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Old Jun 4, 2025 | 03:07 PM
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Default TUV - track mods

grüß Gott
I'm expecting crickets but let's see. I will be spending a lot of time in Stuttgart going forward and I want to continuing doing track days aka HPDE. Will TUV preventing me from doing basic track mods like seats, harness, two peice iron rotors, dampers, etc? If so, it seems as if one is forced to either 1) tow a trailer with a dedicated track car with all the illegal mods or purchase a GT3/4 with factory bars and harness. What does the paddock look like at a typical track day at Hockenhiem, Bilster Berg, etc? thank you
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Old Jun 5, 2025 | 07:47 PM
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Try reaching out to @rainer he might know or point you in the right direction. Tschuess

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Old Jun 6, 2025 | 02:06 AM
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Will strongly depend which license plate you‘ll have.

If the car will be registered in Germany and carry a German license plate, you‘d be required to use TUEV-complient parts (which typically will come with EU-compliance papers. some of those like coils, wheels, seats, harness etc. need to be checked by TUEV for proper installation and papers). Some OEM stuff can be installed w/o check since the OEM issues compliance papers. Brake pads, rotors - mostly unnoticed, hence no big deal.

examples: I went with larger GT3 brakes in my 996 turbo for years and nobody cared. Suspension, wheels, tyres, etc I had to get checked by TUEV including EU compliance papers per parts. Exhaust you can find some with EU compliance papers w/o need to be checked, just to carry with you in the car in case police does a routine check or for TUEV routine inspection every 2 yrs.

For non-German license plate, the rules of the respective country apply and TUEV is not responsible, police normally would not interfere (unless major technical issues and risks for 3rd parties occur, e.g. obvious defect tyres, breaks, etc).

Be aware most tracks have a noise limit. Extremely loud cars might get the black flag after one lap. Very common for GTx with modified mufflers.

Paddock depends on event and track day you‘ll do.

Last edited by rainer; Jun 6, 2025 at 02:15 AM.
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Old Jun 6, 2025 | 11:38 AM
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Originally Posted by rainer
Will strongly depend which license plate you‘ll have.

If the car will be registered in Germany and carry a German license plate, you‘d be required to use TUEV-complient parts (which typically will come with EU-compliance papers. some of those like coils, wheels, seats, harness etc. need to be checked by TUEV for proper installation and papers). Some OEM stuff can be installed w/o check since the OEM issues compliance papers. Brake pads, rotors - mostly unnoticed, hence no big deal.

examples: I went with larger GT3 brakes in my 996 turbo for years and nobody cared. Suspension, wheels, tyres, etc I had to get checked by TUEV including EU compliance papers per parts. Exhaust you can find some with EU compliance papers w/o need to be checked, just to carry with you in the car in case police does a routine check or for TUEV routine inspection every 2 yrs.

For non-German license plate, the rules of the respective country apply and TUEV is not responsible, police normally would not interfere (unless major technical issues and risks for 3rd parties occur, e.g. obvious defect tyres, breaks, etc).

Be aware most tracks have a noise limit. Extremely loud cars might get the black flag after one lap. Very common for GTx with modified mufflers.

Paddock depends on event and track day you‘ll do.

Thank you Here in the US, we see people avoiding personal property taxes (fur teuer autos) and annual emmissions inspections by registering their cars in more "friendly" states (eg Montana). This begs the question: Is it possible (and practical) to reside in Germany but register a car in another country in order to avoid TUV inspections? Would this alone cause the police to target me? I'm looking to add wild aero or have straight pipes spitting flames.
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Old Jun 6, 2025 | 11:48 AM
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From what I remember of my 18 years in Switzerland, IM inspections are royal pains in the a** and are pretty standard throughout Europe. I used to have a 2.2L 911 Targa and a VW camper. When we went camping I would swap out the weak 1600cc VDub engine for the 2.2L (brakes etc. had been upgraded) but had to make sure my "visite" to the "Service de l'Automobile" wasn't near the same time. Oh yes and disconnect "illegal" rear fog lights, front ... list too long. Luckily I worked at CERN and we had a car club with a lift etc.

Love the food not the rules

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Old Jun 6, 2025 | 11:50 AM
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There is a time limit you can keep and use a car in a country with a foreign license plate, else you‘ll be a target for tax fraud investigations by police or IRS. Plus you would need a permanent residency in the country you register your car. I would strictly advise against it. Not sure, but I assume the time limit is somewhere around 6 months max.

Also, countries around ramp up their TUEV procedures. E.g. Switzerland is by far worse than Germany. Possibly Italy is more lush, looking at the fact that they can build a stock Lamborghini which can wake up an entire town and sell it street-legal EU-wide …LoL.. also some eastern European countries should be rather easy about it.

You might want to check with some of the independent Porsche shops once here how far you might take it, there are plenty around Stuttgart.

Last edited by rainer; Jun 6, 2025 at 11:53 AM.
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Old Jun 6, 2025 | 11:55 AM
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Yep, the Swiss are totally **** and both my car and I used to dread a visit to the Service des Autos every couple of years. I believe 6 months is the limit on temporary or out of state/country plates

siberian
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Old Oct 5, 2025 | 12:43 AM
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Originally Posted by Torque Buffet
Thank you Here in the US, we see people avoiding personal property taxes (fur teuer autos) and annual emmissions inspections by registering their cars in more "friendly" states (eg Montana). This begs the question: Is it possible (and practical) to reside in Germany but register a car in another country in order to avoid TUV inspections? Would this alone cause the police to target me? I'm looking to add wild aero or have straight pipes spitting flames.
In addition to Rainers comment, registration in a different EU country requires you to legally reside there in order to register, they all have a compliance law similar to TÜV.
Could you register in the US and drive in Germany: yes, for 6months, but that car won't be eligible to be registered in Germany.
AND: if it is to loud or looks beyond legal, the German police will have no problem pulling you out.
Thus, forget your idea and buy a pure track car

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Old Oct 5, 2025 | 11:42 AM
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Originally Posted by Jafetica888
In addition to Rainers comment, registration in a different EU country requires you to legally reside there in order to register, they all have a compliance law similar to TÜV.
Could you register in the US and drive in Germany: yes, for 6months, but that car won't be eligible to be registered in Germany.
AND: if it is to loud or looks beyond legal, the German police will have no problem pulling you out.
Thus, forget your idea and buy a pure track car
Oddly, your allowed to install a full FIA cage and still be street legal in Germany. This I learned while inquiring about replacing OEM seats (integrated airbag) with aftermarket fixed back seats. I'm in the process of building a dual purpose car and I'm thinking that a pure track car is the way to go but trailering requires special driver's license and equipment. Also, tire options a limited in Germany. The US is blessed with all the go fast goodies.
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Old Oct 5, 2025 | 11:59 AM
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Originally Posted by Torque Buffet
Oddly, your allowed to install a full FIA cage and still be street legal in Germany. This I learned while inquiring about replacing OEM seats (integrated airbag) with aftermarket fixed back seats. I'm in the process of building a dual purpose car and I'm thinking that a pure track car is the way to go but trailering requires special driver's license and equipment. Also, tire options a limited in Germany. The US is blessed with all the go fast goodies.
The US is blessed with a lot of things including gorgeous nature, but unfortunately also a lot of very undesirable people and ideas and I am glad that Europe has a lot more common sense (such as not allowing fire speeding exhausts and requiring special drivers licenses to name just two examples from your list)
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Old Oct 5, 2025 | 04:32 PM
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Originally Posted by Jafetica888
The US is blessed with a lot of things including gorgeous nature, but unfortunately also a lot of very undesirable people and ideas and I am glad that Europe has a lot more common sense (such as not allowing fire speeding exhausts and requiring special drivers licenses to name just two examples from your list)
Bad people are a universal human condition, not unique to the USA. We can save this for another another thread and agree that fire shooting cars and diesel coal rollers are also bad. I just wish it wasn't so hard to get a simple Girodisc rotor accepted by TUV.
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Old Nov 10, 2025 | 04:46 AM
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Can anyone recommend an exhaust shop in Stuttgart? Thank you
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