i just received my new tires and brought them to be mounted on my new bling bling rims (16" x 8"). The shop (Tire Kingdom) said they can't do it because the sidewall is too stiff or something. Has anyone with these tires had a shop tell them they won't fit on 16 x 8 wheel? Does it matter if my aftermarket wheels are alloys as opposed to my stock steel wheels? I think they're being a PITA beacuse I didn't buy the wheels or tires from them. Thoughts?