Join Date: Sep 2010
Location: West Sussex United Kingdom
I run 36 front and 42 rear as recommended by Yamaha, for a time they recommended 39 in the front but then went back to 36 - dealer did not know why.
The cupping is caused by use of the front brake and will affect all makes. I tend only to use the front brake in emergencies relying on the rear which is connected to one piston at the front. I get very little cupping and about 9 - 10000 miles. Suprisingly the rear will generally do a couple of thousand more.
I tried the GT version and they did not last as long, so have gone back to the standard ones.
Past bikes; Honda 50 Suzuki 50 Yam XS250 Yam XJ650 Yam XJ 900 Honda CX650 Turbo Yam FJ1100 Yam FJ1200 (2) Honda ST1100 (2) Yam FJR1300 (5) 670,000 miles !
Last edited by lagain; 03-31-2017 at 03:33 PM.