Contact us

We welcome messages about support, bug reports, questions on tire calculation accuracy, feature requests, and partnerships. If something looks off compared to your measured tires, include both sizes and what you expected—we treat accuracy seriously for this wheel size comparison tool.

Support guidelines

Include tire sizes as width / aspect / rim (for example, 235/45R18).
For UI bugs, describe your browser and device; screenshots are appreciated.
We cannot certify legality, warranty impact, or on-car clearance—see our terms.

Typical response time: a few business days. Peak periods may run longer.

Common questions

Quick answers about our automotive tire calculator support process.

How quickly do you respond?

We aim to reply within a few business days. Detailed fitment or speedometer calibration topics may take longer while we review your message.

Can you verify fitment for my vehicle?

We provide educational estimates only. Always confirm clearance, load index, speed rating, and OEM guidance with a qualified tire professional or manufacturer.

What should I send if a result looks wrong?

Send both tire sizes, the numbers you see in the tool, what you expected, and your vehicle year/make/model if relevant. Screenshots help us reproduce UI issues.

Important: Tire comparison results are estimates for planning only. This site does not provide mechanical certification, OEM approval, or on-vehicle clearance guarantees. Confirm final tire fitment, load/speed ratings, and speedometer calibration with a qualified tire professional or your vehicle and tire manufacturer before driving.