39.5X13.5R20 tires are 39.5" tall, have a section width of 13.5", and fit wheels with a diameter of 20. The circumference is 124.0" that translates ...
39.5X13.5R17 tires are 39.5" tall, have a section width of 13.5", and fit wheels with a diameter of 17. The circumference is 124.0" that translates ...
39.5X18R16.5 tires are 39.5" tall, have a section width of 18.0", and fit wheels with a diameter of 165. The circumference is 124.0" that translates ...
