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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > Different amount of wear between sets of the same tires?



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      02-23-2011, 12:11 PM   #1
icyhot e92
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Different amount of wear between sets of the same tires?

Hi my car runs continental contiprocontact ssr all around. I replaced the rears last year at 13k with a set of slightly used (slightly below 10/32 thread) of the same exact tires. When I took off the ones that came stock from the factory, they still had excellent tread on them. Now after running the "new" tires for 8k miles I got a puncture and decided to replace them back. With only 8k miles they were worn much further than the original ones (same model) with 5k more miles. Comparing using the tire measurer they use at dealerships (green/yellow/red) the original tires were well in the green zone, while the ones I replaced with wore down to mid yellow zone.

So my question is, what can cause the same tires to wear at different rates. Driving style stayed the same, both went through the same weather changes. I never had a tire rotation, and I am x-drive.
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      02-23-2011, 01:00 PM   #2
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When was the last time you checked your tire pressures after you got the new tires mounted?

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      02-24-2011, 12:35 AM   #3
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consistently. tpms never went off except during extreme temp changes. but always running at least 33 psi all around. these are stock 225/45r17s all seasons. I never went a long period driving on low pressure (tpms warning). Same as the original set.
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      02-24-2011, 03:20 AM   #4
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There shouldn't be that great of a variance in the tire compound as controlled by the manufacturing process.

The biggest factors are:
1) driving style
2) alignment
3) tire pressure

So I'm afraid that if you accounted for all these variables and insist driving style is the same, then it's a mystery.

I'm assuming you check tire pressure regularly to keep it at 33psi all around. If so I think it comes back to driving style, but as there's no way for us to know how you drive, it's really up to you to reexamine and see if you're in denial. If the answer is no, then it's a mystery!
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