tire losing 10psi over night, no holes though

tracerit · 01-02-2013, 06:23 PM

i have non run flat tires on and noticed the last two days in the morning i would have to reinflate the tire 10psi because it drops from 30 to 20 overnight. once it's reinflated, everything is ok and i've driven 60 miles with no issues. i took a look at the tire and don't notice any obvious holes or punctures. the tire is still good (a year old) and i would prefer not to have to replace it. should i try one of those slime things to hopefully plug up whatever is causing the slow leak?

dpilat8588 · 01-02-2013, 06:37 PM

my tires would sometime drop a couple psi on cold nights, but never 10...sounds like you might have a very small leak, one that is too minimal to even notice. I would go to where you bought the tire from and have it inspected

Meeni · 01-02-2013, 06:44 PM

You can "paint" the tire with soapy water, the bubbling will show you from where it leaks.

Can be a very small puncture (can be repaired in thread with a plug) or maybe the tire is simply not sealed properly at the bead, or at the valve stem.

Game · 01-02-2013, 07:02 PM

Other than the obvious tire leak, are you running aftermarket multi-piece wheels? If so sometimes the rivets become loose and air leaks.

tracerit · 01-02-2013, 07:35 PM

i bought the car used and the previous owner had just gotten the tires and wheels installed. i haven't had any issues for the year since i've had it. i don't recall going over any bumps or potholes (i always avoid them with the wheels being 19" and all). the wheels are Miro 111s.

i'll do the soap test later this weekend.

zipstic · 01-02-2013, 08:40 PM

There could be a leak in the valve stem too. As others have mentioned the bead may need to be resealed or there could be a small crack in the wheel. I'd take it into the tire shop and they'll figure it out. You can do the soapy water trick, but even if you find a leak you're still going to have to go in to the tire shop and get it fixed.

cdgatti · 01-03-2013, 05:01 AM

definitely a leak, or you have a 100F day/night temperature swing!!!!!!!!!

2wheelsrbetter · 01-03-2013, 11:14 AM

sounds like you have a hairline crack in the wheel

Rmk392 · 01-03-2013, 12:29 PM

put some soap water into your valve stem and see if any bubbles start coming up.

01-02-2013, 06:23 PM	#1
tracerit Captain 139 Rep 804 Posts Drives: 13 BRZ Limited 6MT Join Date: Apr 2006 Location: Huntington Beach/OC, CA iTrader: (9)	tire losing 10psi over night, no holes though i have non run flat tires on and noticed the last two days in the morning i would have to reinflate the tire 10psi because it drops from 30 to 20 overnight. once it's reinflated, everything is ok and i've driven 60 miles with no issues. i took a look at the tire and don't notice any obvious holes or punctures. the tire is still good (a year old) and i would prefer not to have to replace it. should i try one of those slime things to hopefully plug up whatever is causing the slow leak?
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01-02-2013, 06:37 PM	#2
dpilat8588 Captain 68 Rep 614 Posts Drives: E92 M3 Join Date: Oct 2012 Location: CLE iTrader: (1) Garage List 2010 BMW M3 [0.00]	my tires would sometime drop a couple psi on cold nights, but never 10...sounds like you might have a very small leak, one that is too minimal to even notice. I would go to where you bought the tire from and have it inspected
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01-02-2013, 06:44 PM	#3
Meeni Gateropode 329 Rep 2,848 Posts Drives: BMW 330i 06 Join Date: Apr 2012 Location: TN iTrader: (0)	You can "paint" the tire with soapy water, the bubbling will show you from where it leaks. Can be a very small puncture (can be repaired in thread with a plug) or maybe the tire is simply not sealed properly at the bead, or at the valve stem.
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01-02-2013, 07:02 PM	#4
Game ------ 7397 Rep 10,208 Posts Drives: G87 M2 (sold) Join Date: Aug 2010 Location: Chicago'ish iTrader: (25)	Other than the obvious tire leak, are you running aftermarket multi-piece wheels? If so sometimes the rivets become loose and air leaks. __________________
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01-02-2013, 07:35 PM	#5
tracerit Captain 139 Rep 804 Posts Drives: 13 BRZ Limited 6MT Join Date: Apr 2006 Location: Huntington Beach/OC, CA iTrader: (9)	i bought the car used and the previous owner had just gotten the tires and wheels installed. i haven't had any issues for the year since i've had it. i don't recall going over any bumps or potholes (i always avoid them with the wheels being 19" and all). the wheels are Miro 111s. i'll do the soap test later this weekend.
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01-02-2013, 08:40 PM	#6
zipstic Major 484 Rep 1,188 Posts Drives: 2008 e92 335xi Join Date: Sep 2011 Location: Minneapolis iTrader: (1) Garage List 2008 335xi Coupe [10.00]	There could be a leak in the valve stem too. As others have mentioned the bead may need to be resealed or there could be a small crack in the wheel. I'd take it into the tire shop and they'll figure it out. You can do the soapy water trick, but even if you find a leak you're still going to have to go in to the tire shop and get it fixed. __________________ http://www.ishopwheels.com
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01-03-2013, 05:01 AM	#7
cdgatti Colonel 255 Rep 2,547 Posts Drives: e90 328i Join Date: May 2011 Location: KY iTrader: (4)	definitely a leak, or you have a 100F day/night temperature swing!!!!!!!!!
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01-03-2013, 11:14 AM	#8
2wheelsrbetter Lieutenant 30 Rep 516 Posts Drives: hot rod Join Date: May 2009 Location: at the beach iTrader: (10)	sounds like you have a hairline crack in the wheel __________________ 07 e90 335i 13 mk6 GTI 13 f30 335i
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01-03-2013, 12:29 PM	#9
Rmk392 First Lieutenant 28 Rep 367 Posts Drives: E92 Join Date: Apr 2012 Location: CA iTrader: (0)	put some soap water into your valve stem and see if any bubbles start coming up.
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