Got 2.6 front and 2.4 rear. Tires have plenty of traction but I am switching to WTBs. Reason being that Conti has very poor quality control. Both tires wobble noticeably. I have had bike store check my rims for damage or truing with none found. I have remounted the tires several times and with different rim tape configuration yet the wobble remains. The tires are unrideable as the wobble causes small but noticeable affect on steering on corners. Conti is just not the name it used to be.
I am so glad that I purchased this particular tire. I ride on different surfaces (asphalt, hard pan dirt, mud) and this tire holds up really well. I love the sound a knob tire makes while riding. Will definitely purchase again