http://www.tyres-online.co.uk/techinfo/alloy.asp
Looks jolly useful to me
![Idea :idea:](./images/smilies/icon_idea.gif)
Although it appears from Summit Racings page.....
http://www.streetandstripmotorsports.co ... pacing.htm
that 'backspacing' is measured very differently to 'offset'
![Confused :?](./images/smilies/icon_confused.gif)
Moderator: Moderators