What airpressure in my 20"tyres?

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04-08-2010 | 03:01 PM

#11

FRONJONI

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From: Los Angeles, CA

My Ride: 2000 540i/6: Silver

Model Year: 2000

i dunno i've got 36 all the way around on mine...rides pretty soft considering...i havent had any damage...even my tire/wheel guy who is a close friend said 36 is good.

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04-10-2010 | 03:12 AM

#12

bj545i

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My Ride: '06 BMW 550i MSport, Carbon Black,20" Vossen CV-1's,Remus,RPi scoop,H&R. '07 Porsche 997 C4S with Aerokit,iForged 20",X51 engine upgrade,PCCB's,Guards Red.

FFS dude,run around 37psi that is all!!!
You are going to do some fairly high speed (160KPh + driving)and the original card is out the window with 20's,BUT also 40psi will rise to 45psi + with high speed driving!So,that will stress your tires out and you do not want a blow out at 100 MPH my friend.

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04-10-2010 | 03:14 AM

#13

CWS530

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From: St. Louis Burbs, USA

My Ride: 2007 530i. Purchased 6/28/07. Titanium Silver Metallic, Black Dakota Leather, Dark Poplar Trim, Steptronic, Premium Package, Cold Weather Package, Bluetooth, Adaptive Control Xenons. 10/30/07 Added OEM 124s with 245/40/18 & 275/35/18 Michelin Pilot Sport A/S tires. Installed red Cal Coversï¿½ from BavAuto. 11/21/07 Added OEM all-weather floor mats (for winter, carpet in summer) and coat rack. 6/26/08 installed M5-style rear spoiler. 6/30/08 put on red reflectors. 8/22/08 Euro turn signal stickers applied. 3/20/09 Installed Shadowline Trim. 3/27/09 Added Matte Black Kidney Grilles from Trinity. 4/03/09 Installed Bimmian Shadow Matte Black 530i Badges. 4/04/09 Installed LED license plate lights from Trinity. 5/01/09 Installed Brabus Interior LED Kit and White Angel Eyes. 5/02/09 Put in Brabus 6K Fogs. 5/14/09 Removed charcoal filter. 5/15/09 Installed light smoke LED side marker lamps from Trinity. 5/21/09 Sprint Booster. 6/12/09 Painted exhaust tips flat black. 6/13/09 Pulled red Cal Covers and painted calipers low gloss black. 6/27/09 RPI Ram Air Scoop from Trinity. 8/15/09 Installed Brabus's silver invisibulbs front and rear. 9/24/09 Installed R-Dash license plate LEDs from Brabaus (John).

Quote:

Originally Posted by turboawd

yeah definetly run at least 40 psi.

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04-10-2010 | 03:44 AM

#14

JMM525i

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From: Fontana, Ca

i have staggered wheels and ride with 38 psi at the front and 40 at the rear for last couple years, no problems.

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04-10-2010 | 06:23 AM

#15

CWS530

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From: St. Louis Burbs, USA

Quote:

Originally Posted by JMM525i

i have staggered wheels and ride with 38 psi at the front and 40 at the rear for last couple years, no problems.

Sounds great for 19s. The OP is on 20s, so even less sidewall protection.

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04-10-2010 | 07:57 AM

#16

wanker

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Quote:

Originally Posted by Martin.T

As the topic reads.

What tyrepressure should I have in mine Michelin PS II, 285x25x20 in the rear. And in front 245x30x20.

I would be very glad to hear what you run...

I respectfully disagree with most posts. 40 psi is too high for 20" tires, you'll beat yourself up. I run 20" and was advised that for max performance (i.e., track or agressive riding) 32 psi is perfect, howevever, for regular highway driving 35 psi works best. Just my 2 cents.

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