And you're not racing :) Downhill bikes weight 40 pounds, BMX's have 36 spoke wheels for 20" rims, etc.. for good reason: they are built to be good at what the

And you're not racing :) Downhill bikes weight 40 pounds, BMX's have 36 spoke wheels for 20" rims, etc.. for good reason: they are built to be good at what they do. You want to go race faster, you get light wheels, with medium to deep section rims.