how many miles are the z tires supposed to last. I am losing air rapidly in my tire and they said there is no nails or holes. they think might be from the valve stem. they told me to buy new tires. that the tires are no good anymore that they are to worn. i only have 13k miles on there.

 

I just replaced the original Bridgestones last week. I had 23,400 miles on them. The rears were down to the tread wear indicators. The fronts were a bit better but I went for 4 new Michilin Pilot Sports. I put almost 1,000 miles on them this past week and they are superior in both wet and dry conditions to the Bridgestone factory tires.. I have not experienced any feathering here. I'm not sure if I should have my dealer re-align the front end or not for fear they might screw it up.

Steve (k2we) Dobbs Ferry, NY 24,506 miles since Sept 17,2002

 

heard a few people said it's 20K mile...

 

I replaced mine around 12k miles, and it still has 50% thread left.. so 20k sounds about right...