I had two LB rims on my XC bike. Cracked the rear on the third ride. Cracked the front a year later. Now I'm running "name brand" carbon rims and when you compare them to the LB rims, it's very clear that the LB rims are thin and weak... especially the bead. That sad, I've also cracked two of the "name brand" carbon rims. Not worth it. I'm going back to alu rims.