i am changing my rears at 30k but i've heard u should be able to go longer on my stock michelins 18's...is that true?

You should feel lucky that you have made it that many miles. I have about 10k miles on mine and have around 50% or less tread left. I do track my car though.

we had to replace the rears on both our coupes around 20k miles. 30k is a miracle.

30k is ridiculous on pilot sports... i got 18k on mine before switching.

30K is crazy high. Im at 22K and they look like slicks. if only my new volks/tires would arrive.

Just changed mine today at 15K. Rears were dust but fronts still have some wear left.

i have about 20k on my t1-s's. The front insides are worn down almost to the wires, and the rears still have about 3mm of thread so i'll just try to sell them for 50 bux

That pretty damn good wear you got out of those tires.

I have 23K on my, so I'm next. 26% or less tread left.

im at 12.5k and ordered tires earlier today..... i could squeeze maybe 14k outa these i guess.