Tire experience Q for you. I was on GP4k for years. The sidewalls would always be the first thing to go. I'd still have the "use dimple" in perfect shape on the main tread 4-5000 miles in but the sidewalls would just be disintegrating. I've since moved to schwalbe Pro-One tubeless and having the same experience (but at ~2k for rear). I'm chalking it up to being a larger rider (190lbs) but am curious to hear about others' experiences.
@MarkyV - 31 kona qualifiers 2006-'14
"If you cannot devote the time required to fully maximise your genetic potential, then don't make believe your own science and re-write decades of history of coaching wisdom, and pretend that you can do some magical training program on 8hrs /wk instead of 12-20 and get to the same level in [any endurance sport]. Accept the reality which is that you just have to settle for a performance level which isn't the absolute peak that your body is capable of." - Nathan Townsend
I ka nana no a 'ike -- by observing, one learns | Kulia i ka nu'u -- strive for excellence