Offset question - upgrading wheels

danr55 · Post by **danr55** » Wed Aug 08, 2007 3:56 pm

hi guys,

im changing me 17s for 18s on 17s the offset if et53 do i assume the offset needs to be the same on 18s?

probably the stupidest question ever!

thanks
Dan

BenTaylor · Post by **BenTaylor** » Wed Aug 08, 2007 6:43 pm

It depends how wide the new wheels are, how much arch clearance you've got and what size tyres you want to fit...

danr55 · Post by **danr55** » Thu Aug 09, 2007 3:42 pm

I'm going from 225 45 17 to 235 40 18s
I understand there's plenty of room in the arches.. im ugrading the wheels to get AP's and would like to be confident they will clear the brakes !!

BenTaylor · Post by **BenTaylor** » Fri Aug 10, 2007 12:13 pm

You could go for a slightly lower offset then if you wanted, that would push the wheels further out of the arches and should give more caliper clearance (but this is usually more dependant on the spoke design).

This page is good for working out how much clearance you'll have with the new wheels:

http://marksink.com/tire_wheel_offset/offset.html

danr55 · Post by **danr55** » Sun Aug 12, 2007 11:52 am

thanks for your help