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2010 2011 BMW 5 Series Forum F10 Tire Pressures for 20" tires |
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03-15-2014, 07:54 PM | #1 |
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Tire Pressures for 20" tires
Any suggestions on the tire pressures for this set up: 20" BMW 464M wheels with 245/35 R20 (front) / 275/30 R20 (rear). These are on a 2014 550i.
Original tires were 19" 351M set up with 245/40/19 (front) and 27535/19 (rear) with recommended tire pressures of 36 front, 38 rear. |
03-15-2014, 08:10 PM | #2 | |
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03-16-2014, 10:27 PM | #3 |
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Good rule of thumb is to follow the recommended fill pressure for 20 inch wheels in the owner's manual. believe it or not the manual actually gives you various recommendation based on wheel size.
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03-18-2014, 01:13 PM | #4 |
General
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I usually recommend checking the door jamb or the owners manual for the proper pressure recommendations. Then you can adjust them up or down according to your driving style and preferences.
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03-26-2014, 08:57 AM | #5 |
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Drives: 2008 BMW E90 335i
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Once you plus size it, you can't really go by the door jam numbers. The numbers are for the OEM 19" wheels, if you have the M-pkg that is. I'm about to add new 20" wheels and tires this weekend. I'll be running Continental Extreme Contact DWSs 245/35ZR20 (20x9) and 285/30ZR20 (20x10), and I would inflate at least to 38psi front and 40psi back at cold temperature.
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03-26-2014, 08:59 AM | #6 |
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Drives: 2008 BMW E90 335i
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Forgot to mention, the added pressure during plus sizing is to compensate for less side walls and pot holes/bumps.
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