i am currently running 195 55 15s on my 01 gsr and im looking to upgrade to something bigger just wondering what anyones elses set ups are and how they are working and what will work the best for road racing purposes.

 

id stick with 15's. the same drop on 16's will give tire rub on righthand turns and the like.

 

I'm rolling on 205-50-15's. Just the right size!