Different Sizes: Our Spare Wheel covers with different sizes, it can meet your different needs, please check the Tire Diameter first before buy. 14" fit for diameter 25.59"-27.2"/65-69cm; 15" fit for diameter 27.55"-29.52"/70-75cm; 16" for tire diameter 29.92"-31.1"/76-79cm; 17" for tire diameter 31.49"-32.67"/80-83cm. PVC Leather: The Spare Tire cover made of heavy duty PVC Leather, which is waterproof, sun proof, dust proof, soft, easy to clean;can protect your spare tire, prevent aging, make it last longer. 31.49"-32.67"/80-83cm. How to Measure: Please measure your tire diameter first before buy, make sure choose the correct size. Pay more attention: it is not the rim size, it is the full tire diameter. Please check the size picture to choose. Elastic Band Design : Our Camper tire covers designed with durable elastic band,easy to install and remove. Wind proof design, prevents wind lofting while driving Fit for Different Cars : The RV Tire Covers fir for many car tires, Jeep, Trailer, RV, SUV, Truck,Campers or any other tire. Please check the correct size before buy Spare Tire Cover PVC Leather Spare Wheel Cover for RV Trailer with American USA Flag for Camper, RV Trailer, Jeep, Truck, SUV 16" (Fit for Diameter 29.92-31.1inch）