I do alot of crooss-country racing and harescrambles and was just wonder what types and sizes of tires you guys have had good luck with. I have a wr 450. I have been using trelleborg but cant find them in canada any more. I have found a few places in the US but by the time they would get here they would me a $150 tire. I also have been using the cheng shin 755 & 756 5.30's and they worked decent for the price. Your recommendations?