Tyre Pressures on new NON-RUNFLATS

strongdeo · 02-13-2011, 03:59 AM

Good morning all

I have finally switched form the dreadful rock hard Bridgestones RF to Conti SC2 all round on the 645 'vert.

Any ideas regarding if I should be running the same tyre pressure as before (BMW recommends 36 rear and 32 front on the door sills).

Sorry this is not an E90 question but the 6 forum is so dead I spend most of my time lurking here.

justa · 02-13-2011, 04:41 AM

i think general opinion is to start with the BMW figures and then experiment.

Some have said that higher inflations stop the tyres wearing on the inners...

I have mine inflated at the very lowest figure BMW suggests just to improve the ride...

HTH

kowalski · 02-13-2011, 06:06 AM

made the change to nrft (cs3 contiseal) recently and after a bit of experimentation I felt happy with +4 at front compared to the recommended values for rft. Anything lower than that and the car rolled far too much going round corners - not nice at all...

Depending on load I up the rear pressures by +2 but for everyday driving I leave it at recommended

tomgrey · 02-13-2011, 12:30 PM

I have a 330d convertible and changed to the conti tyres. I just used the same settings as for the RFTs and I have been happy with the ride. Just had a 335d coupe for a week on RFT and then back into my car, which is more GT cruiser with the conti's. To me that's perfect for a convertible. Can't think of any reason why I would fiddle with tyre pressures. So I suggest you start with the same pressure and only adjust if you really feel you need to.

m1bjr · 02-13-2011, 04:10 PM

I run the oem unloaded values.
Tyre wear is normal and very even so they seem about right.
I drop a few psi when hot on a track.

strongdeo · 02-13-2011, 04:57 PM

Thanks for your comments guys, I am going with the BMW recommended pressures for RFs and to be honest it is a huge improvement with the Contis.

Jeff123 · 02-13-2011, 05:57 PM

Don't go too high just to replicate the runflat effect.

- Paul - · 02-14-2011, 02:15 AM

6 forum is dead - agreed. It was only setup for the new 6 though!

02-13-2011, 03:59 AM	#1
strongdeo Private 22 Rep 85 Posts Drives: F30 330d MSPORT Join Date: Nov 2008 Location: Birmingham, UK iTrader: (0)	Tyre Pressures on new NON-RUNFLATS Good morning all I have finally switched form the dreadful rock hard Bridgestones RF to Conti SC2 all round on the 645 'vert. Any ideas regarding if I should be running the same tyre pressure as before (BMW recommends 36 rear and 32 front on the door sills). Sorry this is not an E90 question but the 6 forum is so dead I spend most of my time lurking here.
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02-13-2011, 04:41 AM	#2
justa Private First Class 20 Rep 150 Posts Drives: 2006 320d M Sport Join Date: Dec 2010 Location: Pride Park iTrader: (1)	i think general opinion is to start with the BMW figures and then experiment. Some have said that higher inflations stop the tyres wearing on the inners... I have mine inflated at the very lowest figure BMW suggests just to improve the ride... HTH
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02-13-2011, 06:06 AM	#3
kowalski Enlisted Member 1 Rep 43 Posts Drives: BMW E91 320D Auto (2006) Join Date: Jan 2009 Location: Cyprus iTrader: (0)	made the change to nrft (cs3 contiseal) recently and after a bit of experimentation I felt happy with +4 at front compared to the recommended values for rft. Anything lower than that and the car rolled far too much going round corners - not nice at all... Depending on load I up the rear pressures by +2 but for everyday driving I leave it at recommended
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02-13-2011, 12:30 PM	#4
tomgrey Private First Class 12 Rep 153 Posts Drives: e93, M sport, 269 alloys Join Date: Nov 2009 Location: bristol iTrader: (0)	I have a 330d convertible and changed to the conti tyres. I just used the same settings as for the RFTs and I have been happy with the ride. Just had a 335d coupe for a week on RFT and then back into my car, which is more GT cruiser with the conti's. To me that's perfect for a convertible. Can't think of any reason why I would fiddle with tyre pressures. So I suggest you start with the same pressure and only adjust if you really feel you need to. __________________ Pro-Nav, Pro sound, comfort, most everything.
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02-13-2011, 04:10 PM	#5
m1bjr LSD - No, you're not seeing things 72 Rep 3,302 Posts Drives: Baby F36 Gran Coupe Join Date: Mar 2010 Location: Plymouth UK iTrader: (4)	I run the oem unloaded values. Tyre wear is normal and very even so they seem about right. I drop a few psi when hot on a track. __________________
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02-13-2011, 04:57 PM	#6
strongdeo Private 22 Rep 85 Posts Drives: F30 330d MSPORT Join Date: Nov 2008 Location: Birmingham, UK iTrader: (0)	Thanks for your comments guys, I am going with the BMW recommended pressures for RFs and to be honest it is a huge improvement with the Contis.
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02-13-2011, 05:57 PM	#7
Jeff123 Jeff 318 Rep 1,451 Posts Drives: 330d M Sport x-drive F30 Join Date: Jan 2010 Location: Yorkshire iTrader: (0)	Don't go too high just to replicate the runflat effect.
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02-14-2011, 02:15 AM	#8
- Paul - Major General 697 Rep 7,308 Posts Drives: see above. Join Date: Apr 2005 Location: Yorkshire, UK iTrader: (5) Garage List 2005 320D SE [10.00] 2005 645 [9.00]	6 forum is dead - agreed. It was only setup for the new 6 though! __________________ My Photos
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