Wheel and Tyre Bible

[PJ57]

Hey all, hope this is of some use when calculating wheel offsets and tyre sizes etc.
I've found this very useful in the past, and makes tyre selection much simpler (even has a nice pic to aid tyre diameter selection, including speedo calibration).
After losing the link, I've just found it again, and hope it helps.

Everything you need to know about wheels and tyres etc.......well, hopefully

http://www.carbibles.com/tyre_bible_pg4.html