been trying to search for but cant find, it was a program on excel(i think) that allowed you to change the rim/tyre width and offset, it was looking down onto the tyre and had different coloured lines for new and old wheel sizes.

can anybody help please

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

The wheel and tyre bible will do more than that for you.

Bible

Guiness is on the ball today. Me i need to wake up a bit

[Edited on 9/5/10 by omega 24 v6]