Reading Monaco92 thread about tyre grip, I looked at the side shoulder block of my new 255s GY F1 GSD3s (only done 50 miles) & wander is the recommended 40 psi as with 245s too high? Seems like the curved or the 90 degrees of tread & sidewall mean theres less contact patch? I know I have to wait until the they worn down as Paul said, maybe 500 miles or more with TSC left on (no burning rubber!). Those with 02+ 255s states it should be 40 psi for oems BS or Dunlops, but when I had tyre put on, the garage states the overall recommended is only 33, which is far too under inflated!? What a pain tyres are with OEMs are no longer available!