It all depends on what type of driving you do. A tapered bearing has a larger surface area to spread the side load when cornering beacause of the size of the rollers & the race. A "Green" axle bearing has ball bearings in it & has a much smaller contact surface area between the bearing & the race. If you are doing any type of road racing or you put a lot of street driven miles on your car then tapered is a much better way to go. Green bearings offer less rolling resistance & are cheaper & easier to install than tapered & if you are mainly drag racing is what they're intended for. Can you use the Green bearings on the street? Many people do without trouble, but they won't last as long as a tapered bearing will.
