1st Low tire pressure warning

tnorton776 · 10-23-2009, 08:22 PM

What is the best tire pressure for a 128i up to 100 mph with perelli run flats? 32 Front and 35 rear? and its strange the low pressure warning comes on because my fronts seem to be barely 1 psi less than when i bought the car 3 months ago...

Tom K. · 10-23-2009, 09:12 PM

The recommended 32F, 35R works well with my Goodyears, but since temps are dropping, I just inflated mine to 35/38. Although my pressures have occasionally dropped by 3 or 4 pounds, I've yet to see the warning. Thought I read somewhere that the warning is triggered by a 25% drop in one or more tires, although the manual simply says "substantial".

Tom

10-23-2009, 08:22 PM	#1
tnorton776 Enlisted Member 26 Rep 44 Posts Drives: BMW 128i 2009 sports package Join Date: Aug 2009 Location: California iTrader: (0)	1st Low tire pressure warning What is the best tire pressure for a 128i up to 100 mph with perelli run flats? 32 Front and 35 rear? and its strange the low pressure warning comes on because my fronts seem to be barely 1 psi less than when i bought the car 3 months ago...
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10-23-2009, 09:12 PM	#2
Tom K. Major General 124 Rep 5,627 Posts Drives: '07 328iT, '13 Boxster Join Date: Mar 2008 Location: Maryland iTrader: (0)	The recommended 32F, 35R works well with my Goodyears, but since temps are dropping, I just inflated mine to 35/38. Although my pressures have occasionally dropped by 3 or 4 pounds, I've yet to see the warning. Thought I read somewhere that the warning is triggered by a 25% drop in one or more tires, although the manual simply says "substantial". Tom
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