Losing tire pressure

xpcgamer · 06-30-2008, 10:59 AM

At around 8k miles I began to notice my tires where getting cupped. I have non zsp 328i and running the bridgestone RFT. When I checked my tire pressures where around 28 PSi. I rotate and rebalance and now at 10k I check again and they are around 28 to 30PSI. Is this normal and why did'nt the TPM set off my light?

ModBargains.com · 06-30-2008, 05:31 PM

Check your driver's side door. When you open it, on the left side of the driver's side seat, there should be some specifications. The recommended PSI with the stock wheels are there. I believe typically the TPMS goes off when the PSI is 5PSI or more too low.

Beer Goggles · 06-30-2008, 05:44 PM

And all tires loose pressure over time. They also change with temp. You have to set pressure of tires when they are cold.

ModBargains.com · 06-30-2008, 07:04 PM

Oh right, that is correct, thanks for adding that

Nice one

xpcgamer · 06-30-2008, 07:42 PM

I know. I check them in the morning or after the car has been sitting all day and I go to leave the office. Thing is my Pathfinder's light will go off after 1 tire drops by a few pounds. The dealer said the TPMS wont be triggered if all the tires loose air slowly. Whats that about? I could be driving on a long trip and end up with 20PSI in my tires and I get no warning?

TK-421 · 06-30-2008, 08:22 PM

i have nitrogen in my tires. the pressure stays constant longer and i get free refills from where i got it (olin mott tires)

xpcgamer · 06-30-2008, 08:42 PM

Does it ride smoother and less noisey?

homydevil · 06-30-2008, 11:05 PM

Quote:

Originally Posted by xpcgamer

I know. I check them in the morning or after the car has been sitting all day and I go to leave the office. Thing is my Pathfinder's light will go off after 1 tire drops by a few pounds. The dealer said the TPMS wont be triggered if all the tires loose air slowly. Whats that about? I could be driving on a long trip and end up with 20PSI in my tires and I get no warning?

The warning goes off in case of differential in rotating speeds of tires, if all lose air at the same rate , the system cant analize which tire is rotating less
You must have slow leak or something, but first try to inflate the tires according to the scale and load on the car and see where that takes you

xpcgamer · 07-01-2008, 01:59 PM

Well that stinks? Why have a monitor TPM sensor in each wheel? If that was the case wouldn't it just use the ABS sensors? I'll keep an eye on 4. Damn tires seem to wear out pretty quick to. I am hoping they last me to 3/9 when the lease is up. I hope I dont run into this when I lease the next one!

06-30-2008, 10:59 AM	#1
xpcgamer Private First Class 7 Rep 156 Posts Drives: 99 Touring Join Date: Mar 2007 Location: "In the cone of death" iTrader: (2)	Losing tire pressure At around 8k miles I began to notice my tires where getting cupped. I have non zsp 328i and running the bridgestone RFT. When I checked my tire pressures where around 28 PSi. I rotate and rebalance and now at 10k I check again and they are around 28 to 30PSI. Is this normal and why did'nt the TPM set off my light? __________________ 99 528IT,Sport 5Sp,Xenon,Nav,Rear shades
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06-30-2008, 05:31 PM	#2
ModBargains.com Banned 475 Rep 13,583 Posts Drives: JB E92 335i Join Date: Feb 2008 Location: 1721 E. Lambert Rd #C, La Habra, CA 90631 iTrader: (51)	Check your driver's side door. When you open it, on the left side of the driver's side seat, there should be some specifications. The recommended PSI with the stock wheels are there. I believe typically the TPMS goes off when the PSI is 5PSI or more too low.
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06-30-2008, 05:44 PM	#3
Beer Goggles First Lieutenant 6 Rep 310 Posts Drives: 2007 335i E92, 6MT, Sport Join Date: Aug 2007 Location: Riverside, CA iTrader: (0)	And all tires loose pressure over time. They also change with temp. You have to set pressure of tires when they are cold.
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06-30-2008, 07:04 PM	#4
ModBargains.com Banned 475 Rep 13,583 Posts Drives: JB E92 335i Join Date: Feb 2008 Location: 1721 E. Lambert Rd #C, La Habra, CA 90631 iTrader: (51)	Oh right, that is correct, thanks for adding that Nice one
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06-30-2008, 07:42 PM	#5
xpcgamer Private First Class 7 Rep 156 Posts Drives: 99 Touring Join Date: Mar 2007 Location: "In the cone of death" iTrader: (2)	I know. I check them in the morning or after the car has been sitting all day and I go to leave the office. Thing is my Pathfinder's light will go off after 1 tire drops by a few pounds. The dealer said the TPMS wont be triggered if all the tires loose air slowly. Whats that about? I could be driving on a long trip and end up with 20PSI in my tires and I get no warning? __________________ 99 528IT,Sport 5Sp,Xenon,Nav,Rear shades
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06-30-2008, 08:22 PM	#6
TK-421 Registered Sex Offender 573 Rep 4,759 Posts Drives: E46 M3 \| 1JZ S13 Join Date: Jun 2007 Location: Tampa, FL iTrader: (0)	i have nitrogen in my tires. the pressure stays constant longer and i get free refills from where i got it (olin mott tires) __________________ Stop putting stuff like painted reflectors and premium package in your signature. You're embarrassing.
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06-30-2008, 08:42 PM	#7
xpcgamer Private First Class 7 Rep 156 Posts Drives: 99 Touring Join Date: Mar 2007 Location: "In the cone of death" iTrader: (2)	Does it ride smoother and less noisey? __________________ 99 528IT,Sport 5Sp,Xenon,Nav,Rear shades
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07-01-2008, 01:59 PM	#9
xpcgamer Private First Class 7 Rep 156 Posts Drives: 99 Touring Join Date: Mar 2007 Location: "In the cone of death" iTrader: (2)	Well that stinks? Why have a monitor TPM sensor in each wheel? If that was the case wouldn't it just use the ABS sensors? I'll keep an eye on 4. Damn tires seem to wear out pretty quick to. I am hoping they last me to 3/9 when the lease is up. I hope I dont run into this when I lease the next one! __________________ 99 528IT,Sport 5Sp,Xenon,Nav,Rear shades
	Appreciate 0 Quote