What airpressure in my 20"tyres?
04-07-2010, 05:55 AM
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My Ride: BMW 535D Invididual, Hartge, M-Sport
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...
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...
04-07-2010, 08:33 AM
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My Ride: 2005 545i /w Sport pkg - SMG - Nav - Premium pkg - PDC - Ready to begin my modding! =)
You should run the PSI that is designated by BMW on your door jam, regardless of tire size. Even tire manufactures recommend that, because that is the optimum load the car was designed for weight distribution. Others vary tire pressure based on personal needs, but its not the recommended set up.
04-07-2010, 09:02 AM
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You should run the PSI that is designated by BMW on your door jam, regardless of tire size. Even tire manufactures recommend that, because that is the optimum load the car was designed for weight distribution. Others vary tire pressure based on personal needs, but its not the recommended set up.
No way!! go whit the 40-45 psi or else you will distroy a new set of tires.../M
04-07-2010, 09:04 AM
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You should run the PSI that is designated by BMW on your door jam, regardless of tire size. Even tire manufactures recommend that, because that is the optimum load the car was designed for weight distribution. Others vary tire pressure based on personal needs, but its not the recommended set up.
with 20's you really want to run higher psi (a cold 40 is typically the standard) to protect your wheels from streets that are not maintained well. When the wheels heat up from driving they will read about 46-48psi if they are 40 psi when cold.
this way the tire will take the damage and your tire stands a taller leaving less of a chance of damaging an expensive wheel. No one in there right mind is going to track a car with 20's on it if they really want all out performance anyway.
04-07-2010, 09:35 AM
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My Ride: 2005 545i /w Sport pkg - SMG - Nav - Premium pkg - PDC - Ready to begin my modding! =)
You should run the PSI that is designated by BMW on your door jam, regardless of tire size. Even tire manufactures recommend that, because that is the optimum load the car was designed for weight distribution. Others vary tire pressure based on personal needs, but its not the recommended set up.
Ah, so it seems you learn something everyday...I got this from Discount Tires website, so maybe best to check your tire manufacture's website for thier load sheets to get the correct PSI recommendation.
[i]Where To Find Air Pressure Information
The correct air pressure may be found in the vehicle owner's manual or on the tire placard (attached to the vehicle door edge, doorpost, glove box door or fuel door). The placard tells you the maximum vehicle load, the cold tire pressures and the tire size recommended by the vehicle manufacturer. If you have trouble, see a local tire dealer for assistance or use our Store Locator for the nearest Discount Tire or America's Tire location.
Another valuable resource is tire load/inflation tables. Not only will this document tell you the correct tire pressure for stock sizes, but it will provide the information on optional plus sizes as well. A good example would be the findings on a Honda Civic with the stock size 185/65R-14. The recommended air pressure is 28 psi. Plus one size is 195/55R-15 with a recommended air pressure of 32 psi. Plus two size is 205/45R-16 with a recommended air pressure of 36 psi. Note how the air pressure increases with plus sizing to meet the load carrying capacity for the car.[/i]
04-07-2010, 11:28 AM
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My Ride: BMW 535D Invididual, Hartge, M-Sport
I will not race these tyres on a track. BUT!! They will be going through som really high speeds for about 18hours ( distance 2000km one way) nonstop this summer. By high speed i mean 160-250km/h.
I will be going on a roadtrip this summer ( as always) through Europe and the speeds are high, Germany has no speed limits. In other countries either traffic is fast or I´m driving fast.
Should I have 40psi both in front and rear?
I will be going on a roadtrip this summer ( as always) through Europe and the speeds are high, Germany has no speed limits. In other countries either traffic is fast or I´m driving fast.
Should I have 40psi both in front and rear?
04-07-2010, 02:31 PM
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My Ride: 2006 550i, Premium Package, Navigation, Comfort Access, L7 Sound
2004 FX35, Sports Package, Stillen CAI
I will not race these tyres on a track. BUT!! They will be going through som really high speeds for about 18hours ( distance 2000km one way) nonstop this summer. By high speed i mean 160-250km/h.
I will be going on a roadtrip this summer ( as always) through Europe and the speeds are high, Germany has no speed limits. In other countries either traffic is fast or I´m driving fast.
Should I have 40psi both in front and rear?
I will be going on a roadtrip this summer ( as always) through Europe and the speeds are high, Germany has no speed limits. In other countries either traffic is fast or I´m driving fast.
Should I have 40psi both in front and rear?
Some members do 40 all the way around, some do 37 front and 39 rear. I run 40 all the way around as it was advised by my mechanic.
04-07-2010, 08:53 PM
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My Ride: 2004 530i | Sapphire Black | Sport | Premium | NAV | Logic 7 | DPE R07 Variant S Gloss Black with Polished Lip 20x8.5 front 20x10 rear | Falken FK452 tires 245/30/20 front 275/30/20 rear | H&R Coilovers | Smoked Tail Lights | M5 trunk spoiler | AC Schnitzer style roof spoiler | HID 8000K headlights & foglights | 35% tint all around | Sprint Booster | Speed Innovation ECU tuning | M5 trunk finisher | M-Tech body kit | Remus Quad Exhaust | AC Schnitzer style pedals | Euro Stickers | RPi Ram Air Induction | Smoked LED Side Lenses | AC Schnitzer style e-brake handle | AC Schnitzer style shifter | AC Schnitzer style iDrive knob | AC Schnitzer style carbon fiber diffuser | carbon fiber hood/trunk/steering emblems | carbon fiber grilles | carbon fiber door pillars | MTEC v2 Angel Eyes | Hamann style carbon fiber splitter
40psi on all