I used to get the Michelin heavy duties, but I don't think they make those anymore. I have since switched to this one it's only $19.00 on RockyMountainATV.COM "Bridgestone Ultra Heavy Duty Motorcycle Tube". Probably have about 2 years on my current rear tube with typically 2 days a week / 12 month riding schedule (Just got my new trelle front I'm stoked for snow!
). So it's alot of tube with no pinches or stem breaks and my stem will be at a total 65 degree angle after riding. Sometimes I don't even fix it and ride like that for a month before I change out my tires. No lube, no powder and no complaints. Oh yeah and we run 8 to 10 PSI, I typically run 10 but have run 8 with no issues but slams too much as the tire degrades.