Originally Posted By: GMFan
I had the same OEM tires as your Avalon. Michelin MX4V S8 Energy tires came on my Mazda 6 from the factory and the tires were shot at 3/32 at 29,000 miles with 85% highway miles. They were 205/65R16 and had atrocious snow traction and would lose grip on hills in the rain. In my opinion they were terrible.
The longest wearing tires were on my Saturn SL and were Pirelli P4s and they were on there for what seemed like 80k miles.
120k miles is a lot for any tire. Unless the P.O. did insane highway miles it's possible they used snow tires in the winter and only used those in the summer or something.
From everything I have seen, you were exceptionally fortunate to get that many miles out of a set of Pirelli tires. My last set of Pirelli tires were rated for 65,000, but had to be replaced at 40,000. I traded them for a set of Michelin Destiny, which I am still driving on. they have about 25,000 miles on them, and still have 8/32 depth.
Pirelli makes good tires, with great handling and braking performance. But no one should ever expect a set of Pirelli to make tread wear warranty.