I am running Michelin LTX M/S LT 235R16 Load Range E tires. My truck is a 4 X 4.

I have a growling noise that really sounds like a bearing. The left front hub and bearing assy was replaced to eliminate the noise. Bearing was bad. Noise is still present. I had the front diff checked and a lot of metal was accumulated on the mag plug and since I drive a lot under load I decided to replace the diff with a Jasper remanufacutured diff at a non dealer shop.

Noise is still present. So I swapped front tires side to side. Growling noise has not changed. It really sounds like it is in the left front but could be coming from elsewhere and there are times when it seems to change a little with different road surfaces.

The dealer tells me the rear diff has got problems because it whines. They all whine with over 100,000 miles on them, especially heavy duty trucks. They always have. I decided to leave it alone until I am convinced it is bad.

Back to the growling. I had one of the tires get cupped a while back and the growling sounds a lot like that noise did. I have checked all the tires for cupping but cannot see or feel any. I am suspicious that this whole growling issue is the tires, especially since there are 6 tires to make noise.

Do any of you have tire noise from the Michelin tires??

I thought they were suppose to be quiet. I am getting good wear from them. They have over 50,000 miles and will get a lot more. One of the tires however is wearing faster than the others and I have no idea why it would.

Tom Cobb

The rear axle on mine does not whine. 158,000 miles - or maybe it does but I have not noticed... ):h them back tires are not quiet:eek:

TC,

Does the howling noise change when banking left or right at 25 MPH? This may indicate a bearing if it does.

If you think it may be the tires, try rotating both front tires with 2 good ones from the rear. Your Michelins are not known to be noisy at all, however any tire that is cupped will make noise. After rotating see if the noise goes away or follows the tires to the rear.

Hope this helps.

TC which tire is wearing faster? Front, rear outside or rear inside? Have you rotated them? Checked the air pressure? How's the camber? I can hear lots of tire road noise from my truck. It's done it from day 1. I just figured it was the tires (General).

Tires have been rotated from side to side on the front to see if it changed sides.

The noise does not change with banking / turning.

The tire that is worn more than the others may be one that I installed before I changed the whole set but I have not verified that yet. I believe it was on the left side and now on the outside right.

I have had 4 wheel alignment done and all tires balanced and inspected for cupping. I am baffled at this point.

It sounds like you may have 2 issues working.

The "older" tire may have had a balance or cord seperation problem since it seams that the cup problem has not reappeared in the original tire location. If the new tire started to cup in the same location, I'd say it could be shock related.

As for the noise issue not changing location, maybe you lost some firewall insulation or something along those lines. Like I said before, my tires make a lot more noise than any previous truck I've owned. My noise is coming from the rear.

What tire pressures are you running? I'm running from 55 to 60 psi on all tires.

Roadrunner

I am suspicious that the culprit is the rear tires but it is hard to pin point the actual location / direction. It could be all of the tires. I run 80 psi in the rear and 70 in the front. I run at 25,400 lbs with a 38 ft trailer and need to keep max air press in the tires.

What kind of tires are you running on your truck?

I'm running General Ameritrac LT215/85/R16 all the way around. It's the stock tire from the factory. I'll run them until I need to make a change. Like I said, I run 55 to 60 PSI dead load. I'll bump it up when I hook the 37' 5er which is only 14K. When I pull my 21' bass boat, I don't make any pressure changes because the weight on the rear is not bad.

When you said 25.4K are you talking trailer weight or total rig weight? Also, is the tire noise different loaded versus unloaded?

I'm running the exact same tires you are and I have no noise. Best tire yet.

I am at 25,400 truck and trailer when trailer is fully loaded. It is a 38 ft gooseneck flatbed. The noise seems to change with road surfaces more than load but when I unhooked from the trailer seems to be the worst. Most of the time I still have 80 psi in the rear tires unless I know I will be unhooked for several days.

I am really thinking about going to Yokohama tires next time around. I have been talking to the big truck folks and they are getting phoemenal service out of them.

Tom,

Just for fun, back the PSI down to 60 and see if that changes things. It's got to give you a better ride if anything. But, it may alter the sound. When I drive to DFW airport nearly every week, I'm on many different road surfaces all the way. My tire sound always changes. Try that and let's see if there is a change and let us know the results. I'm headed to NY on Monday but I'm always on the DP when on the road.

One other thing. When I bought my truck it had 45 PSI in the tires. When I added 15 PSI, the sound changed. Just a thought.

I will have to do it next time I am not loaded, which ain't often. I need the tire press when I am loaded. I will get back to you on this.