Some time ago, before I sold my 159 I changed my 17" multispokes for a set of 18" horseshoes, loved the look but I did wonder about the weight of them. Anyway I was trawling Eper today and found that if you identify an item you can find out its mass, so just in the interests of information, I thought I'd share this with you (the figures are for one wheel - x by 2.2 for old money):
17" multispoke: 13.1kg
18" horseshoe: 14.16kg
18" sport: 12.3kg
Now I know that a wheels mass will affect how the car handles (unsprung weight) and that heavy wheels sap engine power but those figures look pretty hefty (The 17" selespeeds on my 147 are 9.7kg each, 16" elegants 8.9kg in comparison) and the wheel of choice ought to be the 18" sport, being lighter than the standard 17"....
....or even a set of OZ superleggerras (8x18: 8kg, 8x17: 7.4kg, 8x19 8.99kg). OZ state wheels can vary in mass by 5%
Something else that was quite interesting was that the 16" multispokes on my Facelifted 147 were actually heavier than the 17" selespeeds. Perhaps there is a trend towards heavier wheels, durability, resistance to kerbing and so on.
146 1.6TS, 156 2.0TS, 156 1.8TS, 147 1.6TS, 147 2.0TS, 159 1.9JTS, 147 1.6TS, 159 1.9JTDm, Mito 1.4, GT, Giulietta 2.0JTDm, Giulietta 1.4tb, Giulietta 1.6JTDm........