[MykolG]

Originally Posted by Dr. Curve

Agreeing with tjs................BMW dealers have one with a 2.5 inch round face and easy to read dial which features a stainless braid covered 18" hose and BMW roundel on the face........is very good and reads almost identical to my Snap-On which cost three times as much. Get a rotary dial gauge first..........then send it off to be calibrated.......then you will have the exact pressure each time. Use nitrogen to fill the tires and they will hold a stable pressure longer because the gas is totally dry with no variables that humidity can cause.

The other day I had a issue with the tire pressure in my BMW 328i Sport Wagon. I got in the car to go for a drive when a big warning appeared on the dash telling me that one of the tires was low. I got out and looked around and I couldn't see a flat tire. So, I took out my "rotary dial gauge" and found both front tires and the right rear were at 31 psi. The left rear was at 30 psi. This was the morning after one of the coldest nights we've had here [SoCal] in a loooong time. I checked the sticker in the door frame and it said the rear tires are supposed to be 36 psi. The front were ok. Seeing as my air compressor is out now, I took the car to the local BMW dealer and they checked the tires for any FOD [found none] and filled all tires to spec for no charge. Our outside temperature dropped almost 50 degrees during the night.