Mikegpr03

Guys I might be getting some 20' wheels 20X8.5 front and 20X9.5 ( or 10 ) for the rears. What offset should the 20' wheels be ordered with? Also can you wheel guys suggest the proper ET for a set of 19's?

Wheels in question are
19' BBS CH-R's ( silver or titanium )
20' TSW NURBURGRING's ( Black )
Thanks
Mike

Mikegpr03

Wheel guys need some help please

amdeutsch

Sites,
Tirerack for BBS
TSW for NURBURGRING

Don't be lazy.

hyperion667

yeah, don't be lazy, just curt and rude

Mikegpr03

Guys don't understand my question. I need the proper offset to run on the C63. I already did go to both websites. A 20' wheel needs a certain offset and tsw doesn't have a recommended 20inch ET for out cars, just for 19's.

Please do be so quick to judge

hyperion667

wasn't judging you know?
no disrespect!

gthal

Diameter of the wheel is irrelevant. Offsets are the same subject to wheel width. A 20" wheel has a lower profile tire so overall diameter is the same, therefore offsets aren't impacted. If you change the width of the wheel, this may impact offset. That is, a wider wheel may often require a higher offset to maintain the same fender room. Many go with a 10" wide wheel and a 50 or 55 offset which results in a slightly more aggressive fitment than stock (which is 9" and 54 offset in the rear).

So... 20" size doesn't impact offset choice and if they don't have the right offset for the 20" size then you may be out of luck. Also, as mentioned, the width of the wheel and the tire choice will impact the offset. The combinations are many.

Mikegpr03

Thank you I was really looking high and low for this. Tsw has a 9.5 and a 10 inch wide wheel. I'd love to be as flush as possible. The rear wheels come in a ET 40 and ET 54

gthal

You will rub with a 40 rear offset. I would go with ET54.

E55 Bulldog

Hey, did you ever try to fit 20's on your car.
I was thinking about 20's but don't want to change out my suspension.

bhamg

Read through the aftermarket wheel thread at the top...my guess is there is a ton of useful info re. ET's as well as lots of photos so you can fine tune the ET visually. Not a lot of us have gone to 20's so understandably don't want to make recommendations shooting from the hip.

E55 Bulldog

I just want to try to fill the wheel wells without changing my suspension.

noodleman

gthal already answered your question in terms of offset, but what you also need to make sure is that the pad clearance on the wheel will clear our gigantic rear brakes.