Tire math reference
How we make money
Right now: we don't
TreadSize is currently in its early stage. The tools are free, the guides are free, and there are no active affiliate links or advertising on the site.
Planned: disclosed affiliate links
We plan to add affiliate links to tire retailers (such as Tire Rack and similar). Here is how that will work:
- Links will be clearly marked as affiliate links with a disclosure notice at the point of use.
- We earn a commission only if you click and make a purchase — at no extra cost to you.
- The commercial relationship never influences what the calculator shows. The formulas are deterministic math — there is nothing to bias.
- We will only link to retailers with good reputations and return policies.
No ads, no data selling
We do not run display advertising. We do not sell your data — there is nothing to sell, because we do not collect the tire sizes you enter.
Questions
If you have questions about our editorial independence or commercial relationships: hello@treadsize.com
Sources, review and limits
Last verified
June 2026
Author and reviewer
Written by TreadSize editorial desk; reviewed by Automotive fitment review.
Primary data sources
- Tire size math from ISO-style tire notation formulas
- Original-equipment size references supplied by users or vehicle placards
- Fitment-risk thresholds documented in the calculator
Tire fitment output is a planning estimate. Wheel width, offset, suspension, load rating and local rules matter. Confirm OE specs and safe fitment with a tire professional before driving.