Depends on the motor but I have run wheelchair units with an electronize 30 amp controller and have never had problems. RPM is usually marked on the motor housing. You usually get them as gearmotors with the motor, gearbox and wheels in one unit. You will need to remove the electric brake (the wheels are braked at all times unless the brake is getting 12 volts at a couple of amps - its a safety feature) or power it.
Best approach is to get a pair and try them out.