I put a set of Mastercraft Courser LT235/80R17 tires on the rear of my drw 4x4 at the suggestion of my tire store (Strouhal) they thought I might get better tread life under the heavy loads. My problem is the rear of the truck feels mushy ( side to side like sidewall flex ) not a good feeling. I was wondering if anyone else had this problem.

 

What load range are the tires? what is the weight rating on them? What pressure did they inflate them to?

 

Used to happen to me when i'd get new tires.. "tread squirm" is what we'd call it in the hi-po car world..

It should get better as the mold release scrubs off and the tires heat cycle a few times..

How long have you had 'em?

 

I just bought a set of Cooper ATR, 235 85 16 Load range E tires, and run 75 psi in them. Cooper being the parent company of Mastercraft. I had the exact...exact same thing you are speaking of. I asked my father-in-law (Cooper Regional Master Distributor) and he said, the same as above. With a few heat cycles, and scrub time, you wont notice it.

I no longer notice it in mine.

 

You guys are right as usual. After several trips the tires are much better, not as wormy as when new. Thanks for the help.

 

I had the same problem with a set of BFG T/As installed on my old pickup. Almost lost control of the truck pulling out of the tire dealer! Went down the street to a industrial area to heat cycled and scrub the tires.

MikeyB