My gen 1 FJR front tire is cupping on the sides. I run 36 psi. Any ideas why?
14k on a front tire?!?!? With tread left?!?!?!? What are you riding this bike on, clouds?Another vote for 39-42psi, plus I’ll add that if you have loose head bearings that allow a mild wobble in the front that will contribute. My 14 has a Michelin PR4 on the front that the dealership installed as a cure for the wobble on my bike (tapered head bearings was the fix) and that PR4 now has around 14k on it with a fair amount of tread left on it, probably 1-2k of safe tread left on it.
If you run your hand over the tread you can feel some minor cupping but not really visible, I do believe that some minor cupping is inherent to motorcycling. Add some pressure and you’ll also get better, more neutral handling.
A wise man here told me when I first got my 14 and had complained about the piggish handling that if you have to wrestle it to get it to turn ( standing up) add a little psi until it is just neutral and if it wants to fall into a turn reduce the pressure a little. A little at a time ! Like I said my14 with the Michelin pr4 likes between 39 & 42psi to be neutral.