Ivylog wrote:
I had much the same problem with new tires. Told the truck tire place I wanted 90 psi in all six tires based on the weight carried. A coach that handled well went to one with the back end all over the place. Checked the pressures and they were all 120... decreased to 90 and problem solved.
OP, what were your pressures before putting new tires on? Your problem is not too little air pressure, it's too much... especially with new tires.
I find this most interesting, but they put them all to 100 PSI just as I had been using before. (I checked the pressures before going back to the tire dealer.) I've been looking at the Michelin specs of the OEM tires and comparing them to the Toyo tires I got and they are really close. The only difference I see from the manufacturer's specs, is they recommend the 100 PSI in the front and 90 in the rear. This is irrespective of the actual weight, which I'm still trying to obtain. Also there was only one of the tires that was the originl Michelin -- the others had been replaced before I got the rig with other odd makes.
When I get the weights, I'll check back here.
Thanks,
GS