Better take a better look at those 740 wheels. I believe they are 16x8's, basketweave with a flat cap versus 15" 535 with a hex style cap.
The 16" are a nice upgrade for E34's maintaining a stock look but giving a little better performance. They are hubcentric to our cars as well so there is no need for rings. Be sure to get the special tool to remove the caps.
Mike Holbrook
Meridian, Idaho
1992 535im, 17", Euro M5 Throwing Stars 8's & 9's, FK-451 235/45s & 255/40s, M5 Sway Bars 25/20, Conforti chip, Lowes Ram Air, glass sunroof