Reduced Unsprung Mass Designs Reopen Passenger Vehicle Interest
A new generation of in-wheel motor designs uses lighter materials and more compact winding configurations specifically to reduce unsprung mass closer to levels that passenger vehicle ride quality standards require, addressing the core objection that has limited adoption beyond specialty vehicles for decades. Schaeffler and ZF Friedrichshafen have both invested heavily in this engineering challenge, recognizing that solving it opens a passenger vehicle market vastly larger than the specialty and commercial segments the category has historically served. Early passenger vehicle pilot programs remain limited in scale, but automaker engineering interest has increased meaningfully as unsprung mass figures approach acceptable levels.
Market Impact: Adds 9 percent annual unit volume








