Tires

[kiyakubuke]

I have a compressor and a inflator with a pressure gauge that I use to check and fill our tires. temps can vary a lot here in TN, 60 one day, 25 the next etc.. so we have to keep a good check on them. the boxster was riding like the tires were under inflated so I check and they were good. later, my wife said here Mercedes tire pressure warning was popping up. checked her tires and they were good. so I dug out my old tire gauge to double check. apparently the gauge on my inflator is off about 10 psi. both cars ride much better now.
moral of the story, always get a second opinion.