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Abstract
This thesis summarizes and reviews designed parts and methodology. Large, ten-ton plus, test machines are used which measure cornering forces and moments on passenger and race tires. These machines depend on an accurate and repeatable road surface friction. However, as tires are worked to the extreme in these tests, the surface abrasion causes particles to show signs of molecular rupture and adhere together. It is known that filled compounds of cis-polyisoprene and poly(ethylene-co-propylene), both develop a tarry liquid surface during abrasion. (Pneumatic Tire Ch 2, 4.4 p 72) As this tarry buildup dramatically affects cornering forces, minimizing this buildup is the goal of this thesis. The machine being used is the M-15 Force and Moment (F&M) tire test machine at UNC Charlotte.