Join Date: Nov 2009
Location: Lander, Wyoming
I will suggest that we Always run +2 PSI in the front tire as compared to the rear, at least up to the Max. Pressure. Why?
The front tire is skinnier. It is always DRIVEN! Not Driving/Driven as the rear tire, on and off the gas.
I believe you will find even Less cupping of the front tires, if you follow this advice.
When one is heavy on the front brake, as one should Be, 70-95 % of the weight of bike and rider is Transferred to the front tire. Under-inflated, it will cup even More. WHY?
When the load pushes on the Center Knobs or Tread, the other knobs or tread blocks 'Flex' Towards the point of contact. Prove it to yourself, with a Dis-mounted tire. Knobbier the better.
Modify at "YOUR OWN RISK"!
Still riding my 1987 KL650-A1. 85,000+ miles & counting