Spare Tire Cover Vinyl Polar White with Innerliner Fits All 30" Diameter Tires Like 255/75/15, 235/75/16, 225/75/16 New vinyl spare tire cover, 30" diameter Cover has flannel innerliner and embedded bungee cord restraint sewn in cover Soft vinyl is double stitched with corded welt seams Designed to fit on spare tire cover while driving Designed to cover the spare tire to keep it out of the elements like road grime and UV sunrays, protects it from dry rot cracking, plus a covered spare tire looks better than an uncovered tire.