ifilrx

I'm curious if the bigger wheels will make the brakes less effective...would I need to up it as well?

BLK13X

I never had a problem but it would be on my list of priorities along with better suspension to handle the extra weight.

ACleanSC4

iTrader: (7)

with bigger wheels, you might as well get a bbk, LS400 or SupraTT to be the cheapest out of the bunch to fill up the space behind the wheel.

it would look pretty funny with tiny rotors/calipers behind your nice wheels...

JZZ30TT

To answer your question: NO.

rominl

iTrader: (4)

tons of people have bigger wheels (even 20s) with stock brakes. you are fine, just that brake fading might be a problem more easily

Kaban

I had gone from stock 16 to 18" on my GS and had no problems. I noticed it takes a little bit more effort to stop but that's the price for going with bigger wheels, I think most people would not notice it. One thing I did notice is it will take a bit more rpms to accelerate from a stop.