Rear Noise - ZR-1 Net Registry Forums

vettn71 · 11-22-2009

When I took my 90 out this morning I noticed that at 50 mph or higher there seems to be a slight vibration and a low "rumble" type sound. Nothing very clear, more like an under tone to the tire noise. It doesn't change when the clutch is pushed in, and under 50 it doesn't seem to be evident. I checked the bearings by jacking the car up and moving the tire with my hands at 3 & 9 and then at 6 & 12, but didn't feel any movement. Tried moving the half shafts and driveshaft, but didn't feel any play there, either. Tires are almost new and haven't had any issues with them. Any ideas?

Jim

11-22-2009	#1
vettn71 Join Date: Oct 2008 Location: Colleyville, TX Posts: 272	Rear Noise When I took my 90 out this morning I noticed that at 50 mph or higher there seems to be a slight vibration and a low "rumble" type sound. Nothing very clear, more like an under tone to the tire noise. It doesn't change when the clutch is pushed in, and under 50 it doesn't seem to be evident. I checked the bearings by jacking the car up and moving the tire with my hands at 3 & 9 and then at 6 & 12, but didn't feel any movement. Tried moving the half shafts and driveshaft, but didn't feel any play there, either. Tires are almost new and haven't had any issues with them. Any ideas? Jim