Grinding for a Smooth Tire Sidewall - The Sweet Smell of Rubber. Grinding Your Way To A Smooth Sidewall. HOT ROD Staff Writer Mar 01, 2007. See All 9 Photos. See All 9 Photos.

A new grinding system from Germany-based Pallmann enables energy-efficient recycling of vulcanized rubber waste back into fine powder for direct reuse in rubber processing, according to the company.