I followed a prius at 75 mph and noticed he was not weaving as I was. I run 50/48 psi and tires(oem) are in good cond.There was no side wind and we were in the same lane.Front end aliaghnment was done by reputabl dealer. Could rear be out of line ? no unusual weart on tires. Help
Those pressures exceed the maximum safe pressure (44 PSI) given on the sidewall of the OEM tires. You may have found one reason why. Reduce them to no more than 44/42 front/rear and see what happens.
Did that work for you? I have the same problem. I was blaming it on previous damage. I have a bent strut and have had the entire rear axle replaced. My tire presure is up high also.