...These wheels pictued here were manufactured by Minilite but were forged out of Aluminum when the material was changed to save money (Magnesium being more expensive!) The Aluminum counterparts are slightly hearvier but stronger than the Magnesium wheel. These castings have the factory name https://pbase.com/9146gt/image/35180044 and wheel size numbers.

Where to get dimensionally correct 15" vintage racing tires for your 914-6 GT race car http://www.cokertire.com/ Search for TB15 and call a Croker Tire Spcialist for additional details.