Privacy Policy
Effective date: June 2026
What we collect
TreadSize collects minimal data. Our tools run entirely in your browser — tire sizes you enter are never transmitted to our servers. Specifically:
- Tire size inputs: processed locally in your browser. Not sent to any server. Not logged anywhere.
- Server logs: like all web servers, our hosting infrastructure logs basic request data (IP address, URL requested, timestamp, browser type). These logs are used for security and performance monitoring only and are not tied to your tire searches.
- Analytics: we may use privacy-respecting analytics that do not use cookies or fingerprinting (e.g., aggregate page view counts). No personal identifiers are collected.
Cookies
TreadSize does not use tracking cookies. We do not use advertising pixels, third-party ad networks, or behavioral tracking.
Third parties
We do not sell, rent, or share your data with third parties. If we add affiliate links in future (disclosed when live), clicking those links takes you to a third-party site governed by their own privacy policy — we do not share any data with those sites.
Children
TreadSize is not directed at children under 13. We do not knowingly collect data from children.
Changes
We may update this policy. Changes will be posted on this page with an updated effective date.
Contact
Privacy questions: hello@treadsize.com
Sources and calculation limits
Source note updated
June 2026
Calculation scope
Nominal dimensions from the size markings supplied. Vehicle installation is not verified.
Method and inputs
- Nominal geometry calculated from tire-size markings
- Original-equipment size references supplied by users or vehicle placards
- Diameter differences and theoretical rotation ratios; no installation approval
Calculated dimensions do not verify the tire model, load or speed rating, approved rim width, wheel offset, physical clearance, or vehicle systems. Confirm those against manufacturer specifications before installation.