I thought I was just going across bad sections of highway but now its for sure. I've got strong vibrations coming from the drive train I think. It feels like I have a flat tire. It happens at all speeds and dies off once you stop accelerating. Could it be the drive shaft, differential or in the wheels. Tires are relatively new, differential has no leaks and drive shaft is tight when you try to shake it. I spent a lot of time pulling on tires to check for bearings out and tracing everything underneath and there are no signs of anything. Wheels are random after market but have been fine until now. Please help I am inches away from doing something drastic.
98 impreza, 2.2, awd, AT