Goofyernmost
Well-Known Member
Only until you start driving and the friction from the road and the flexing rubber and inner cords bring it back up. If you put more air in at that time they will just be over inflated once the warm up occurs. The air is still in there unless the tire leaks. Temporary softer tires also help with traction in snow. If the tires have the proper recommend pressure when cool they will not drop that far in cold. At this point I need to remind @Figgy1 that I have spent many long winters in freezing temperatures. I guess what I am trying to say, is that just like when they recommend that you not check them when they are hot, the same applies when they are very cold. Otherwise there should be no problem. Besides if you spend time checking the PSI in cold weather your fingers will get very, very cold and make picking one's nose very difficult, so unless when you look at them and they appear to be going flat (the tires not your fingers) then check them. Most cars now have an automatic tire pressure monitor anyway and it will tell you when more air is needed.Cold weather causes tire pressure PSI to drop
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