spazlamhaslam Posted July 17, 2014 Share Posted July 17, 2014 I recently bought some tires at a great price, only "500" miles on them, the problem that I didn't realize until after I brought them home is that they must have been mounted on a front or rear wheel drive car previously. so the tread depth is slightly different on 2 of the tires. Do I really need to get them shaved down? If not, is there any particular pattern I should mount the tires in (aka criss cross, or less worn on the front)? I feel like the thickness of a penny or 2 won't make an impact on my diff. But if you disagree, please, let me know. Link to comment Share on other sites More sharing options...
MrTris Posted July 17, 2014 Share Posted July 17, 2014 Well, let me ask you this: Subaru transmissions are expensive. Painfully expensive. Is a good deal on tires worth it, if you're putting your center diff at risk? Link to comment Share on other sites More sharing options...
lee07 Posted July 17, 2014 Share Posted July 17, 2014 As long as its within 2/32 of each other, it should be fine. Link to comment Share on other sites More sharing options...
Dispatch20 Posted July 18, 2014 Share Posted July 18, 2014 It's super easy to measure tire tread depth and tire diameter. There are a couple good topics posted over the years here that will give you every bit of info you need to determine how safe you are. Measuring the outer tire diameter is the safest bet, so take a string or thin measuring tape and wrap it around the outside of the tire. Compare the diameter measure/length on all 4 tires. Are they within 1/4" of an inch (Subaru spec)? If so, you are fine. Alternatively, if your tread depth is within 1/32" or 2/32" of an inch, you are probably fine. Link to comment Share on other sites More sharing options...
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