I used to like Curry's until they sold me a complete front end rebuild for my pickup truck swearing up and down that it would cure this annoying noise and I thought it needed a new spindle or spindles. $1200 later and it's still making the @#$$% noise... well it was when I sold it. I assume it still is.
Mike Fallon in Sterling may or may not sell tires (I assume he does) but he drives a 5er and has mounted tires for me before without making any marks on my 17s at all. I have yet to have to have anyone mess with my 19s but I'll let him try them before anyone else. I've seen his tire machine and it's the kind that grips the wheel from the inside of the barrel with soft pads (well, they're probably nylon or delrin or something.) If nothing else you could buy from TR and ship to Fallon's.