Loss of air pressure with an RFT on a non-EH2 rim

RIPe34 · 11-10-2007, 09:58 AM

Has anyone here loss air pressure on a run flat tire on a wheel that is not EH2. EH2 wheels have an extra hump that according to my dealer is required to make sure the tire bead does not fold under and pancake like a non-runflat.

Looking on various manufactures sites, Bridgestone UK and Pirelli recommend the use of EH2 rims with their RFT tires whereas the others that I checked do not.

BMW appears to heavily market this in their wheel and tire packages as being a safety requirement since their wheels have the extra ridge.

Has anyone here lost all pressure on a RFT mounted to an aftermarket wheel and had the tire pancake?

EdmBimmer · 11-10-2007, 10:32 AM

Yikes!

I hope you and the car are alright!

RIPe34 · 11-10-2007, 10:56 AM

It didn't happen to me. I'm just checking to see what other people's experience has been with tire pressure loss on non-EH2 wheels.

RIPe34 · 11-12-2007, 06:04 PM

bump

DrewKo · 11-12-2007, 09:53 PM

I am experiencing strange pressure loss in my run flats but on stock sport wheels. My build date is 11/06 if that helps. I am having to put in pressure to one or more of the tires on almost a weekly basis. I am about to complain to the dealership and see what happens.

RIPe34 · 11-12-2007, 10:52 PM

Quote:

Originally Posted by DrewKo

I am experiencing strange pressure loss in my run flats but on stock sport wheels. My build date is 11/06 if that helps. I am having to put in pressure to one or more of the tires on almost a weekly basis. I am about to complain to the dealership and see what happens.

Drewko - you most likely have a small leak. I'm more interested in getting feedback from those with runflats that have had a complete loss of pressure on non-EH2 rims to see if they were able to drive the car at the rated limits on the RFT technology.

11-10-2007, 09:58 AM	#1
RIPe34 Nothing useful to say 0 Rep 32 Posts Drives: 2007 E90 335i Join Date: Oct 2007 Location: North Vancouver, Canada iTrader: (0)	Loss of air pressure with an RFT on a non-EH2 rim Has anyone here loss air pressure on a run flat tire on a wheel that is not EH2. EH2 wheels have an extra hump that according to my dealer is required to make sure the tire bead does not fold under and pancake like a non-runflat. Looking on various manufactures sites, Bridgestone UK and Pirelli recommend the use of EH2 rims with their RFT tires whereas the others that I checked do not. BMW appears to heavily market this in their wheel and tire packages as being a safety requirement since their wheels have the extra ridge. Has anyone here lost all pressure on a RFT mounted to an aftermarket wheel and had the tire pancake?
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11-10-2007, 10:32 AM	#2
EdmBimmer Lieutenant 33 Rep 403 Posts Drives: '10 X5 35d Join Date: Sep 2006 Location: Edmonton iTrader: (5)	Yikes! I hope you and the car are alright! __________________ In the Garage '10 E70 X5d Alpine White LOADED UP - '10 EVO X Wicked White RIP '08 BMW E60 535i - '06 BMW E90 330i - '05 Acura EL - '98 Honda Prelude - '99 Audi A4 - '02 Honda Civic - '06 Nissan Xterra
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11-10-2007, 10:56 AM	#3
RIPe34 Nothing useful to say 0 Rep 32 Posts Drives: 2007 E90 335i Join Date: Oct 2007 Location: North Vancouver, Canada iTrader: (0)	It didn't happen to me. I'm just checking to see what other people's experience has been with tire pressure loss on non-EH2 wheels.
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11-12-2007, 06:04 PM	#4
RIPe34 Nothing useful to say 0 Rep 32 Posts Drives: 2007 E90 335i Join Date: Oct 2007 Location: North Vancouver, Canada iTrader: (0)	bump
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11-12-2007, 09:53 PM	#5
DrewKo Lieutenant Colonel 44 Rep 1,568 Posts Drives: 335i Montego Blue Saddle Brown Join Date: Jan 2007 Location: Atlanta, GA iTrader: (4) Garage List 2007 335i [0.00]	I am experiencing strange pressure loss in my run flats but on stock sport wheels. My build date is 11/06 if that helps. I am having to put in pressure to one or more of the tires on almost a weekly basis. I am about to complain to the dealership and see what happens.
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