Meh, I don't even trust dealerships, at least not the ones in my town. I bought a new set of michelin tires for my tundra a few years back. The tundra has tire pressure sensors. Didn't want a tire shop guy breaking the sensors, so I took it to the Toyota dealership. Watched the mechanic through the fish bowl window. 20 minutes in he's got the laptop hooked up to my truck. Dipshit broke a sensor. At least the truck was in a shop where they stocked the sensors and I didn't have to wait too long. While they did the the tires they did a free alignment check. They handed me a piece of paper with some of the alignment numbers in red, to indicate it's out of specs. I had no issues with pull, drifting, or tire wear, so I declined the alignment. Went home, looked up the alignment specs for my truck, and all the red numbers were actually within specs for my truck. I wish all shops/mechanics were honest, but fact is, the world is full of liars and morons.