I've been plagued with unwanted calls offering repair warranty on my car. For months I couldn't understand who passed along my cell number. Then I registered online to have my tires balanced and rotated at Discount Tires. The ONLY required entry for my car model and type was the YEAR. Within 2 hours of scheduling an online appointment the irritating calls started. Discount Tires!do User's recommendation: Do not schedule online appointments. Call the store directly.