13" Inch Spare Tire Cover Wheel Cover for All Diameter (55cm-58cm/22"-23") Car PVC Waterproof Dustproof Protector Made from weatherproof leather grain vinyl (PVC faux leather), waterproof, dustproof, windproof, snowproof, rainproof, sunproof, UV resistant , anti-corrosion and moisture-proof. Keep your tires free from scratches, sun damage, bird droppings, rust and dirt, so as to extend the service life of your tires. Easy to install, remove and clean; no tools required.Folds up compact for easy storage. How do you know if this tire cover fits yours? For example, if your tire is P265/70R16, A=275 B=70 C=16, your tire diameter=A*B/500+C*2.54=265*70/500+16*2.54= 77.74cm Product Description Features: 1.HIGH QUALITY: Made from weather resistant leather grain vinyl (leatherette). 2.Easy Installation: Installs easily with no tools required. 3.EASY CLEANING: Just wash and go, the occasional use of a vinyl protector will keep your cover looking great for years to come.Keep your tires free from scratches, so as to make the life of your tires more durable. 4.Make the perfect combination of durability and freeze protection.Protect the tire from various types of weather damage. How to calculate your car tire diameter: Your tire is written with P215/70R16,A=215 B=70 C=16 Your tire is diameter=A*B/500+C*2.54=215*70 /500+16*2.54=70.74CM Size (13 inches) for diameter 55-58cm (22"-23") Waist (14 inches) for diameter 60-69cm (24"-27") Waist (15 inches) for diameter 70-75cm (28" 29" ) Waist (16 inch) for diameter 76-79cm (30"-31") Waist (17 inch) ) for diameter 80-83cm (32") Waist (15 inches) for diameter 82-84cm (33") < p>You need to buy a 15 inch one. Note: Before buying, please make sure your tire diameter and choose the right size.Thank you! Package includes: