Tire pressure loss.

1NS0MN1A · 11-10-2011, 02:12 AM

Hello all,

I have 19 inch CSL reps, and I was just curious how often we have to fill our tires. It has been really cold lately so that may do it, but today I checked my tires and one of them were at 15psi, another at 20psi, and the rear two were at 32psi. I filled them all to 35psi about 5 weeks ago.

I checked for nails and there is nothing. Is this normal and if not, what can cause this? Thanks again!

Tom K. · 11-10-2011, 11:53 AM

It does sound like you have some sort of a leak in the fronts. You might have the tire valves checked for tightness.

Also, some nails are very difficult to spot - I had one in a DWS for over 4,000 miles but only had to add about 3 psi per week.

Tom

Syndicategt · 11-10-2011, 11:57 AM

Possibly a bent or cracked rim. I had a rear tire which lost about 5 psi a week. I took it off and noticed my csl rep had cracked on the lip. Poured some water over the crack and sure enough, bubbles.

Your valve stems could also be leaking, too many vairables here. Take it to a tire shop.

VMRWheels · 11-10-2011, 12:44 PM

It definitely could be the result of a bend or crack in the wheels, however I'm sure the cooler weather has played a part in it as well. My front wheels were running a little low on air pressure after this last weekend too and they are not bent or cracked.

deliciousE · 11-10-2011, 10:08 PM

I had a very similar problem shortly after installing new tires. Turns out a bit of curb rash during parallel parking punctured my sidewall. A local tire shop dunked the tire and found the small hole. Have you brushed up on any curbs recently?

11-10-2011, 02:12 AM	#1
1NS0MN1A Lieutenant 53 Rep 573 Posts Drives: IS Join Date: Jun 2011 Location: Location iTrader: (7)	Tire pressure loss. Hello all, I have 19 inch CSL reps, and I was just curious how often we have to fill our tires. It has been really cold lately so that may do it, but today I checked my tires and one of them were at 15psi, another at 20psi, and the rear two were at 32psi. I filled them all to 35psi about 5 weeks ago. I checked for nails and there is nothing. Is this normal and if not, what can cause this? Thanks again!
	Appreciate 0 Tweet Quote

11-10-2011, 11:53 AM	#2
Tom K. Major General 125 Rep 5,626 Posts Drives: '07 328iT, '13 Boxster Join Date: Mar 2008 Location: Maryland iTrader: (0)	It does sound like you have some sort of a leak in the fronts. You might have the tire valves checked for tightness. Also, some nails are very difficult to spot - I had one in a DWS for over 4,000 miles but only had to add about 3 psi per week. Tom
	Appreciate 0 Quote

11-10-2011, 11:57 AM	#3
Syndicategt Brigadier General 164 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	Possibly a bent or cracked rim. I had a rear tire which lost about 5 psi a week. I took it off and noticed my csl rep had cracked on the lip. Poured some water over the crack and sure enough, bubbles. Your valve stems could also be leaking, too many vairables here. Take it to a tire shop. __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
	Appreciate 0 Quote

11-10-2011, 12:44 PM	#4
VMRWheels BimmerPost Supporting Vendor 2080 Rep 25,980 Posts Drives: BMW Join Date: Jun 2007 Location: Anaheim, CA iTrader: (4) Garage List 2013 BMW M3 [10.00] 2015 BMW M4 [0.00] 2013 BMW F30 [0.00] 2014 BMW F22 [0.00] 2013 BMW F06 [0.00]	It definitely could be the result of a bend or crack in the wheels, however I'm sure the cooler weather has played a part in it as well. My front wheels were running a little low on air pressure after this last weekend too and they are not bent or cracked. __________________ VMR\|Wheels \| 714.442.7916 \| sales@velocitymotoring.com \| www.velocitymotoring.com \| facebook \| flickr \| Instagram
	Appreciate 0 Quote

11-10-2011, 10:08 PM	#5
deliciousE New Member 0 Rep 16 Posts Drives: 2006 325i 2015 X5 35d Join Date: Apr 2010 Location: San Francisco iTrader: (0)	I had a very similar problem shortly after installing new tires. Turns out a bit of curb rash during parallel parking punctured my sidewall. A local tire shop dunked the tire and found the small hole. Have you brushed up on any curbs recently?
	Appreciate 0 Quote