected menu item with just one click. However, we recommend our readers to always read through the entire article. Some menu items are only really comprehensible and understandable once the complete information article has been read.
Nothing is left to chance - rules and expert opinions when tuning
In hardly any other area does the "See and be seen“ such a high level of relevance as in the Tuning scene. A few are often used Tricksto the desired level awareness to achieve. Wheels- and tire conversions are particularly popular. However, they should not be neglected either Spoiler, Exhaust and suspension conversions. They characterize the picture as well as one of the core pieces in the tuning area: The engine tuning. As promising as the optics or the sound may be: Not everything is allowed!
The legislature has clearly stated what allowed is and what not. approval for the vehicle may be lost when the acceptance not by a expert organization like the TÜV, the Dekra, the KüS or the GTÜ. As a result, usually one Update (Technical term: Change acceptance according to § 19 (3) StVZO) the Vehicle papers in the Admissions office be performed. However, the acceptance will only be successfully be if all prescribed Test certificates can be presented. It refers to Partial report or Part approvals. 
Partial approvals have priority
- permits after special regulations
operating permits for vehicle parts (general operating permit ABE) - Approvals for the type of construction (approvals according to EC law, e.g. EC type-approval) and General type approval (ABG)
Partial report inform regarding A- or Extension of a accessorywhether a vehicle is still in compliance with the regulations. Create the so-called "technical services" Teilegutachten (TGA). These are accredited by the KBA and are supplemented by specialized test laboratories and institutes.
In summary:
- Is there on the vehicle effects from that Exhaust- or Noise behavior in hindsight or is a Danger situation in the course of conversion to be expected, the operating permit on the tuned vehicle expires as well as if amendments in the Vehicle type available.
- A smooth process is possible if partial permits as a Test certificates are present, the without restrictions or special instructions for cultivation be available. In addition, then no Acceptance of changes predetermined be. In this case, on a conversion test or Supplement in the Vehicle documents waived .
- The vehicle must discord then be subject to inspection by a monitoring organization if in the partial permits modification acceptance required is. So he can regulation modification verified .
- Are merely Teilegutachten available is one modification acceptance to perform.
All change acceptances are carried out in practice by the respective inspector written. Together with the test certificates the vehicle owner must send the test confirmation with the Vehicle documents at an inspection ready. Subsequently, the certificate for the template to change the Vehicle papers be used at the admissions office. These were the official requirements for the inclined tuner.
It depends on a good preparation!
Not always the processes in reality have to be so complicated. Is a Tuning specialist dealer conscientiously, the customer will be informed in the shop or in the course of the order whether the enclosed test certificates Details are found which may be a modification acceptance require. However, if the tuning projects are of a larger nature, for example if a Beauty or power cure in the house, they should special restrictions of the test certificates precisely educated become. It could possibly lead to one negative mutual influence between the different Modification- and change measures kommen.
Example of negative mutual influence:
During the assembly of Tubes and wheels with greater width on a production vehicle possibly still without problems can be realized is the Freedom of movement of tire/wheel combination Do NOT spread pesto on this layer! given - especially if the bolide parallel lowered becomes. There will be a veto on the part of the examiner and the approval for road traffic was yesterday. Whether at all and with which actions in the tuning area a mutual influence can take place shows the following table.
- X = mutual influence is also possible
- - = save mutual influence is to be expected
Um to make sure, should im Apron an upcoming conversion campaign the advice of a Experts be caught up. become like this unnecessary costs and stress verhindert. And you should too not vergessenthat some action den Loss of warranty promise from vehicle manufacturers can result. Therefore, be informed advancewhether their insurance services in the area Tuning offers at all and which parts in this case automatically insured are. If that is not the case, the Comprehensive insurance to appreciation be adjusted afterwards. Furthermore, with the increase in performance higher classification in the liability class possible. More information on this in our report "Tuning may jeopardize insurance cover!"
Lowering and chassis conversions
Many tuning fans want a constant sporty driving experience in the street. The driving comfort is usually not the essential indicator for the tuning friends. At the Lowered there are sometimes special solutions to be observed; the legislature actually sets few limits here. But even professionals agree that deeper does not equal better means. The optimal tuning between dampers, suspension springs and axle geometry is the variant that the suspension quality definitely not them optics. one cheap alternative in the form of simple Lowering springs or thread springs as a Alternatives suspension conversion should always critical to be faced. The stock springs be through here shorter and harder Copies replaced that Suspension shocks but can remain the same. However, so-called "On-Block Situations". The damper at the compression until Maximum in maxed out, but the actual dampening effect is then Do NOT spread pesto on this layer! guaranteed. Criminal and of course inadmissible on the other hand, is the variant when the standard springs simply have a few turns are removedto lower the vehicle.
Potential hotspots are a much worse one steering behaviorwhen the residual travel is too small or a strong one functional impairment a travel-dependent brake force regulator. They are all related to chassis interventions. Looking for not only deeper, but also secure ride, are consistent in themselves complete packages from quality brands to recommend. You will only with test certificates commercially offered.
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Deeper - but with certainty
Vehicles with modifications to the chassis don't just come athletic therefore, they also take care of more safety in the traffic. The landing gear is on most essential for the Safety in traffic to call. If there are dangerous situations (avoidance), then the Combination from shock absorbers and Spring to be perfect. Only in this way can the vehicle itself jerky evasive maneuvers be kept on the street. This puts the chassis ahead of ESP and traction control. At sporty and deeper vehicles are the feathers harder and the dampers on it customized. At least when the chassis comes from manufacturers like KW, H&R & Co. Such cars are easier to control and the suspension tuning leaves much less swaying movements to. Not insignificant, however, is the ideal interaction between Suspension and the Vehicle. A good chassis is useless if the car doesn't fit.
Lowering springs are often the beginning of a sporty look. If the driving behavior is to be dynamic in nature, the original dampers are still required work perfectly. The vote is not allowed soft his and the spring action must be large enough at the same time stay. This is only possible with series dampers difficult to unite. Complete chassis form at this point best solution. they were specially designed for the respective vehicle. If it is a reputable manufacturer, dampers and springs are perfect on each other Voted. Such a chassis was modified in view of the ride heightwhich vehicle weight and spring travel developed. For that alone is the completion of many test kilometers required on the road.
Coilovers as the best option
The entire know-how of the manufacturers is particularly important in the production of coilovers necessary. any Lowering in the tested area are in fact absolutely during the conception by the engineers take into account. Such a suspension strut module must be complete newly constructed and Voted become. So it is understandable that a good coilover not cheap is. At this point, saving would be the wrong advice, because it puts security at risk. A write-off is discord more expensive than investing in more Safety. Together with the higher security is also the lowered vehicle optical improvement not to be ignored.
Ground clearance must be guaranteed
Attention: There aren't any ex's legal regulations about the minimal ground clearance, but one eight inches high Barrier should not be for any vehicle a problem. And an examiner needs that Part certificate for the new chassis components, this should upon delivery contain be. Lies no appraisal, so can no registration . The operating license expires. An opinion on sufficient ground clearance is with one correctly set Suspension including test report not hard to get. So when you buy it is important discord keep an eye on the quality. If the manufacturer is a specialist, he uses high-quality material and then the product is too for the desired Vehicle optimized, so the purchase will end up with more safety and also More fun rewarded in the curve.
Alloy wheels with part approvals
Light-alloy wheels can go with you without any problems Part approvals be assembled unless it exist Requirements in the test documents. Use at the wheel conversion always appropriate wheel nut and screws. original screws for the spare wheel (if available) are also highly recommended at this point.
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Sportiness and design? The quality is the most important Indicator!
If the alloy wheels are of a particularly sporty nature, the desired eye-catcher is guaranteed. cast wheels are on the rise again, but mainly the particularly high-quality ones Magnesium rims, carbon rims, forged rims or even plastic rims are becoming more and more important and play a decisive role in the individualisation of one's own vehicle. While one-piece Alloy wheels are made from a single piece of metal multipart rims off Rim star and Rim beds screwed together. The screw also allows the separate exchange of the components in the case of a damage. The paint layer on light alloy rims is usually silver or black and covered with clear varnish. But when it comes to design there is no limits, in practice have become increasingly common in recent years dark finishes used. They are often enhanced by polished front surfaces, but above all the used ones Technology and the Quality should higher quality be nature.
Tires and wheels
in case of a damage are owners multi-piece rims, as already mentioned, in Advantage. Depending on the severity of the damage, the repair can be carried out without the need for a completely new rim. inner bed, outer bed and Rim star can usually be exchanged individually. However, this is a matter for manufacturerwho for the Warranty responsible for.
Security-Relevant Information are an indicator of a quality wheel: For avoiding an expensive individual report should be a rim with a ABE be taken. The markings from the ABE are then somewhere on the front of the rim to find. The abbreviation KBA (Federal Motor Vehicle Authority) and one five digit number must be recognizable there. There is also a requirement for a expert opinion. If it is a brand with quality, it usually stands up Download offer ready on the home page. This ensures that all security requirements are met Wheel-tire combination is taken into account. Also with the rims must relevant information on back be listed. This is information about casting date and for Manufacturers (KBA number, rim size, offset)
A round thing - conversion of wheels and tires
Nicht nur die optics, but also partly that driving behavior is going through wider Tubes and larger rims improved. This should increase the effect of width but within limits hold. The driving stability can be wide tires improved become. You have a bigger one footprint, the surface pressure is therefore small. As a result, when driving in a curve higher lateral forces to be developed and the braking distances become shorter. So the result is more safety through tuning!
who looking for alternative tire dimensions is, will in the Vehicle documents find those in newer vehicles but only closer in the CoC papers are defined. But logically there are many in the tuning area Formats, the go beyond this listing. Regarding the wide formats it would be beneficial if the Rolling circumference familiar with the standard tires largely agree. Here is the rule: The more precise, the better! Otherwise, the deviations from speed needle to speedometer are too great and a complex and expensive one may be necessary Tacho adjustment .
Low-profile tires are ideal for fans of rims with large diameters. The wide tires have one lower flank height, so that guided more precisely can be. The reason is the lower ones deformations in the Side wall when turning. They are less strong than Pneus, where standard cross-sections be used.
But also on appropriate Criticism should not be waived become, so it should not go unmentioned that this risk of aquaplaning increases with wider tires. The wide rims and the modified one Offset also affect the gauge and thus have a direct effect on Driving stability, steering behavior and Straight ahead. steering forces can be higher and from steering or drive influences be affected. Some rim types increase can Rut Sensitivity and worsen at the same time the Brake cooling. And in the wheel house is less space through the larger formats. So should be enough Clearance to chassis parts (at least 5 mm) and the body (at least 10 mm) maintain .
It is not uncommon for the fenders to have to be adjusted pulled outside or the edges after Interior knocked down become the desired rim fits. These are only allowed on such rims Adhesive weights mounted for balancing. The snow chain assembly about is then mostly neither anymore actionable. Before we go to the examiner, one more piece of information: The overall width of the tire must be in the range of 30 degrees ahead and 50 degrees behind of wheel centre full covered .
Rim cleaner – a clean thing:
Rims are unfortunately also with one perpetual pollution confronted. The effects of brake wear are massive. Mainly to the front wheels are severe, especially in connection with road dirt deposits and stubborn grey-black to find pads. The brake abrasion has a direct influence on the rule lacquered or polished surface, if the pads for a long period of time not removed . fine holes arise so on the Surface and Metals get stuck. Along with the inevitable Humidity it finally comes to contact corrosion, the protection of the paint is no longer sufficient, the rims are damaged preprogrammed.
Autoshampooes or usual cleaning supplies are not suitable for removing extreme rim dirt. Rather, they are necessary high quality but acid free wheel cleaner. The cleaner is allowed no attack on any kind of rims. Only then is the cleaning of the rims on adequate way guaranteed. There is more about cleaning the rims in our special article.
Achieve a high gloss with paintwork care!
The long-term damage to the paint is caused in particular by the different weather conditions. Already the UV radiation causes the paintwork to become dull and the gloss to fade. Also dust, wind or the Cleaning in car washes contributes to matting of Surfaces at. Clearly recognizable scratches are left behind. These are high quality polishes suitable means against this gradual process. gray haze and fine scratch can be done without any trouble remove. Even the deep shine can come back this way. There is more about the topic of paint preparation in our special article.
Paintwork sealing provides all-round protection
Insects, Rain, Bird droppings: The list of possible Environmental influences for the car paint is long. It is clear that the paint must be protected from these influences. The paint bleaches through solar radiation gradually off - the optics will heavily devalued. sealing With a Wax layer is the most suitable means and the perfect protection against this type of attack. Incidentally, the need for a new protective layer depends on the beading behavior of water on the paint. If the water forms small and round beads, is the right level of protection still there. However, if the paint spreads over a large area, it must be renewed. There is more about paint sealing in our special article.
More power through engine tuning
Essentially, the performance of an engine depends on three factors away: Capacity, Combustion chamber filling and number of revolutions. Those who want to increase performance can particularly look at these three adjusting screws turn. Ideally, the measures consist of interventions on all three components. The cylinder head machining improves about the fill level or the Tax times become by means of Chiptuning changes. Lightweight pistons and connecting rods reduce the moving masses and subsequent Turbocharging or a Conversion to compressor are the ultimate highlight.
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Shouldn't go without mention cooling system, Clutch, lubrication circuit, Suspension and Brakes remain. The question of the right basis should be asked in this regard. Is the increased performance true to type? Does the car stop? The mechanical load increases of course with the increase in performance. bearing damage or smoked through Cylinder head gaskets are not uncommon in this context. That too Noise- and exhaust emissions will through that engine tuning influenced. On the Notwendigkeit modification acceptance must be pointed out, by the way. The correct papers are in an appraisal in the specialist company but usually without problems available, there is also often a guarantee, which then replaces the conventional one warranty of the manufacturer occurs.
What is chip tuning?
Engines of modern vehicles today are made by computers controlled. The Engine control unit acts as a control center, each state is controlled and monitored. Ignition timing, Fuel quantity or injection intervals can also directly from Controller be managed. Chiptuning is the optimization the one stored at the factory records in the appropriate Storage- and control block. Vote of the variables takes place again and due to the high effort in the measuring and test procedure improvements are achieved. In turbo engines, the characteristic springs for the boost pressure are digitally accessible, so it can be precisely coordinated with the Software a significant one performance increase .
20 up to 40 percent are growth no exception, occasionally the performance gain is even even bigger. A good tuner makes sure to always keep everyone in mind protective functions of Motor Control changes are made. If that worked, then they are Elasticity, can acceleration and the top speed usually improved. In doing so, he will gas mileage maybe even lowered, at least at identical driving style as before. agility, liveliness and kraft are after a chip tuning the new properties of Engine.
The look decides - rear and front spoiler
Not only optical added value there are trendy spoilers on a tuned car. When cruising through the area but also stands practical use in the foreground. air ducts have a direct impact on aerodynamic drag coefficients, especially when it comes to the drag acts. When lowering the cW value due to Front and rear spoiler but is basically for one higher fuel consumption taken care of. But so can the speed increased become. And spoilers also affect the Driving stability out of. You change the lift coefficients CV (front axle) and approx (rear axle). Attention: If there is more contact pressure at the rear, the front axle is relieved. The reverse is also true, by the way.
Right combination is crucial.
The Improved aerodynamics arrives at first higher speed really to the fore. The pace on the country road not, but rather the ride on the Autobahn or on the Racetrack. However, spoilers and hedge aprons are allowed not just like that be attached to the car. Only vehicle compliant Models may be installed and they must Regulations in the Attachment complied with become. The assembly must conscientious to be executed. And in advance should also inquiries be obtained whether and how exactly a plastic spoiler needs to be painted for it not to a wrong one surface coating comes and an material embrittlement can be prevented. air deflectors must not be at the expense of clearance in the wheel arch or to the exhaust system affect. And also the brake ventilation still has to guaranteed . towing facilities have accessible stay and the shape and design of the spoiler no risk of injury go out.
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Rear lights and headlights
Many tuning fans want more light. However, this is with a view to changes not harmless: The headlight bulbs are often used without permission colored or so-called Xenon effect caps pulled over. Such measures to reduce the light output ALWAYS to a great extent, the degradation of the signal effect is drastic. But above all is the Eligibility no longer given. Only complete replacement lights with Approvals ensure full functionality and are permitted. The offer is here, depending on the vehicle, very large and the hearts of tuning fans should beat faster. Exclusive design mixes with high-tech, for example when tail light rings in LED technology come along or the new headlights integrated daytime running lights ( PS. We have a little guide on how to retrofit daytime running lights in our article "Retrofitting daytime running lights on the car" put together for you.) own. Completely red or black taillights (including reflectors, of course) generate their luminous colors by means of interposed color filters. Also Dual Headlight Conversion Kits with xenon are popular. It comes with checked Headlights from the accessories often really too an improvement the active one Safety.
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Exhaust systems and tailpipes
Through the great Sound and the plus on Power produce Sports exhaust systems viel fascination. In fact, with good systems, the Exhaust back pressure diminished and of gas exchange im Package improved. The new adrenaline when accelerating comes more from the acoustics, less of the driving dynamics. The improvement in performance lasts without further changes pretty limited. Nevertheless, one Sports exhaust for many tuning friends an important part in the overall picture. Changes can be made improvements am silencer system or installing one entire facility be made. One chrome trim panel can already legal beginning be straight when it comes to the approval goes. Sometimes less is more, especially when parts of the exhaust system exchanged are to be, it becomes more difficult. Than are ABE, parts certificate & Co. absolutely necessary. By the way: hands off clear out from silencers or tailpipes in own energy! Note the fire safety and do not remove any heat reflectors. Be sure to follow the correct one distance zu electric braking and Fuel lines!
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Of course, that wasn't the end of it. Our tuning magazine has tens of thousands more tuning reports in stock. Do you want to see them all? Just click HERE and look around.
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