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Volvo XC90 Tires and Wheels

143 messages,  Last post on Nov 21, 2009 at 5:08 PM

You are in the Volvo XC90 / XC60 Forum. Your Hosts are steve_ & tidester

What is this discussion about? Volvo XC90, Tires, Wheels, SUV


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#98 of 143
Re: Excessive rear tire wear [jfgxc90] by qbrozen
Aug 06, 2008 (12:59 pm)
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Replying to: jfgxc90 (Aug 06, 2008 12:29 pm)

Hmmm... no strange noises or vibrations? I would look into the bearing issue stated above. They are a common failure on the XC90s.
 
The dealer isn't completely off... you CAN have rear wheels out of alignment independent of the front wheels. But I think it would be odd.
#99 of 143
Re: Excessive rear tire wear [qbrozen] by jfgxc90
Aug 06, 2008 (1:07 pm)
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Replying to: qbrozen (Aug 06, 2008 12:59 pm)

When I picked up the vehicle from the last service, I noticed right away that the suspension seemed looser than it had been. They told me that it could be the air in the tires, but I checked the pressure, and it was ok.
 
I did have a noise which the dealer identified as a sway bar. I had that replaced yesterday.
#100 of 143
Re: Excessive rear tire wear [jfgxc90] by jim314
Aug 06, 2008 (2:03 pm)
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Replying to: jfgxc90 (Aug 06, 2008 12:29 pm)

On most vehicles with independent rear suspension (like the XC90) the rear wheels can be out of alignment and the front ones in alignment.
 
Is this a FWD or AWD XC90? What was the wear pattern on the worn rear tires? That is, were they worn preferentially on the inside edges? the outside edges? all the way across? cupped?
 
Has the vehicle been towed recently? On this forum, I believe, there was a case of suspension components getting bent due to improper securing of the vehicle to a tow truck. In that case the towing company reportedly paid for the damages.
#101 of 143
Re: Excessive rear tire wear [jim314] by jfgxc90
Aug 07, 2008 (6:52 am)
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Replying to: jim314 (Aug 06, 2008 2:03 pm)

The wear relatively even all the way across, although the outer edge is slightly worse. I have not ever had the car towed, but I am curious if something could have been damaged while they were doing one of the other repairs.
 
I just have difficulty with the thought that the car could have suddenly went out of alignment and chewed through the tires in a matter of 3,000 miles - especially when the majority of those miles were driving at speeds less than 50 miles/hr. All while there is no noticeable change in the steering of the vehicle (ie no significant pull in either direction).
 
I get that it is POSSIBLE...but is it LIKELY...
#102 of 143
Re: Excessive rear tire wear [jfgxc90] by jim314
Aug 07, 2008 (7:52 am)
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Replying to: jfgxc90 (Aug 07, 2008 6:52 am)

See http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=4&.
 
Is this a FWD or AWD?
 
If FWD I have no idea other than misalignment of the rear wheels, e.g. excessive toe in of the rear wheels would scrub the rear wheels and maybe selectively wear the outside edges of the tread.
 
There are implausible ideas like the front brakes are not being applied strongly enough so that too much of the braking is with the rear brakes. But the diagnostics should detect that.
 
Take it to the dealer for an alignment or to an independent alignment shop.
#103 of 143
Re: Excessive rear tire wear [jim314] by jfgxc90
Aug 07, 2008 (5:39 pm)
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Replying to: jim314 (Aug 07, 2008 7:52 am)

We might be getting somewhere...I had my front pads and rotors replaced on my last service as well. How do I find out if the brakes are applying correctly?
#104 of 143
Re: Excessive rear tire wear [jfgxc90] by jim314
Aug 07, 2008 (6:47 pm)
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Replying to: jfgxc90 (Aug 07, 2008 5:39 pm)

The on board diagnostics should indicate if the front brakes were not working, and you would notice a huge increase in stopping distance. Maybe 80% of the braking forces are suppplied by the two front tires and brakes. And if all the braking were being done by the rear wheels, then the rear pads would show extreme wear.
 
The most likely explanation is that when the rear anti-sway bar ends or bushings were replaced the rear wheels were gotten out of alignment. How many miles were on the tires when the service was done? Could it be that the tires were nearly worn out at that point and then 3000 miles later they were definitely worn out?
 
Is this a FWD or an AWD XC90?
#105 of 143
Re: Excessive rear tire wear [jim314] by jfgxc90
Aug 08, 2008 (5:13 am)
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Replying to: jim314 (Aug 07, 2008 6:47 pm)

Based on your response, I would not expect that the problem is the brakes. One thing I love about this vehicle, is that it will stop on a dime. I haven't noticed any change in that aspect.
 
The tires were new in October and November. I have them rotated every 3000/4000 miles and the front tires that were just rotated off the back show very little wear.
 
I believe the vehicle is all wheel drive - it is a T6. How do I know for sure?
#106 of 143
Re: Excessive rear tire wear [jfgxc90] by qbrozen
Aug 08, 2008 (6:22 am)
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Replying to: jfgxc90 (Aug 08, 2008 5:13 am)

How do I know for sure?
 
It'll have an AWD badge on the tailgate.
 
it is a T6
 
Uh-oh.
 
Well, I believe AWD is standard on the T6. But so is a crappy transmission.
#107 of 143
Re: Excessive rear tire wear [qbrozen] by jfgxc90
Aug 08, 2008 (8:34 am)
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Replying to: qbrozen (Aug 08, 2008 6:22 am)

I've heard about transmission problems...I have experienced a couple of times were the vehicled rolled backwards while it was in drive on an incline. The dealer said they couldn't repeat the problem...Luckily my warranty doesn't run out until 100k.
 
Any thoughts on that?

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