Privacy Policy

Last updated: 23 October 2026.

1. Who we are

This policy covers tirecbm.com and its Chinese pages under /zh/. Contact details are on our Contact page.

We do not ask you to create an account, and we do not ask for your name, email address or phone number to use the tools.
The numbers you type into the calculators are processed in your browser.
The Loading Plan saves your unfinished plan in your browser's local storage so it is still there when you come back. This data stays on your device. You can delete it at any time by clearing your browser's site data for tirecbm.com.
Like any website, our hosting provider may keep standard server logs (such as IP address, browser type and the pages requested) for security and to keep the site running.

We use Google AdSense to show ads on this site.

Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website or other websites.
Google's use of advertising cookies enables it and its partners to serve ads to you based on your visits to this site and/or other sites on the Internet.
You can opt out of personalized advertising by visiting Google's Ads Settings: https://adssettings.google.com
You can also opt out of some third-party vendors' use of cookies for personalized advertising at https://www.aboutads.info/choices
To learn how Google uses information from sites that use its services, see https://policies.google.com/technologies/partner-sites

This site is a business tool and is not directed at children under 13. We do not knowingly collect personal information from children.

If we change this policy, we will update the date at the top of this page.

Questions about this policy: see our Contact page.