The arithmetic to know the diameter of car tire: For Example, your tire is written: P285/60R17; A=285, B=60, C=17 The Tire's Diameter=A*B/500+C*2.54 =285*60/500+17*2.54 =77.38cm P285/60R17, P275/65R17, P265/70R16, P265/65R17, P265/75R15, P245/60R18, P245/55R19, LT245/75R16, etc.
Material: PVC Leather
Help against sun, rain, mud and other elements
Prevent your spare wheel from corroding and make your vehicle more fashion
There is thick elasticated hem sewn inside the mouth of the cover - fits tightly and snugly
Can be used on all car models as long as the tire size is appropriate