The Swivelwheel SW58 model carries the 5-70-8 load range D - 8 ply with a carrying capacity of 1075 lb. with a 100 psi.

The Swivelwheel  SW46, DW58 Swivelwheels & the DW58 Tandem Tow carry the 5-70-8 load range C - 6 ply with a carrying capacity of 910 lb. with a 75 psi.

the Tires sold can be used on any 5 lug rim.