Features With Handle, Easy to Carry Polyester spinning, easy to clean Suitable for general SUV Marked, to distinguish which tyre is suitable for the cover Easy to grasp, Portable It can be free to adjust the size, With ribbon to steady in both sides and It is very convenient to carry Please double check below before you place the order. If your car tyre "R" value is less than "R16", you can choose Small size directly. If your car tyre "R" value is R16,Please check below: Commonly used specification S：Tyre diameter less than 63.7cm L: Tyre diameter less than 76.4cm Calculation method for Tyre diameter: E.g: Tire specifications 195/55R15 Tire Diameter conversion method: Diameter(cm)=W*AR/500+R*2.54 Formula: Diameter= W*AR/500 + 2.54*R= 195*55/500+2.54*15 =59.55 According to the calculation, Small size is suitable. Notice Please double check the size of your tyre before you place the order. If you still make sure which size do you need, please contact us and tell us your specific tire size(like 215/55/R16), then we will calculate the diameter and let you know which size do you choose, thank you.