High Mileage Tires?!?
10-29-2006, 09:44 AM
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High Mileage Tires?!?
So I got a $3 tread depth gauge from Amazon.com (they have great deals on tools surprizingly, but I digress...) I wanted to check the bad news on how much tread I have left on my tires after this season. On the current tires, I did two track weekends (4 track days, maybe 8 hours total) and around 4 autocrosses, plus maybe 10,000 city/highway miles. (Goodyear Eagle F1 GS-D3, 225/40-18)
The Goodyears started with 11/32 inch of tread. Their UTQG rating is 280 AA A. Checking them yesterday, the results were:
The Goodyears started with 11/32 inch of tread. Their UTQG rating is 280 AA A. Checking them yesterday, the results were:
- Average current tread depth is still 8/32 inch. (!) It surprised me I have that much left after this year's abuse.
- Consistent depth across tread. Unlike what I expected to find, tread depth was even across the front tires.
- One unexpected exception on the tread depths. The rear tires were 8/32 on the inside and the middle, but 7/32 on the outside. The only reason I can imagine was that powering out of corners put additional friction on the outside of the rears, such that they wore down slightly more.
- Consistent depth across tread. Unlike what I expected to find, tread depth was even across the front tires.
- One unexpected exception on the tread depths. The rear tires were 8/32 on the inside and the middle, but 7/32 on the outside. The only reason I can imagine was that powering out of corners put additional friction on the outside of the rears, such that they wore down slightly more.
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