About CheckFitment

CheckFitment answers one question — will this wheel and tire fit your vehicle — and tells you where every number came from. It is free, shows Google ads to cover running costs (ads never influence the numbers), needs no sign-up, and it sells nothing. It contains disclosed affiliate links (WheelXL via Awin) in the wheel-shop box of the wheel fit calculator.

Who runs it

CheckFitment is an independent project run by one person, Rainer Lang. There is no company behind it and no manufacturer, retailer or wheel brand pays for placement on it. If a specification here is wrong, it is my mistake, and I would like to hear about it.

The site is written for the US market and I am based in Germany. That is worth saying plainly rather than hiding behind a generic contact form: US customary units come first here because that is what the audience and the OEM documents use, and the research is done against manufacturer publications rather than local trade practice.

Contact

Email: info@checkfitment.com
Corrections, source tips and press enquiries all welcome at that address. If you are reporting a wrong specification, please include the vehicle, the year, and the document you are reading it from — that is what lets me fix it properly rather than swap one unsourced number for another.

Rainer Lang
Dalkinger Straße 27
73479 Ellwangen
Germany

Where the numbers come from

Every vehicle specification on this site is researched against primary manufacturer documents: owner's manuals, factory body-builder and spec sheets, press kits, and OEM parts catalogs. Forums, retailer product pages and other fitment databases are used as leads to chase, never as sources.

The dataset today holds 62 vehicles across 182 generations, with 644 source citations behind them. 34 of 182 generations currently meet the bar to be marked verified.

That last number is deliberately on display. Most fitment sites publish a single figure with no provenance and no indication of confidence. This one shows its work, including where the work is incomplete — an unverified row is labeled as a candidate, not dressed up as fact. How verification works →

Why this exists

Wheel fitment is full of numbers that are repeated everywhere and sourced nowhere. Some of them are wrong in ways that matter: a lug torque figure that belongs to a different wheel material, a bolt pattern carried over from a generation that changed mid-run, a center bore nobody can actually point to a document for. A wheel that comes off a moving vehicle is not a rounding error.

So the rule here is narrow and boring: state the number, state the document, and when there is no document, say so. What that research turned up →

Elsewhere

CheckFitment on LinkedIn and YouTube. If you find this site listed anywhere with a different name, description or contact address than the ones on this page, it is not something I put there.

Corrections

If you can point to a manufacturer document that contradicts something here, that correction gets made and the source gets cited. If you think a number is wrong but cannot source it either, tell me anyway — an unsourced disagreement is still a useful signal about which rows to re-check first.

Specifications on this site are provided for reference. Always confirm against your own vehicle's documentation and door-jamb placard before buying or fitting wheels, and torque to your manufacturer's figure for the wheels actually on the vehicle.