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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > Tyre puncture - what to do / fitting new tyres



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      01-10-2014, 06:22 PM   #23
Kerr
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Quote:
Originally Posted by E90F30er View Post
I've checked the pressures loads of times before - this time looks like my gauge was faulty - giving lower readings when it suited it. I double checked with another gauge. This was what was confusing me. Pumped the tyres to right pressures (2 Bar is 29 PSI Kerr) and reset the RPA and all is fine! Looking like a false alarm from the Tyre Puncture Warning message!

What I wonder is that last time the message came up I took it to the dealer and they said the tyre needs to be replaced. I believe them but I'm curious if I had pumped up the tyre and checked if it had not deflated the new tyre might not have been needed?

P.S.
mob17: Oil level check - simple - BMWs have the electronic dipstick; opening the bonnet with a clean rag at hand not
required.
I'm fully aware that 2bar is 29psi.

Not sure what tyres you have on, but from memory my front tyres should be 2.5-2.7bar depending on load and 2.9-3.2 on the rear. I might be wrong, but only by 0.1 or so.

That's for 19" wheels and I know other sizes are slightly different, but I highly doubt 2bar.
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      01-10-2014, 06:42 PM   #24
mob17
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So are you glad you have an electrical dipstick and not a standard one?
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      01-10-2014, 06:48 PM   #25
Ejog
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Quote:
Originally Posted by mob17
So are you glad you have an electrical dipstick and not a standard one?
The electric dipstick is less accurate if you have deflated tyres though, as the whole car will sit lower.

Last edited by Ejog; 01-10-2014 at 07:32 PM..
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      01-10-2014, 07:00 PM   #26
E90F30er
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For 4 people maximum the pressures on the Driver's door post for 16 and 17 inch RFT are 2.0 bar (29 PSI) front and 2.2 bar (32 PSI) rear. I double checked the PDI (Pre Delivery Inspection) sheet and the dealer has written 2.0 bar for front and 2.2 bar for rear.

(Multiply by 14.5 to convert bar to PSI)

No fiddling with my greasy oily dipstick - what a shame! On CCC iDrive models (i.e. pre facelift) you check the oil level with the engine running even when moving not just stationary on a level surface.

Last edited by E90F30er; 01-10-2014 at 07:10 PM..
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      01-10-2014, 08:43 PM   #27
mob17
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I guess it will take you a while to wish you had a standard one....maybe not
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      01-11-2014, 02:12 AM   #28
E90F30er
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Why? Is the manual method more accurate? You just check the level is between max and min. Electronic method you can "monitor" the level at any time?

Found this:

http://www.e90post.com/forums/attach...1&d=1113840415
The graphics on the iDrive display gone a bit wrong? The top green square in particular isn't fitting in its box?
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