請看看這個網頁。。。

http://www.drivers.com/article/354

中間有一段話：

 “Another winter no-no, according to the tire experts, is never reduce tire pressures in an attempt to increase traction on snow or ice. It does not work and your tires will be so seriously under-inflated that driving will damage them. ”

我原來與你的想法一樣，這又是一個surprise。