I had my tire pressure sensor go off last week. So I checked all my pressure in my tires and they were low 3psi, so I filled them up. Today my pressure sensor has gone off again. I cannot believe that they are low again. however, here in VA we went from cold weather back to in the 70's this week. Can this be the cause and now I have to let air out?? Will the sensor go off if you have to much tire pressure??

 

I was trying some different pressures yesterday trying improve ride quality. I left all four at 28 PSA to try for a day or two. This morning I had a TPS light. ~60F degrees yesterday, ~40F this am. Light stayed on for 41 mile drive. Can't imagine 28 PSI is too low. Will report back once I pump 'em back up.

 

Yes, temp change like that can make your tires go low within a couple days.

I drive from Phoenix to Prescott (+/-30 degrees or more) often and need to add air from time to time.

 

i had mine go off the other day after we were glowing in a warm spell of 50-60 degrees and then it dropped to 15
it was the first time i heard the warning since only having the car a month
the warning went off within a block of pulling out of the driveway
i added 2 lbs of air and the warning light went off a few blocks later
its below zero now with wind chill and am wishing it was warmer!

 

It's normal to lose about 1 psi for each 10 degree F drop in ambient temperature.

 

I checked my tire pressure when I got home and found that three tires had 40psi and the other had 35psi. So I brought all my tires pressure down to 35psi. I might have to had some more air tomorrow since the tires were warm. If I keep having problems than I may have a bad sensor.

 

Make sure you check your pressures before you leave, not when you get home. A tire that's been driven any distance can easily be 4-5 psi higher than a cold one in addition to the ambient temperature factor mentioned above.

 

28 psi is definitely low and would be considered unsafe for braking, handling, wear due to heat build up and poor road control. 35 is recommended.

 

Nope. The Infiniti tire sticker thingy in the driver door jamb sez 30 PSI front and rear. Max inflation pressure according to the tire is 34 PSI. I ran 28 (or so I thought, see below) as an experiment looking for better ride quality. 28 might have measurable effects on the attributes you mentioned, but certainly would not be cosidered "unsafe".

BTW, I checked all four again with a digital guage and found three at 27 and one at 26.5. I used a stick-guage to set them at 28, so I guess it was off a bit. I suppose the 26.5 tire set off the sensor. I brought them all back up to 30 with the digital guage and the light went out. Didn't seem to make a big difference in ride quality anyway. Turanza's are crap. :thumbdown

 

I went and put air in my tires this morning and the sensor went off. I had to put 37psi in them. So I will see if it comes back on when the temp drops from 67 degrees to 40 degrees this weekend.

 

Can you used the stock tire sensors on an aftermarket rim??