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Old 08-12-2005, 12:24 PM   #1
03GLHWRX
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Default Correct Mounting of Michelin PS2s ???

I picked up a set of Michelin Pilot Sport PS2 tires yesterday. They were mounted on my loose wheels (not on car yet). All are identical but not R/L mirror images of each other as I think they should be. They've all been mounted with the heavy tread blocks to the inside (OK I think), but the curvature of the rain evacuation groove is (assuming you follow gatorback thinking) correct on one side of the car but incorrect for the other side of the car. It looks to me as if there should be two different tire part numbers - one for the RH and one for the LH. I don't see anything on the sidewall that refers to directionality or RH/LH. Is this the way its supposed to be? Also, did they do the right thing in mounting the larger tread blocks to the inside?


Thanks,

Mark



notice that in this stack of four wheels & tires all of the wheels are facing the same direction and all of the tires are the same.
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Old 08-12-2005, 12:59 PM   #2
fliz
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The PS-2 isn't a directional tire, so it doesn't matter which way the horizontal grooves angle.

However, according to the tirerack pic (and common sense), the wider tread block should be mounted to the outside.

If you look at the sidewall, it should be marked "outside" and "inside".

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Old 08-13-2005, 09:38 AM   #3
CGM_WRX
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Quote:
Originally Posted by fliz
If you look at the sidewall, it should be marked "outside" and "inside".
It is marked "outside", they need to be mounted just as shown in the picture.
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Old 08-13-2005, 11:05 AM   #4
vz64
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03GLHWRX, yes, the wider/heavier tread blocks should face outside - you can't go wrong because it says on the tire "outside". Your observation re concave vs convex inner groove is true - there is a difference in the left and right groove pattern (I had the same question when I got my PS2s), but, according to Michelin rep I talked over the phone, it does not affect either wet or dry performance. My winter tires Hankook W300 have similar asymmetrical pattern of grooves from left to right. I believe there are some other tire models designed in the same way.
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Old 08-15-2005, 11:44 AM   #5
03GLHWRX
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Thanks guys. I'll be taking them back for a remounting to get the "outside" to the outside, and I won't be worried about gatorbackness.

Mark
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