Originally Posted by RoadTire

Ok, I'm not TH, I'm RT, but I'll pipe in anyway. Of the 3 in my family, I'm on 25 (27) PRO4 Service Course, FB69 is on 23 GP4's, and my other son is on 23's PRO4 Endurance. the GP4 (black) rubber feels more grippy to my thumb. All 3 tires are giving very nice rides. FB69 likes the GP4 (black) that this is his second set, from wearing out the first set. We are all about the same weight (165 - 180...maybe for the boys, but they are tall), 2 alu bikes and 1 carbon bike. I wouldn't sweat any of those 3 tires, even after obsessing about them back in Feb.