f7ben Posted June 23, 2018 Share Posted June 23, 2018 6 hours ago, XCR1250 said: US Interstate highways are designed and built for 80MPH maximum speed so 70 is considered the safety factor knowing some will drive over that..to show that 80mph is the highways design go into any State DOT Div. of Hwys office and ask to see any interstate highways "AS Built" plan, it's available to the public. Probably based on 1960s car tech where cars routinely managed .35 lateral g's on the skidpad Quote Link to comment Share on other sites More sharing options...
XC.Morrison Posted June 23, 2018 Author Share Posted June 23, 2018 2 hours ago, f7ben said: Probably based on 1960s car tech where cars routinely managed .35 lateral g's on the skidpad Exactly, we don’t all drive on 75 aspect ratio bias ply tires anymore. Not to mention how fast some of us are able to blast down a sled trail with no as-built drawings. Quote Link to comment Share on other sites More sharing options...
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