Free embeddable javascript car tyre size and alloy wheel offset calculator

Welcome to the tyre size and wheel offset calculator, this tool enables you to see how a different tyre size will effect the rolling diameter and therefore your speedo.

Do you wish to include one or both of these on your own website or car forum ? Allow your users to do tyre and wheel calculations directly from your website. Simply copy the HTML code below and paste into the body of your page, please do not edit the code in any way.
You may style the elements if you wish as long as the link to will-it-rub.co.uk remains intact and visible.

Code for wheel offset calculator (click on it to copy)

Code for wheel offset calculator (click on it to copy)

Please note that your forum host needs to allow your own custom javascript for this to work.

Updates to this site are infrequent, I am busy building my Seiko watch date decoder and a database of serial numbers for collectibles site.