The E-Sylum:  Volume 7, Number 49, December 5, 2004, Article 17

LINCOLN CENT RECOMMENDED AS TIRE TREAD GAUGE

Dick Johnson writes: " It has long been known to use a 
Lincoln Cent in a way never imagined by its creator 
Victor D. Brenner 95 years ago. That is: to measure the 
remaining depth of tread on auto tires while still
mounted on the car. California law specifies the minimum. 
Auto club executives still recommend using the cent 
to test this. A December 1, 2004 article states how: 

"Place a U.S. penny, Lincoln's head first, into several 
tread grooves. If part of Lincoln's head is covered by 
tread, then more than 2/32-inch tread depth remains. 
When taken care of, tires can last a long time -- often 
40,000 to 80,000 miles, depending on the application, 
said Steve Mazor [California auto club engineer]."

Full story: FullStory

  Wayne Homren, Editor

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