I have a set of Cooper 35x12.5r18 on my 2500 RAM are the Best tires I’ve ever had.

When I first got them they had a lot of roll from side to side when I moved the wheel quickly from left to right on the highway.

Tire guys filled them to 70psi all around.

The sidewall roll was scary at first.

I read up on some forums, and it’s something about that new style of tire.

It said that the sidewalls would stiffen up after heating a few times, and they did.

I run mine at 55-60 psi in the rear and 65-70 PSI in the front.

The tread wear is perfect at that psi.

The lower PSI in the rear prevents balding in the center of the tires.

When I pull my car hauler, I air up to 70 in the rear.

I put the tires on at 37,000 miles and now have 108,000 miles.

That’s 71,000 miles on a set of Cooper ST Maxx tires, but they are bald now.

Most call me a liar when I tell them I need a new set.

Sorry for the rambling.

I just meant to comment on the side swaying of the tires.


Sent from my iPhone using Tapatalk