Material: Made Of Strong Waterproof Fabric, Not Only Dust-proof And Water-proof, But Also Sunscreen And Corrosion-proof, Greatly Improving The Appearance Of Vehicles And Keeping Spare Tires Clean.No Tools Required: It Is Easy To Install, Remove And Clean.OCCASION: Universal Models For Jeeps, Trailers, RVs, SUVs, Trucks And Many VehiclesFittings Construction: With Nylon Rope And Clasp, Adjustable Size.Washing Instructions: Use A Rag To Wipe It Clean.Package: 1Pcs Spare Tire Cover.Size Guide:Tire Covers Size 14"" Fits For Tire Diameter 6069cmTire Covers Size 15"" Fits For Tire Diameter 7075cmTire Covers Size 16"" Fits For Tire Diameter 7679cmTire Covers Size 17"" Fits For Tire Diameter 8083cmHow To Calculate Your Tire Diameter?Step 1: Find Your Tire Parameter. It's Written On Your Tire SideStep 2: Calculate Your Tire DiameterIf Your Tire Is Written With P215/60R16, A=215 B=60 C=16.Tire Diameter=A*B/500+C*2.54 =215*60/500+16*2.54 =66.44cmYou Need To Buy The 14"" Cover.