Mainly extremely poor customer service - they have never followed up once, I have needed to call them for updates, they scheduled measuring 4 times and never showed up, when I called each night after they were supposed to be there I got some story about something else came up or whatever. Then they keep trying to add on this or that to the original quoted price (bead lock, new padding, etc.) to jack the price up higher and want everything paid in cash (no check, credit card, or anything else).
Before I contracted with them I searched and everything I found seemed very positive, I don't know if I just got a bum deal from them or all the other reviews were faked or whatever.