Originally Posted by salrt

OK, so I got a different explanation for the shimmy issue. Don't know about all of you, but mine is primarily when I start out and then gets better/goes away after a few miles. I talked to the folks about road force balancing them and the guy told me he would do it but it likely wouldn't fix the problem. I'm running Nitto 420s 284/40/22, so they are not cheap tires. He says the issue is the nylon cap that they put over the belts to help keep the rubber from 'wondering' at higher speeds. This nylon is apparently pretty pliable. With the weight of this vehicle, the tires tend to flat-spot when it sits for a while as the nylon cools down. This causes a shimmy until heat builds-up in the tire a the nylon gets round again.

Now, I'm no tire guy, but a buddy of mine is and he agreed. With wider more performance oriented, low profile tires, it is even more evident. So...in the words of Top Gun (yea, I'm that old), "that may be bull ****....but it's really good bull ****..."

BTW - my winter Michellin's (285/50/20, more sidewall) have no shimmy what-so-ever (not performance oriented)...further evidence that this may in-fact be true...

Originally Posted by Easyryder01

I have continental cross contact tires 285 50 R20 and they seem to have a shimmy and then it goes away. But my shimmy I believe happens after they've already warmed up. I know I don't have a crummy tire and it doesn't have a small side wall either ?