and what bearings do you have? how long have you had them? have you done anything special to speed them up in any way to make them even faster then when you bought them (besides breaking in)?
2mins reds a couple of months no
Pig Swiss or Black Panther Swiss Spinning an unloaded wheel doesn't really tell much except if thed bearing is dirty or has failed. A larger wheel will spin for a longer period of time. Thicker lubricants will cause an unloaded bearing to spin for a shorter time, but won't be effected under loads. The only proper test is to use different bearings under identical settings. Have a rider ride down a ramp and see how far he/she goes. Unless you race longboards, skate pools or other transition skating, the need for a high speed bearing is diminished. The average street skate performs tricks around 2-3mph. Transition skaters can reach 30mph and longboards can exceed 50mph.