runflats
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From: Helsinki, Finland
My Ride: My ex-ride: EU '08 LCI 520dA. Space Grey, Sport Seats in Black Leather/Fabric Anthracite, Sport Steering Wheel, A/C with Extended Features, Hi-Fi Speakers, Cup Holders, Cruise with Braking function, Folding Rear Seats, Xenons, Park Distance Control.
Originally Posted by Black BMW530iA' post='484472' date='Oct 22 2007, 02:41 PM
And since I live in Sweden where we use bar as a measurement for tire pressure, that would be about 2,5/front and 2,9/rear? 
Yes, I use 2,5 F and 3,0 R.
Seems to be about right for 245/40 18"
PS. 2,0 F and 2,4 R is way too little.
The RF's don't give any harder ride with + 0,5 bars extra,
but rolls better, less tramlinging and saves gas.
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Joined: Oct 2007
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From: Bornem, Belgium
My Ride: 520d M Sport Touring (born November 22nd, 2006)
Carbon Black (metallic), Black Dakota Leather, 18" M135 L/Alloy Wheels with 245/40 R18 93Y Goodyear NCT5 tyres (Run-flats), Manual Transmission, Xenon headlamps, Headlamp-washer system, BMW 6 Disc CD Changer, Navigation-system Professional, Hi-Fi loudspeaker system, M Sport Package, Roof Rails, M-Sports Suspension, Sun Protection Glass, High Gloss Shadow Line, M-Aerodynamic Bodystyling, Anthracite Headlining, Cup Holders, Auto-Dim Interior Mirror, DVD Prep in rear, Side Blinds (manual), Automatic Air Conditioning, M Steering Wheel, Aluminium "Cube Pure" interior trim, Sports Seats, ISOFIX Child Seat System (front passenger seat), Park Distance Control
Originally Posted by Ricracing' post='485027' date='Oct 23 2007, 05:54 PM
Yes, I use 2,5 F and 3,0 R.
Seems to be about right for 245/40 18"
PS. 2,0 F and 2,4 R is way too little.
The RF's don't give any harder ride with + 0,5 bars extra,
but rolls better, less tramlinging and saves gas.
Seems to be about right for 245/40 18"
PS. 2,0 F and 2,4 R is way too little.
The RF's don't give any harder ride with + 0,5 bars extra,
but rolls better, less tramlinging and saves gas.
I just checked the inside of the door-panel in my BMW just to make sure on the recommended tyre pressures for the 245/40 R18 93Y run-flats:
2,0 (front) and 2,4 (rear) is the recommended tyre pressure for a load of max. 4 adults;
2,4 (front) and 2,9 (rear) is the recommended tyre pressure for a fully loaded car (5 adults + load).
Doesn't your car jump all over the place when you're driving on your own with the 2,5 F & 3,0 R pressure ?
Greetz and thanks for your feedback.
P.S.
Congrats on ordering your new 520dA !
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Joined: Apr 2007
Posts: 193
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From: Europe, Netherlands, Near the (German) Autobahn
My Ride: 525d E60
Originally Posted by Black BMW530iA' post='484454' date='Oct 22 2007, 12:39 PM
What is the recommended pressure for runflat tires?
take the pressure from the side pillar at the drivers' side door and add .1 (european type pressure reading, is that bar?)
can try adding .2 as well.
when fully loaded it's different again, as pointed out on the pillar sticker. but for daily driving adding .1 is good.
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Joined: Dec 2004
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From: New Jersey
My Ride: 2001 BMW330ci, Steel Gray, Black leather, Steptronic, PP, SP, PDC, Heated seats, Xenon head lights, HK, 6 disk changer, OEM alarm, OEM clears,Iice white fog lights ,Universal trasnciver, 17 inch Michelin Pilot Sport Tires
2005 530i Titanium Gray,Black leather, Nav.,HUD,PP,CWP,SP,PDC,Xenon lights,Steptronic,Logic 7 sound system,,Fold down read seats,Power shades
ON ORDER
Originally Posted by rayray06' post='483827' date='Oct 20 2007, 10:37 AM
I just hit 17,000 miles and the noise from the Dunlop runflats are unbearable. Took car to dealer where i bought car, service rep acknowledge the fact that there is definitely tire wear on one side and that BMW is aware of the problem with these runflat. Rep suggest i purchase new tires or call Dunlop. Call BMWNA and mentioned bulletin, the response i got was that they have no knowledge of such a bulletin and if there was a bulletin it would only apply to MY2005. I have a 2006 E60 with sport package delivered 06/05. Called Dunlop and their customer service rep was nice and honest enough to say there is a bulletin pertaining to the irregular wear issue. The rep sent me to a Goodyear, (was told that Goodyear acquired Dunlop) tire place but they want documentation from BMW with spec for suspension, wheel alignment, etc. which BMW will not provide, waiting to hear from Dunlop.
Do a search on the subject, SEARCH IS YOUR FRIEND. Good luck on your out come
cheers
vern
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Joined: Apr 2007
Posts: 54
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From: Split/CROATIA
Originally Posted by Black BMW530iA' post='485611' date='Oct 24 2007, 02:40 PM
I checked the spec in my car today and it said front 2,4 bar and rear 2,7 bar f?r 245/40-18
yes, thats how you should control your tire pressure. The back is always more (2.7)... REAR wheel DRIVE
ohh ya , i think we have the same car ...
NICE CAR...
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From: Austin, TX
My Ride: 2004 545i Sport Pak
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Originally Posted by Belgian BMW Fan' post='485103' date='Oct 24 2007, 03:28 AM
Ricracing,
I just checked the inside of the door-panel in my BMW just to make sure on the recommended tyre pressures for the 245/40 R18 93Y run-flats:
2,0 (front) and 2,4 (rear) is the recommended tyre pressure for a load of max. 4 adults;
2,4 (front) and 2,9 (rear) is the recommended tyre pressure for a fully loaded car (5 adults + load).
Doesn't your car jump all over the place when you're driving on your own with the 2,5 F & 3,0 R pressure ?
Greetz and thanks for your feedback.
P.S.
Congrats on ordering your new 520dA !
I just checked the inside of the door-panel in my BMW just to make sure on the recommended tyre pressures for the 245/40 R18 93Y run-flats:
2,0 (front) and 2,4 (rear) is the recommended tyre pressure for a load of max. 4 adults;
2,4 (front) and 2,9 (rear) is the recommended tyre pressure for a fully loaded car (5 adults + load).
Doesn't your car jump all over the place when you're driving on your own with the 2,5 F & 3,0 R pressure ?
Greetz and thanks for your feedback.
P.S.
Congrats on ordering your new 520dA !
I have Dunlop RFTs on 17" rims and the sticker on my car door panel has the exact tyre pressure recommendations like yours (2.0 for front and 2.4 for rear max 4 adults). I have tried using a higher inflation but find the car feels very bumpy so I am sticking to the recommended pressure and checking it every 2 weeks (which is a pain). Seems that the recommended pressures are quite different for various models after reading all these posts, could it be that it is due to run flats and non-run flats have very different recommended pressures? The door sticker is most probably meant for the original factory fitted tyres so if you have run flats from the factory and you subsequently changed to non run flats you might need to get the correct recommended pressuren for these type of tyres.
