Originally Posted By: ram_man
It has the continental conti pro contacts
Originally Posted By: ARCOgraphite
What are the tires? OEM tires usually have poor treadlife. Ive never got over\ 15K out of cheapo OEM tires with spirited driving.
His OEM ProContacts are either 215/55R16 97H XL 400AA A LRR, or 215/50R17 91H SL 500 AA A tires. Tread depth for both is 10/32" as are the vast majority of ProContacts, but 400 and 500 are not exactly barn burner treadwear ratings. I would expect a tire like that to wear somewhat quickly.
35PSI might be too much, or not. I ran 35 and then 34PSI in my Corolla front's for 64K miles with even wear and long life, but they were different brand tires. I ran higher than doorsill pressures for fuel economy, which worked out well. I also ran 1-2PSI more in the rear tires than front, to lessen the understeer qualities of the FWD system. Supporting the heavier front end was not an issue because I was already well above all minimum pressures.
From the mileage info in the Sig I take it this was the first rotation? If you got 50-66% of the lifetime wear of the tire (3 or 4/32 / (10/32 - 4/32) in 10K, I would look at for alignment issues.