10-06-2004, 09:34 AM
In the last couple of weeks I've noticed a marked increase in the amount of noise coming from my rear tires - particularly between 45 and 65mph. If I go above 65mph (usually 70-75 mph) the sound decreases dramatically.
I'm afraid that this may be a bad rear wheel bearing. Anybody else agree based on my description?
I have a 4000S (FWD) and had my front wheel bearings replaced earlier this year. Nokian NRW tires.
10-06-2004, 09:50 AM
a couple of the bearing were worn flat, replaced both sides no more noise.
10-06-2004, 10:06 AM
Wheel bearing noise *usually* changes, depending on cornering load. If a bearing is bad, usually the 'outside' wheel when cornering will make more noise. And usually more noise in a corner, than driving straight (As that's when the bearing gets loaded up).
A good wheel bearing test is to jack the wheel up, and test for play (same as checking for a bad ball joint). Maybe give the wheel a spin as the same time as it's up in the air..
On the other hand, it *could* be tire noise. I've been tricked into thinking I've got a a bad bearing, only to find it's a tire. Maybe swap tires front to back, and see if the noise changes. Especially as they are sort of snow tires..
10-06-2004, 11:21 AM
I had the tires rotated a few weeks ago. The noise didn't start immediately after the rotation - just in the past week or two.
10-07-2004, 11:19 AM
...and do some fast lane changes. Left then right. If the sound get either louder or quiter, then it's most likely bearings.
I just did the rear on mine a week ago. Took me about 30 mins. very easy.
10-10-2004, 06:09 PM
Yep, it was the inner and outer rear wheel bearings. Had it fixed by the pros. $60. Was in and out from diagnosis to being fixed in about 40 minutes. Totally quiet now.