I went for a toe check. They tried to sell me a tierod end, and I only have about 10K on the one in it, The manager rotated the tierod, and said it was bad. They all rotate even when new. I have done all my front end work for years, and I know my cars intimately. All shops rely on people who do not know anything about their cars to make a bigger ticket. It is sad that they prey on the ignorant, but that is what they are taught. I applied to a parts store for a job about 10 years ago, and they asked what I would sell someone for a tune-up. I answered that most newer cars only need "cap, rotor, plug wires, and spark plugs. The interviewer asked what else I would include. I do not know what else could be needed on a newer car. Some do not have caps and rotors any more. All businesses want to make as much money as possible, and will sell you whatever they can, even if you do not need it.