What i will say is that although these tyres cost quite a bit of money (car tyres can be cheaper



It looks like a pocket knife blade. Reluctantly i pulled it out, waited to hear the shhhhhh of air escaping but didnt! I got back on the bike and finshed the ride without losing any pressure. Still this morning it has full pressure. I've done 900kms on these tyres and still they have never left me stranded or needed any sort of tube replacement on a ride.

