Long story short..... I have 2 new 37's in rear and 2 ,85% tread in the front. I just had them balanced and rotated. When I drive my jeep kinda sways back and forth while driving at highway speeds (60+mph). What would cause this? Is it just my tire rotation and will end over time....or do I need an alignment? What should I do?

 

swaying as in left to right? and, is it more of a shimming back and forth or, more like being in a small boat on rough seas?

 

Tire's have to break in, give them a few thousand miles and see if that makes a difference. My 35's did the same thing.

 

It's not a shimmy, it's very slow. It will wonder left then wonder right. More gentle but I can notice it right away

 

Don't drink and drive.

 

Hahahahahahaha oh yea that's the problem :beer

 

what PSI? if your pressures are too high, your tires are going to crown and sway a bit

 

Um good point:-/ I had my tires at 35 psi and figured that was kinda low(but ran great) . The tire recommends 50psi and that's what I aired them to. I guess that's my problem?

 

whaa?? I run my 37s at 26-27psi ...

 

Whoa.....no wonder it rides bad. Let some of that air out before they pop like a balloon! The 50psi rating is the MAX that it can safely hold. Put them back down to where you had them. I run between 30-35 for highway driving.