I found a set of Magnesium wheels to buy. Are they lighter than the 2000-2004 thin spoke wheels? Also, since the magnesiums are euro-spec and have a different offset bringing then under the car more, are wheel spacers/adapters safe to use (the ones that have lugs)? Who uses spacers/adapters that can give me input on them? The car will be road raced/driving school.

Thanks