I've been running this mini-t for a few weeks now. Its incredible, brings a warm glow to me every time I blast it along at 50ish MPH. Anyway, I took it over a local disused running track. This place it perfectly flat and offers great grip when dry.
Wow, I just couldn't believe the amount of grip it provided. It ripped the rear CVJ apart and the resulting tumble spit and snapped the front turnbuckles

I've since been there again, and now build up the speed with a tad more care. Grip roll at 50mph is very damaging, and best avoided. I was running for about 5 minutes and again snapped the front turnbuckle, so I think I'll stick to tarmac from now on

Heres a N95 shot of the Mini-t after the first round of damage