I see. Velo Mine wheels are hand built, correct? If that's true I'm pretty sure 32 will be plenty enough. I have handbuilt Velocity rims (Fusion front, radial laced/DeepV rear, 3x) that take a 220-lb man bombing off of curbs all the time, and have not been touched in any way since they were bought in February. Correct me if I'm wrong, but aren't Sun rims also known for being sturdy?