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      09-08-2006, 02:59 AM   #6
carl_d
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Drives: E90 335i M-Sport N55 6SP Nov10
Join Date: May 2005
Location: UK

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Let us know how it works out. With winter coming, pressures will fall quickly due to lower temp (0.1 Bar down for every 10C drop). It was probably okay in summer due to higher temps. Much lower and you could loose grip!

I think the BMW spec is good but they are for 4 passengers - if you drive mainy on your own then I think a little lower is okay, say 0.1 Bar. I find that tyre fitters seem to think ALL cars need ~30psi/2.0Bar.

Are they wearing evenly?

My wife thought the same but did so! I got my own back with a full Swissol valet

I also wonder, if the factory tyres may have been a newer spec - softer - as I keep reading about 1st, 2nd, 3rd and even 4th generation RFT tyres??

I will check gauge against another I have as they can go awol.

Thanks for the suggestions.

Quote:
Originally Posted by 2GPP
Correct 2.9 Bar is what BMW recommend according to the info chart on the door pillar. 3.3 Bar 5 up with luggage!!The tyre fitter was shocked they should be so high and recommended a lower pressure...however I guess BMW know best. I think I will increase the pressures a bit now the car is all balanced and see what it is like. currently though it is fine - I have only done about 800 miles mixed driving in last week and it seems fine...although I was past the wear indicator on my previous Bridgestones (16k miles)!!
As I said I could not get any Bridgestones not even from BMW and so ended up paying more for the Michelins - £230 each (including VAT and fitting) and they ended up balancing the wheels all round and check the tracking for no additional cost. Still mighty expensive for tyres though!! Made even worse when the wife thinks she should get a couple of new outfits cause of how much I spent on some "stupid tyres"!!
I would recommend palying a bit with the pressures and checking your gauge is still accurate.
You got me thinking I need to probaly increase my pressures!
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2010 E90 335i M-Sport, 2005 E90 325i M-Sport, 2003 E60 520i, 2002 E46 330i Sport II, 2000 E46 325i Sport I, 1999 E46 318i, 1998 E46 323i SE, 1996 E36 323i SE, 1996 E34 518i, 1995 E36 320iA, 1994 E36 316i
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