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Tahoe Suburban Tires and Sensors
I purchased this vehicle new in June 2004, and it currently has 22,000 miles. Twice I have taken it to the dealership because of uneven tire wear and cupping, and have paid for alignments both times and had the tires rotated. With three tires now severely worn, I finally noticed that the vehicle was delivered with mismatched tires. Three tires are Dueler H/Ts (highway tread) and two tires (including the spare) are Dueler A/Ts (on/off road tread). The one A/T on the ground is the only tire not showing uneven wear. All the tires on the ground are 265/70 R17.
From what I have been able to find out, the different tread pattern, with its different rolling resistance and slightly different diameter could have been the cause of the uneven tread wear. I never hit anything or did any off-roading to knock out the alignment, and I always monitored the tire pressure. I have driven probably less than 500 miles in 4-wheel drive.
Any info about what should have been the correct tires that I can bring in to talk to the dealership would be appreciated, along with any other advice or suggestions. I have seen one source site H/Ts as OEM, and another sources sites the Bridgestone catelogue as specifing A/Ts as OEM. Would there be an intentional difference in OEM tires between 2-wheel drives and 4-wheel drives, or between Suburbans and Tahoes?
I know it is odd that I have gone nearly 3 years without noticing the mismatched tires (especially since they are raised white outline tires). The A/T came on the passenger side rear and I approach from the other side at both home and work, and they really don't look that different from the side (although the tread does look very different). I am still a little surprised I did not catch it earlier, but neither did the dealer or assembly plant evidently. Thanks.