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Old 10-13-2017, 05:26 PM   #1
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Tow Car Unusual Tire Wear

We have a 2015 Cadillac SRX with 25,000 miles. The front tires have "Flaking" (for lack of a better word) on the outside treads. See Photos. The tread wear is even and we have 4/32 tread remaining. Any ideas as what might have caused this unusual wear?

Since it was only on the front tires, I suspect something in the tow assembly. We have a Demco Dominator tow bar and Blue Ox base plate with removable tabs on the Cadillac.

Rex
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Old 10-13-2017, 05:42 PM   #2
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YUP--some towed do, while others don't???? So what to do: 1- rotate tires aggressively [front to back and side to side]--every 5k miles; 2-make sure tow bar is as level as possible; 3-need to investigate if the electro-servo steering components in many new cars is having an impact on wear.
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Old 10-13-2017, 05:57 PM   #3
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That’s some weird wear.....

Is it both front tires with the same wear or only one side?
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Old 10-13-2017, 06:04 PM   #4
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It's looks to be the tires are being drug sideway , during turns ,just my guess .
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Old 10-13-2017, 06:07 PM   #5
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The flaking is on both front tires and both the inside and outside treads. All towing has been on the highway with some gravel in campgrounds.

I took our SRX to a Cadillac Dealer for its oil change and the service technician pointed out the unusual wear. The fronts were rotated to the rear as part of the service.
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Old 10-13-2017, 06:15 PM   #6
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PS--a very modest movement [normal wear and tear] in the tow bar RV receiver hitch connection can translate into some wobble at the towed end of the tow bar--you can use receiver tube stabilizers to tighten up the tow bar connection......DIY/made mine own but "store-bought" are available from Road-master [CW or other RV retail????]
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Old 10-13-2017, 06:39 PM   #7
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Been towing mine for 2 years and never seen this. Looks as if the tire is being dragged sideways. Do you ever notice the car wandering when you check the rear camera?
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Old 10-14-2017, 05:34 AM   #8
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It almost looks like the front wheels are not turning when going around a corner. You might put some tape on the steering wheel so you can see any motion in the rear view camera (or have somebody ride in the car) to make sure the wheel is really turning. Also, forgetting to unlock the steering column just once could do a lot of tire damage.
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Old 10-14-2017, 08:36 AM   #9
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Quote:
Originally Posted by KenSherwin View Post
It almost looks like the front wheels are not turning when going around a corner. You might put some tape on the steering wheel so you can see any motion in the rear view camera (or have somebody ride in the car) to make sure the wheel is really turning. Also, forgetting to unlock the steering column just once could do a lot of tire damage.
The Cadillac SRX does not have a steering lock. But it does look like the wheels aren't tracking the coach in a turn.
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Old 10-14-2017, 01:21 PM   #10
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In addition to the excellent suggestions already offered, I have seen the exact same wear on a non-towed vehicle. The toe-in on the right front tire was way off wile the left front was within spec. The vehicle didn't have a significant pull but the alignment issue caused the front tires to scrub and "chunk" the outside tread.
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Old 10-14-2017, 02:47 PM   #11
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In addition to the excellent suggestions already offered, I have seen the exact same wear on a non-towed vehicle. The toe-in on the right front tire was way off wile the left front was within spec. The vehicle didn't have a significant pull but the alignment issue caused the front tires to scrub and "chunk" the outside tread.
I was assuming the dealer checked that, but badly out of spec toe-in could definitely cause that problem.
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Old 10-14-2017, 05:50 PM   #12
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UPDATE by OP

The Cadillac service technician didn't think it was an alignment problem since both the inner and outer treads have the flaking problem.

I called Michelin today and sent them the photos. They won't provide any advice or make any comments until I take it to a Michelin dealer. I will do that on Monday.
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Old 10-14-2017, 07:10 PM   #13
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I also originally thought the toe was wrong however that seems to not affect the entire tread of both tires, usually just the outside edge.

It will be interesting to see what the cause is on this. Almost like the front of the toad is either being compressed or raised to a point where it’s causing the alignment to go all funky creating major toe in and the excessive wear. Or as mentioned somehow the wheels aren’t turning when your taking a turn, do you ever hear the tires making noises?
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Old 10-14-2017, 07:19 PM   #14
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I hardly know the tow car is behind me, much less hear the tires.
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