If i remember right my rear wheel is a r450 laced to a redline low flange hub. Mind you they were tensioned and trued before I got it from a friend who had used it for some time before me. I have been on t for a year and im 250lbs and its still true... it is 36 spoke and Im sure that helps... I went and got the r450 front laced to a formula hub because it was only gonna cost me $53. We shall see how it holds up but I have faith. Anyway for $100 for the set I say go for it. Are they laced to formulas also?