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Old 05-24-2007, 11:55 AM   #1
Eluder
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Location: Toronto, Ontario
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2010 WRX Limited
Lightning Red

Default Running different tread tire, any problems?

I recently got into an accident, curbed my car hard (about 45mph) in rain. I killed my front suspension, hub, lca, bearing, etc and my rim and tire and have some slight curb rash on the rear right as well I guess from understeering into the curb. I've learned my lesson to not drive agressively on those lousy RE92s.

Anyway, the car came back from the dealership yesterday, suspension replaced. I didn't want to buy a new rim and tire from the dealer since they are so overpriced. In the mean time, I was lucky enough to get a 16" steelie and an RE92 off my neighbour that used to have a WRX. The tire is the same as my stock ones, 205/55/16 89V, so that's fine, but the tread depth is different, I don't think drastically, but don't know of a methodical way to check.

I am wondering, how long can I drive on this setup? I've got a stock rim coming from a salvage yard, so I won't be on the steelie much longer, but I don't know how long I'll be on the different tread depth tire?

I am either going to get some aftermarket rims and tires and use my stock wheels for the winter, or I'm just going to get a good set of all seasons, yet to decide.

The car feels fine, the only thing is, I think I hear something from the rear diff during decel, almost like the typical clunk (fairly quiet), but I have been running the TiC klunk killer (comfort) for a couple of months and don't recall that being there before, but paranoia could just be setting in for me.

Any advice would be much appreciated, thank you!
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Old 05-24-2007, 12:28 PM   #2
Counterfit
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Since you (and I) have open differentials at either end, any difference in rotational speed will be absorbed there, since it's only one tire.
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Old 05-24-2007, 01:10 PM   #3
Eluder
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Sorry, don't quite understand the impact of this. How long can I drive on this 'setup'? Thanks.

Quote:
Originally Posted by Counterfit View Post
Since you (and I) have open differentials at either end, any difference in rotational speed will be absorbed there, since it's only one tire.
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Old 05-24-2007, 08:18 PM   #4
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You should drive zero feet on it. Open your owner's manual.....read....

1/4" variance in the outside diameter is all you can go. Anything else....go price a new center differential.
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Old 05-24-2007, 09:33 PM   #5
Roo Tech
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NOW!
is the correct thing to do, Do not drive any longer or the $$$ goes up!
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Old 05-24-2007, 09:33 PM   #6
Roo Tech
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NOW!
is the correct thing to do, Do not drive any longer or the $$$ goes up!
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Old 05-25-2007, 08:21 AM   #7
Eluder
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I stopped driving it, plan on getting new tires tonight or tomorrow morning, but that means I have to drive it to the shop to get the tires put on. I really think there's a flaw there if you can't drive on even the spare. So it means if you get a flat, you've gotta call a tow truck and then go buy all new tires? Is this only inherent of AWD systems?
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Old 05-25-2007, 06:39 PM   #8
Eluder
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Picked up a tread depth gauge from my local auto shop. I just did a quick check of all 4 tires and I may have gotten really lucky, but all 4 tires were about 7 to 8/32nds of an inch, including the extra tire I picked up from my neighbour. So I guess I'm fine, but I will double check again later tonight or in the morning.
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