The knobs on my rear tire are pretty rounded in the front and loose traction easy. I was looking to replace the tire but see many tires list that they are reversable. Is that the case with all MX tires or not? If I could just reverse it on the rim and get some more miles out of it that would be great. Also what is a good tire for a 00 YZ250 ridden intermediate MX/Trail (Track is hard trail is soft so need a good mix)