How often do I need to pump up run flat tyres?

jobe · 08-17-2013, 04:31 AM

Hi,

So I bought a 335i about 6 months ago and drive about 3.5k miles.

I have had the warning light come up to pump up the tyres twice. Once about at 2.5k miles and once just recently.

Is this normal? I have the 18" RFTs

I have never had a car with RFTs or with a pressure warning system. So I wonder if this is normal for a car but I have never checked.

I am also having a problem with the car pulling to the left (passenger side) which I am taking it to the dealer for tomorrow. This problem persisted after pumping up the tyres to normal pressure on both occasions. I wonder if this is related.

Anyway thanks for the help.

Gary@TireRack · 08-17-2013, 09:19 AM

There is no difference in air retention on run flat versus non run flat tires.

gtaccord · 08-18-2013, 09:42 PM

The age old recommendation is to check the air pressure of all the tires at each gas fill up. With the amount of miles you drive I would check once every month at a minimum. You should also check anytime there is a drastic shift in outside temperature. That is probably why your sensor light came on your dash thlose two times.

08-17-2013, 04:31 AM	#1
jobe New Member 0 Rep 12 Posts Drives: E92 335i Join Date: Aug 2013 Location: UK iTrader: (0)	How often do I need to pump up run flat tyres? Hi, So I bought a 335i about 6 months ago and drive about 3.5k miles. I have had the warning light come up to pump up the tyres twice. Once about at 2.5k miles and once just recently. Is this normal? I have the 18" RFTs I have never had a car with RFTs or with a pressure warning system. So I wonder if this is normal for a car but I have never checked. I am also having a problem with the car pulling to the left (passenger side) which I am taking it to the dealer for tomorrow. This problem persisted after pumping up the tyres to normal pressure on both occasions. I wonder if this is related. Anyway thanks for the help.
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08-17-2013, 09:19 AM	#2
Gary@TireRack Moderator 369 Rep 4,745 Posts Drives: Formerly 1995 M3 Join Date: Oct 2006 Location: South Bend, IN, Tire Rack HQ iTrader: (2)	There is no difference in air retention on run flat versus non run flat tires. __________________ Gary. Tire and Wheel Forum Moderator. Tire Rack Sales Rep Gary@Tirerack.com http://www.tirerack.com/a.jsp?a=AH8&url=index.jsp Please refer to 'Gary/E90 Post' as your previous contact when you order online to help support this forum.
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08-18-2013, 09:42 PM	#3
gtaccord Major 56 Rep 1,464 Posts Drives: 2009 BMW 335xi Join Date: Feb 2012 Location: Maryland iTrader: (7) Garage List 2009 BMW 335i xdrive [0.00]	The age old recommendation is to check the air pressure of all the tires at each gas fill up. With the amount of miles you drive I would check once every month at a minimum. You should also check anytime there is a drastic shift in outside temperature. That is probably why your sensor light came on your dash thlose two times.
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