That is a good amount of weight savings in a very important spot. He further stated, "It’s the most important kind of weight because it’s unsprung mass and there are also rotating mass advantages. “The carbon fibre wheels are very damage resistant. They’re actually more damage resistant to kerb hits than standard alloy wheels because the damage polishes out really easily. You can scratch it when you park and it’s better to polish out than aluminium. You can have the metal finish to it with the alloy hybrid, but it’s technically a better solution to go all the way and have a full carbon fibre wheel.”
Finally the kind of product development news from BMW that BimmerBoost likes to hear. Apparently leftover carbon fiber from i3 and i8 production is being put to good use, “We have tried to use the leftover raw carbon fibre from i3 and i8 production to make carbon fibre parts, mixed with plastic. We chop up the leftover fibres and mix them all together, so it doesn’t matter where they come from or what their original job was supposed to be. After we cut them up, we mix them with plastic and this mix can be used in a regular plastic-moulding machines, but it comes out stronger and lighter than any thermoplastic. We are the very first car maker to use carbon fibre on an industrial scale. Now are we able to use the leftover from the mainstream production on an industrial scale, too.”
Something performance oriented for enthusiasts may actually come from the i3 afterall. Somewhat amusing that its leftovers are more exciting than the actual car itself.
Keep in mind carbon fiber wheels already exist. The aftermarket already has solutions so if relatively small producers can do it so can a company with BMW's resources and pocketbook.