1994 BMW 318 Rim and Tire question

Of course the tires will fit any 15" rim, but I doubt the rims will fit. The BMW are usually a metric pattern while the Pontiac may be standard. Besides that the center holes are probably different sizes, this is one you woul dbe best to just pull a wheel and try it. If you do try atest fit, do a front and rear to be sure there are no fender/brake/suspension clearance issues