I have to ask... after spending that much on a wheel can you honestly say you could feel the difference in rotational weight??DJWorm said:I should note that I ran my DyMag Special Magnesium wheels on my Callaway for many years on the street with no problems. These are one piece cast Magnesium. But I was real careful with them. They never see the streets now as they are so hard to get and so valuable...like $3,500 per wheel !!