OK, I'm at my wits end here.
The car - '05 Maxima
The Wheels - 18" ADR's wrapped with 245/50's "Performance Style tire" (stock rim/tire size)
1st problem...The steering wheel shakes at speeds of 60-70mph but at anything above or below is smooth. The car itself never shakes and is always silky smooth. Some times the shake @ 60-70mph is sporadic and some times will go away if you accelerate or decelerate.
2nd problem...the car wanders the road if it's un-even, transitions to bridges or any kind of groove in the road it tries to pull either way.
There is no play in the steering and nothing feels loose.
It has been aligned front and back by Nissan, tires balanced/rotated on a top of line roadforce machine. They claim the car is with-in spec, including the tires/rims.
Nissan plays the "it's your aftermarket tires and rims" card.
Ideas? Can you recommend a good shop to take a look at it? I'm sick of paying an arm and leg @ Nissan, just to get no where!