Can't speak for the OP but mine have been a steady 30 and 40 psi.

 

I saw those from another thread yesterday. I think I'm going to try them.

 

The tire inflation pressures of 30 PSI front and 40 PSI rear are cold inflation. That means in the morning after sitting overnight and before the sun has hit them.

Setting them to these pressures once they're warmer results in a low pressure condition.

That said, skinny front tires on heavy bikes normally wear like that because the lower pressure is necessary to obtain proper traction with such a narrow contact patch.

 

On the advice of a fellow rider, I pumped the front tire to the max 42 psi this morning. The best ride I've had on it since it was new. I'll then keep the pressure there and say,...for now..., that I was under-inflated.

 

The correct front tire pressure for my Bridgestone's is 42; run it much less than that and it'll cup and start to vibrate in no time...one buddy's Honda ST1100 will do the same to his front tire; heavy bikes with relativly skinny front tires.....not a great combo

 

My factorys did also but it could be balance issue

 

42 is definitely too high and ups the risk of blowout.

If there was vibration, then you had something else wrong and it's being masked by the overly high pressure.

Mine cups exactly as described and never had any issues with steering, vibration, traction, etc. and has lasted 11,000 miles so far.