So far, so good. A little over 200 miles on the tires and no issues. Using TPU tubes vs sealant. These 29mm tires Definitely lighter than GP5K’s and Vittori Corsa Pros 28mm tires. Ride and handling quality are very comparable, haven’t ridden in wet conditions yet, they grip in extremely well in dry conditions. Mounted these on ENVE 6.7’s, measure 31mm on front & 30mm on rear. Looking forward to racing on these tires..