请看看这个网页。。。

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

中间有一段话：

 “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. ”

我原来与你的想法一样，这又是一个surprise。