Saturday, August 26, 2017

the first four wheel drive at Pikes Peak, check the tire treatment, this is the only time I've seen lateral cuts in tread


http://www.racingpastdevilsplayground.com/2017/04/17/the-first-four-wheel-drive-at-the-pphc/

I posted about the Four Wheel Drive company before, as they invented the 4x4 and got the contract from the US Army with the famous Nancy Hank http://justacarguy.blogspot.com/2012/07/fwd-means-four-wheel-drive-auto-company.html
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1 comment:

  1. bill hollingsworth6:44 PM

    Cutting grooves in a tyre is called siping and the cuts can go in any direction to aid traction. It can give more grip to tyres that have gone hard. https://en.wikipedia.org/wiki/Siping_(rubber)

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