Changed By: Laz Change Date: November 03, 2011 09:16AM If the steering wheel wobbles, that could narrow it down to front tire balance, one or both.
If the vibration is more "seat of the pants," it could more likely be one or both rear tires. These cars have sensitive steering and taut suspensions, so even the slightest imbalance can be transmitted to the driver/passenger. Keep in mind there could be balance issues both front and rear. Tire roundness ought to be checked and the Hunter Road Force machine is the way to go for that.
By my recollection in consideration of the gearing, 72+ mph in 5th gear seems a little high for the vibration to be coming from the often discussed 3k rpm engine vibration. Two things in that regard, however: front motor mount and/or the need for a throttle body cleaning.
Original Message
Author: Laz Date: November 03, 2011 09:15AM If the steering wheel wobbles, that could narrow it down to front tire balance, one or both.
If the vibration is more "seat of the pants," it could more likely be one or both rear tires. These cars have sensitive steering and taut suspensions, so even the slightest imbalance can be transmitted to the driver/passenger. Keep in mind there could be balance issues both front and rear.
By my recollection in consideration of the gearing, 72+ mph in 5th gear seems a little high for the vibration to be coming from the often discussed 3k rpm engine vibration. Two things in that regard, however: front motor mount and/or the need for a throttle body cleaning.