With metzler rr on back go 16 on front and see how the 39 feels. If 39 feels off then go one higher Vortex on back and test. I think oem one higher would work but haven't tested that yet. Front go bridgestone rs10 G. It V's way slow for me. If you don't use met rr rear then just go up on the rear sprocket until you find what you like.