Steering wheel shake

Originally Posted by Sams

The shake is always clearly noticeable when I reach 75+ mph no matter how long I've been driving, switched the tires a while ago but it made no difference.

Hi Sams, are all of the tires the same brand/type?

[AtlantaBoxster]

I had the same problem starting at 81 mph. I went to Butler Tire in Atlanta and they did a high speed alignment. Paid $130 and the problem is gone. I was told by less experienced shops that it is feathering of the tires (they must have seen a lot of the 350Zs).

You should look into getting an alignment done by a professional shop, not your run of the mill Firestone or local garage.

My 0.02.

Good luck on getting it resolved.

[jiggysubman]

there was a thread started by myself titled "steering wheel shimmy" with the same exact problem. I tried various things, and eventually just took it the the local porsche dealer to have the tires balanced. Now they're perfect. The dealer claimed that most tire shops don't have the high speed super-duper balance machine that they have. They did my balance for free, but others have reported around $100 for it. That price is worth it, and once you get it done, they will do it as much as needed for the life of the tire.