[widebody911]

It's simple - the "volume" shops just don't give a rat's ass. They employ ($minimum * 1.05) flunkies who, after a certain amount of time mounting tires 8 hours a day, would love nothing better than to see you devoured by a pack of rabid hyenas.

Here's a good one - the local Big-O tires actually gets a surcharge specifically for mounting tires bought at Tire Rack. Seriously! If you take a set of tires in and say you bought them @ WalMart, it's $X to M&B, but if they have a Tire Rack label or you admit that you got them @ Tire Rack, it's $(X + Y) to M&B., where Y, based on aspect ratio, is taken from a table taped to the counter