There are three types of rail car wheel sets: 50 ton 33 wheels and axle weigh 2200 lbs 70 ton 33 wheels and axle weigh 2400 lbs 100 ton 36 wheels and axle weigh 2950 lbs. There are three types of rail car wheel sets: 50 ton 33 wheels and axle weigh 2200 lbs 70 ton 33 wheels and axle weigh 2400 lbs 100 ton 36 wheels and axle weigh 2950 lbs.