I rode these for over a thousand miles and had maybe 20 sealant-proof punctures in that time. I switched to off road tires after that and wore them out (in about 300 miles) without a single flat. Tried the hybrids for awhile and now ride the PMTs, with only one puncture per set after hundreds of miles, stopped by sealants both times. If you enjoy riding off road, ride the knobbies. If you end up off road sometimes but mostly ride pavement, ride the hybrids. If you avoid riding off road, ride the PMTs. Don't buy these. They're not good scooter tires. Too prone to punctures.