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| Benzcowboy Detailing/CarCare Host  Date registered: May 2006 Location: Vehicle(s): 2009 GL450 2005 E320  | Re: Which PSI ratings do we folliow? The best way to find the factory recommended PSI on a Mercedes-Benz is to open the fuel filler flap.  Here is a macro picture of what looks like on my E320.As you can see there are two recommended PSI's one for up to 100 mph and one for over 100 mph . (Picture 1063 (Large).jpg) Attachments ----------------  Picture 1063 (Large).jpg (118KB - 2 downloads) | |
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| Marsden Classic MB Date registered: Apr 2006 Location: Capital City USA Vehicle(s): Mercedes-Benz  | RE: Which PSI ratings do we folliow? God Asian, how high are the tire markings? That's scary!
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| RE: Which PSI ratings do we folliow? Marsden - 6/9/2006 1:04 AM Not to worry Marsden. The ML has been serviced by the dealer until recently (warranty out, as well as the 4 yr/50k mile maintenence). Wanted to know, for the future. God Asian, how high are the tire markings? That's scary!  Edited by AsianML 6/9/2006 9:57 PM | ||
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| RE: Which PSI ratings do we folliow?
Good thing you live in Michigan and not in Arizona or Death Valley. Your tires would have raptured otherwise. I guess you were doing it the Audi way - "Never Follow"* Is this only a US marketing thing?
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| Marsden Classic MB Date registered: Apr 2006 Location: Capital City USA Vehicle(s): Mercedes-Benz | RE: Which PSI ratings do we folliow? Hmm... Death Valley, rapture, makes sense
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| RE: Which PSI ratings do we folliow? depends. most of the time i go for 35psi.. the tires i have on are not the stock tires so i don't think the diagram on the fuel flap applies.  | ||
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| RE: Which PSI ratings do we folliow? Marsden - 6/11/2006 9:00 PM Hmm... Death Valley, rapture, makes sense
Most to the tire pressure blow outs in arizona happen when people come from Flagstaff up North, to Phoenix. They have to much air in the tires from Flagstaff which is quite a bit above Phoenix elevation wise ( I want to say its 6,000 feet difference) and is usually about 20-30 degrees cooler or more. so with the combination of altitude and heat expansion going into phoenix BAM. Driving to and from my friends cabin on 17N I would say its mostly big trucks that have the blowout problem. | ||
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| Benzcowboy Detailing/CarCare Host Date registered: May 2006 Location: Vehicle(s): 2009 GL450 2005 E320 | ||
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| Boneheaddoctor W123 Host Date registered: Jun 2006 Location: Hells half acre (Northern VA) Vehicle(s): '79 300SD, '83 300D, '75 Harley-Davidson Chopper Posts: 310  | ||
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| RE: Which PSI ratings do we folliow? AndrewAZ - 6/20/2006 11:37 PM Marsden - 6/11/2006 9:00 PM Hmm... Death Valley, rapture, makes sense
Most to the tire pressure blow outs in arizona happen when people come from Flagstaff up North, to Phoenix. They have to much air in the tires from Flagstaff which is quite a bit above Phoenix elevation wise ( I want to say its 6,000 feet difference) and is usually about 20-30 degrees cooler or more. so with the combination of altitude and heat expansion going into phoenix BAM. Driving to and from my friends cabin on 17N I would say its mostly big trucks that have the blowout problem. Ambient temperatures and altitude in fact have a minimal effect on tire pressures.Roughly speaking,the pressure will rise abt 1psi for every additional 10f and less than 0.5psi for every 1000 ft of elevation.So in a no-load situation,the at rest difference maybe 5-6 psi. The real demon for tyres is under inflation.This causes a drastic increase in movement of the tyre wall under motion and the friction generates sufficient heat to permanently damage the carcas of the tyre and far more susceptible to failure in the event of an impact. This is the reason that manufacturers advise an INCREASED inflation when the loads on the vehicle are greater due to weight or speed. Tires in good condition can withstand massive over inflation without failure,but the contact patch and therefore grip is substantially reduced.With a reduced contact patch,uneven and more rapid wear will also occur. Generally,stick to vehicle manufacturers recommendations,add 2-4psi for each oversize tyre and err on the side of over inflation,never under inflation. | ||
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