I know people have been asking for long term reviews of carbon-clinchers, and while this isn't a long term review, more a short term review with a good test of braking performance. When I bought mine (40mm x 27mm wide carbon clincher with basalt brake surface from Rae at carbon-cycles in May 2014) I was concerned about braking on long downhills - and in particular one of my favourite rides - hwy 242 in Oregon (I only get down here 2-3 times a year, but it's awesome!). Back home, Nelson, BC, I knew I wouldn't have to worry about this issue, so figured, worst case, I'd take a 2nd set of wheels if I was doing a big downhill ride with lots of braking (ie. 242). Finally got down to Bend and rode from the MacKenzie River side, to the Observatory at the top and back down. It's about 21 miles up and 3,500 feet, but the fun part is about 8 miles in the middle which is filled with hairpin turns where cars have to slow to 15 or 20mph - plus no shoulder and narrow road, so you have to be careful of RV's over the center line. Pretty good test I figure - though I was nervous. I should also mention, I'm only 140lbs, so if you're 180 or 200lbs, take it with a grain of salt, and also, I've been riding a while (DH, XC, Road - but I'm no cat 1 or 2 racer) and know not to ride my brakes, particularly on carbon rims (I've heard shorter spurts is better, with time in between to cool off). I rode with the blue pads on front, and black prince on the rear (Rae said black prince were ok to use, they are more powerful and apparently generate less heat, but I figured if he was wrong I'd only toast one rim). Conclusion? Wheels survived, no issues at all (yeah!). Granted, aluminum would have been a bit better (I've ridden down it about 5 times on aluminum rims), but no fade, no melting, no bulging or explosions. I wasn't in a pack, didn't have any traffic in front to slow down, road was bone dry, but wasn't going 100% as still a little cautious about fade or explosions. So, different circumstances could lead to different results. But for now, unless I head to the Alps, I'm not to worried about these exploding from braking. Also, I'm running latex tubes with veloplugs and veloflex 23mm tires pumped to 95psi - not a single flat (or explosion). PS - if you're near central Oregon - 2 classic rides - Hwy 242 (particularly great early season (late May early June) when it's closed to cars open to bikes) and Crater Lake. Just thought I'd pass this on.