Check this...I had some Yokohama es100s put on...tire place had'em at 37 psi...rear end was always coming around from my ausie bar. Talked to Terry Haines, who suggested the pressures I mentioned before...now the rear stays where it needs to! I think you'll be happy.
Also..use a good tire inflation gauge...the ones attached the hoses are dropped and abused...left out in the elements...usually a couple of pounds off.
