I have a question, my friend has an 02 A6 2.7, he has 35mm offset wheels but his hp2 calipers don't clear the rim, I believe he needs a minimum of 42mm offset to clear the hp2s... what type of wheel spacer should he use? What mm size spacer?thanks...

 

What do you mean @hp2s don't clear the rim@?
What's rims width?