Most people don't know what size tires they have on there vehicle, and that's ok. Your tire size is not needed to purchase your new tire cover. During the payment process you will have the option to enter your tire size. If you are not sure what size tire you have, there will be instructions after you make your payment that will explain how to easily determine what size tire you have. When you know what size your tire is, simply email us with your tire size.    Your tire size can be found on the side wall of the tire and should look something like this example: 225/75/15. Please be sure to check the size on the spare tire, because sometimes the size on the spare tire is different then the size of the tires mounted on the vehicle. Please include the name of the tire cover and the last name on the order with your tire size. This information will help to insure an accurate and speedy transaction and proper fit.    Please note the numbers 15, 16 ,17... refer to rim size only. I need your complete tire size found on the side wall of the tire. In some cases your tire size might look like 30x10.5/15 or 7.00-15. These sizes are more commonly found on trailers and jeeps with larger tires. Please don't guess at what size tire you have. Best regards, Christopher Ursillo.