Originally Posted By: Neil_A
That’s why I am a little apprehensive because these Symmetry's have the 98T service description with the 600/A/A UTQG rating. Both times I had the BFG's road balanced was with the Hunter GSP9700. Discount Tire even road forced the Michelins to make sure I had the smoothest ride using the GSP9700.
Looks like you got the "Honda" version of the Symmetry tires. They do have the vast majority of negative reviews. When DT RFB'd the tires, what were the numbers they got? Those numbers are the most important part. When the local Goodyear dealer was RFB'ing the tires on my Cadillac, he said they were all within 22 pounds, and that's the BMW spec, so it's good enough. I called horsepuckey, and asked to see the numbers. One was at 22, and the others were 3, 4, and 11 pounds. The 22 lb tire was the one causing the vibes.
GM has a TSB about replacing the lower control arms in the large cars (Buick Park Avenue, Cadillac DeVille, etc) for this very issue. Apparently a revised bushing is available, but the whole arm is replaced as a service unit. I don't know if that TSB applies to your Grand Prix also.