Larger tires on a car – who doesn’t want that? A sportier look, more grip, maybe even an improved driving feel. But what if the desired tires are larger than specified in the vehicle registration? This article clarifies all important questions about using tires larger than listed in your vehicle registration.
Approval process for fitting larger tires than listed in vehicle registration
Most car owners know that the tire sizes listed in the vehicle registration document (Zulassungsbescheinigung Teil I) cannot be changed without proper procedure. But why is that? It’s about safety. Incorrect tire sizes can negatively affect handling, lead to issues with ABS or ESP, and even falsify the speedometer reading. In the worst case, you risk losing insurance coverage. But don’t worry, larger tires are not strictly forbidden!
Permitted Tire Sizes: What Does Your Vehicle Registration Say?
The vehicle registration specifies the permitted tire sizes for your vehicle. These specifications include tire size, load index, and speed rating. Deviations are only allowed within certain tolerances and after a corresponding entry by a technical expert, e.g., from TÜV. But how do you find out which tire sizes are actually permitted?
What Are the Alternatives?
There are various ways to fit larger tires without violating legal regulations. One possibility is using so-called “equivalent tires.” These are tires with different dimensions but the same rolling circumference as the tires listed in the vehicle registration. “The principle of equivalence is essential for driving safety,” emphasizes Dr. Klaus Müller, a tire expert from Munich, in his book “The Physics of the Tire.” However, searching for equivalent tires can be complex. Here it is advisable to consult a specialist. Another option is larger diameter rims in combination with lower profile tires. Here too, the rolling circumference must remain as close as possible.
Technical Inspection (TÜV) Approval: The Path to Legality
If you wish to fit larger tires that are not considered equivalent, you will need a TÜV approval. TÜV inspects whether the new tires meet the technical requirements and do not pose a risk to road safety. After successful inspection, the modification will be entered in the vehicle documents. The costs for such an approval vary depending on the effort involved.
Risks and Consequences of Non-Compliance
Anyone driving with tires that do not comply with the specifications in the vehicle registration risks a fine and points on their driving record. In the event of an accident, insurance coverage may be jeopardized. “Do not ignore the regulations; it can be expensive,” warns engineer Hans Schmidt, a specialist in vehicle technology.
Risks and penalties for using non-compliant tire sizes
Larger Tires Than Vehicle Registration: FAQs
- Can I simply fit larger tires without informing TÜV? No, that is not allowed. Deviations from the tire sizes listed in the vehicle registration must be approved and entered by TÜV.
- Where can I find information on equivalent tires? Talk to a tire dealer or workshop. Online tire calculators can also help you.
Related Topics:
- Changing Rim Size
- Registering Tires in Vehicle Registration
- Tire Change
Conclusion
Larger tires can positively influence your car’s appearance and driving behavior. However, be sure to observe the legal requirements and preferably have modifications carried out by a specialist. This way, you avoid unnecessary risks and costs. Feel free to contact us via our website if you have further questions or need assistance. Our vehicle technology experts are available 24/7 to assist you.
