That's a good question, maybe somebody has a good answer, since I don't. My Phantom 200 has now over 15K km on the clock, and the rear tire looks like it could go another 15.... I didn't do too many burn-outs... Met a guy in Ranong who changed the rear tire after 25.000km! Funny thing is, the front tire looks worse, I need a front one first. Bet Metzeler doesn't make Micky-Mouse size... So if somebody has some advice, if there is a better tire than stock, I'd appreciate it!