So, last time we had the tires rotated, they re-aired the tires to 35psi and they reprogrammed the sensors appropriately. Now that the weather is colder, I know that the pressure goes up and down with the temperature, however when we had the ice/sleet storm last Thursday here in Dallas, The hoe was registering 26 and 27 psi on the front and 31 and 31 on the rears. I got the check air pressure warning and the light was on on the dash. I drove the hoe on Saturday and my wife said we needed to put air in the tires. I checked the pressure readouts and they were all reading between 30 and 32psi. Temps were not as cold as Thursday but they were still below 50.

Is anyone else experiencing drastic drops in air pressure from their sensors? Should I add it to my list of things to check/fix for my next visit for the dealer? Any comments/suggestions would be appreciated.

Thanks

 

The air pressure drops with colder tires and when you drive the vehicle or it gets warmer out, the tires heat up thus bringing air pressures back up. Is that what you were experiencing? I used to get low pressure on my Corvette all the time in the cold until my tires came up to temperature. Seems like it's operating normally you may just not be used to dealing with it in the southern climate.

 

Are you running nitrogen??? I think nitrogen may be less likely to change so drastically with the air temp.

Jason

 

When we left Saturday morning for Home Depot, around 9, temps outside had to be around 35 and the pressure was back to 30 on one side and 31 on the other. Sat outside overnight. Not running nitrogen. Will keep an eye on it, I don't drive it everyday, it is the wifes but I am getting tired of her complaining about it.

 

That answers the question why I was noticing fluxuations in my pressure readings with the cold front vs more normal temps!!!

 

Run mine at 35 psi and dropped to ~27 psi at 20F.

 

Yes, experienced the same thing as I also live in Dallas...told wife don't worry & put more air in to get it above 30 psi...all fine.

Which reminds me, to put in Nitrogen...

Can anyone recommend where to get Nitrogen? I heard Costco? Any other places...and costs??

 

We've had some fairly cold weather in SW Washington recently and I have to drag my butt to work at 4:30am everyday. The Tire Pressure warning comes on when I leave, by the time I get to work ~15-20 mins later its usually off. Should have paid more attention in those physics classes...cold air more = more dense