Are you planning to open a tire and alignment shop or a general repair garage? The only way mounting, balancing, and alignment equipment is a worthwhile investment is for a tire and alignment shop. Making a profit in tires is all about volume, and if you don't plan to develop a large sales volume then you'll find the equipment occupies valuable floor space and doesn't begin to justify the $100K or more investment. OTOH, if you're selling 100 or more tires per day, then you won't have time to spend on any general repair work.