I rented one online from Next Level Motoring for $50 for a week. They ship it right to your house and include a heat gun and instructions. I would highly recommend them.
I did have a question for those of you that have rolled your fenders. Did it push the lip of the fender out slightly? That's what happened to mine and I don't know if anyone else would notice unless they were specifically looking for it, but I can tell.
2012 335is coupe, alpine white with red leather interior