I learned last night that my model S that I got last month has never had an annual service before and that the previous owner pretty much neglected to maintain anything other than the 12v battery. I am going to have to buy new tires because the previous owner neglected to rotate, balance or have an alignment completed. Since I will be buying $1000 of tires because of the 21" wheels I would prefer not to immediately put another $600+ into the service right away. So to my question, would it be beneficial to complete the service immediately after installing the new tires. Thanks!