How to determine :
Fits 27" - 29" Tire Diameters. Use On Rv, Trailers, Campers, Cars And Trucks.
How To Choose
1.Measure The Diameter Of Your Tire, Choose The Right Size.
2. Calculate The Diameter Of Your Tire.
1) Check The Number On Your Tire, Like 205 75 R15.
2) For Example: Tire “205 75 R15“
205mm=20.5cm=8.07inch (Tire Width)
75=75% (Flat Rate)
R15=15inch (The Diameter Of Hub)
Tire Diameter=8.07x75%x2+15=27.1inch