Fit Size: Our Spare Wheel covers with different sizes, meet your different needs. Before buy, please check the FULL Tire Diameter first. 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. PS: it is not the rim size, it is full tire diameter High Quality：The Spare Tire cover made of heavy duty PVC; Waterproof, dust proof, soft, easy to clean；It is perfect for all seasons, keep tire from sun damage,bird drops, rust and dirt How to Measure：Please measure your tire twice to make sure you select the correct size. For more details,please look at the size picture Elastic Band Design : RV tire covers designed with durable elastic band which is easy to install and disassemble,no extra tool needed. Flexible and fast to adjust, prevents wind lofting while driving Application vehicles: Fit for many car tires, Jeep, Trailer, RV, SUV, Truck,Campers or any other tire with corresponding size. Please measure your full tire diameter before buy Spare Tire Cover for RV Trailer, Waterproof PVC Leather Wheel Cover , Camper Tire Covers with American USA Flag for RV Trailer, Jeep, Truck, SUV 16" (for Diameter 29.92-31.1inch)