Well, i'm looking at getting a new rear tire again...the Mefo Explorer tire i put on about 3000 miles aqo might get another 1K out of it. The cheng shin c858 i have on the front is still going strong with over 4k on it, it doesn't even look hardly worn (which may explain why the Mefo has worn so quickly since i like to twist the throttle and the front tire leaves the pavement a lot). Most of my riding is on-road, but when i go off-road i like to hit it hard. I've been leaning towards the D606, C858, or possibly the Karoo. I don't think i can justify the money for another Mefo the way i burn 'em up. I want something i can feel comfortable with on longer highway rides, but also tear it up off-road. Any suggestions would be appreciated.