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Newspaper
Southern Illinoisan
Location
Carbondale, Illinois, United States of America
Date
Dec 14, 1950
Page
2
A study compares traction of regular natural rubber tires, various winter tires, and tire chains on regular tires on loosely packed snow. Cold synthetic tires show about 35 percent less traction than standard tires with chains and winterized options.
Engineers report tests by the National Safety Council in Clintonville Wisconsin show winterized and mud snow tires may not stop much shorter on glare ice than natural rubber tires while chains stop much shorter. Cold synthetic rubber tires wear better but skid or spin 10 to 35 percent more than natural rubber.
National Safety Council tests at Pine Lake Wisconsin compare 22 winter tire designs across stopping, go traction, and cornering on snow and ice. Findings: reinforced steel chains outperform best specialized tires. natural rubber beats cold synthetic in stopping and traction on snow and ice. synthetic rubber edges in cornering.
Engineers compare conventional natural rubber, cold synthetic, winterized and mud snow tires, and chains to a standard baseline. Results show wide variance with temperature changes and sun on ice, chains improving stopping, with official tests planned for hard packed snow.
Practical driving guidance on braking softly at low speeds, keeping windows clear, checking lights and defrosters, avoiding wheel lock by pumping brakes, and adjusting speed for road and weather conditions. Advises on cautious driving even with chains and emphasizes recognizing danger to avoid it.
A report explains that on wet ice a hard brake can lock rear wheels causing engine stall and possible spin. It notes that hydraulic or fluid coupling prevents this stalling from locking rear wheels.
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