Tire Pressure Guidance
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From: Pacific Northwest
2001 S600 V12 Sold, 2011 Jaguar XFR Sold, 2017 S550 4-Matic, 2018 S63 AMG Sedan
I second this. There is no way on earth I will even dare to claim, or believe, that 50 PSI is even a thing for a car like this! I would never even try it. It’s wrong, surely not comfortable, and not as stable no matter whatever kind of illusion one would feel. I surely would rather trust Mercedes engineers than what I read online. Not only that, but being just 1 PSI away from the tire max pressure rating even the cold one is nothing but asking for trouble and risking other’s people life around as well. Am actually shocked that u all were even still debating this. Reading through the various posts sounds like anyway it all started by misreading or misunderstanding where the location of the actual recommended pressure is. Mercedes would gladly recommend 50 PSI if it was safe and best for the car so they can claim higher MPG, but they know it’s not the right number for the car. I mean, seriously, even their recommended tire pressure is exaggerated but at least within the reasonable range.
2018 S63 AMG Sedan Fuel Door recommended Tire Pressure Sept 2024.
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From: Newcastle, WA
2019 S63 4Matic+, 2018 E400 Cabrio, wardens car.
I think the 49/51 recommendation is if you plan on exceeding 155MPH and up to 186MPH. Since both of those speeds are go to jail do not pass go in the state of Washington, I figure I am fine at 40 on a 20" wheel running Michelin A/S4 Plus tires that are not rated for the speeds requiring the higher pressure. This covers me in case I have a full car.
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Therein lies the rub, the pressures are 49/51 F/R, but everybody says that's crazy. Why would Mercedes Engineers say to use those pressures if it would create a problem?
Interesting...I actually drive the car and I kow how it feels. I rode in Superpop's 19 S63 and drove a 22 S580 and my 17 S550 and this car rides as quietly and smooth as those other cars. It's obviously less compliant than the non AMG cars, but SP is running his car at 40 and mine feels just like his. You'll see the recommended presures on the fuel door. And while I've never needed to be at the max tire pressure, it's nice to know that I could if necessary, based on tire pressures. Do other Benz, and/or S-class cars have lower recommended pressures
2018 S63 AMG Sedan Fuel Door recommended Tire Pressure Sept 2024.
Interesting...I actually drive the car and I kow how it feels. I rode in Superpop's 19 S63 and drove a 22 S580 and my 17 S550 and this car rides as quietly and smooth as those other cars. It's obviously less compliant than the non AMG cars, but SP is running his car at 40 and mine feels just like his. You'll see the recommended presures on the fuel door. And while I've never needed to be at the max tire pressure, it's nice to know that I could if necessary, based on tire pressures. Do other Benz, and/or S-class cars have lower recommended pressures
2018 S63 AMG Sedan Fuel Door recommended Tire Pressure Sept 2024.
I always ran my W222 at 32 PSI (I think SW20S even suggested 30 PSI in previous posts I wrote about this subject, but I was afraid I’d damage the wheels, but am sure 30 PSI would ride even better). 32-33 PSI was the maximum I have considered with the W222. Anything above that was a bit stiff.
Last edited by S_W222; Sep 3, 2024 at 11:23 PM.
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2024 S580
Because that isn't what they recommend for your use scenario. Its all right there in the picture of the label on your fuel door. Unless you are driving fully loaded at speeds of 186 MPH, that is not what they recommend.
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S600
BTW I run 38-38 on the street and 35-35 at the track to hit tread temps of 200ºF after a hot session.
Mercedes engineers care about your perception of the car (comfort & handling) and almost nothing with respect to your tire life.
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From: Maryland
2024 S580
Which is what I care about too. I didn't buy a $140,000 S Class to sacrifice ride and handling to save a few dollars on tires. If I have to put tires on it once a year to get all the comfort and performance I'm paying for, so be it.
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From: New Orleans Area
2015 E400 Sedan
Save the planet and all by throwing away good tires to reduce NOISE pollution ... ?? - ??
Fill up them land fills with tires - yeah
No wonder tree huggers hate rich peeps.
Fill up them land fills with tires - yeah
No wonder tree huggers hate rich peeps.
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From: Maryland
2024 S580
Tires get recycled, they don't get thrown into landfills. Sorry, if I cared about the environment more than I care about my own driving enjoyment I wouldn't drive what I drive. You should trade your E400 in on a Prius or something, practice what you preach.
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From: New Orleans Area
2015 E400 Sedan
I am not preaching but just saying...
and they say they recycle tires but how many playgrounds can we build to reuse the tires that get ground while the rest just sit..
My point is why not drive them more and get the life out of them as they intend.
Turn up your radio if the noise is too much and donate the money saved to some veterans charity.
Just another thought is all....
and they say they recycle tires but how many playgrounds can we build to reuse the tires that get ground while the rest just sit..
My point is why not drive them more and get the life out of them as they intend.
Turn up your radio if the noise is too much and donate the money saved to some veterans charity.
Just another thought is all....
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Had: 1987 300TD, Had: 2004 C230 Sport Sedan, Have: 2014 E350 Sport, Have: 2019 S450
I am not preaching but just saying...
and they say they recycle tires but how many playgrounds can we build to reuse the tires that get ground while the rest just sit..
My point is why not drive them more and get the life out of them as they intend.
Turn up your radio if the noise is too much and donate the money saved to some veterans charity.
Just another thought is all....
and they say they recycle tires but how many playgrounds can we build to reuse the tires that get ground while the rest just sit..
My point is why not drive them more and get the life out of them as they intend.
Turn up your radio if the noise is too much and donate the money saved to some veterans charity.
Just another thought is all....
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All Cars Lost To Hurricane Isaac (W124 E420 revived - added 88 Allante 14 S550, 17 S63
good topic,
I have played around a few psi both up and down and have settled on the following across the two cars
S63 - 20" staggered factory wheels and tires - 41psi (the car is relatively harsh, and i find that lower pressures dont help with the harshness but do affect the handling)
S550 - 18" factory wheel with Bridgestone quiettracks (no runflats) - 39psi (Absolutely beautiful ride - quiet, supple, smooth)
the seasonal weather allows for natures tire pressure adjustment, and believe it or not the 1-2 psi change is noticeable in both cars
I like these pressure settings over several years of use, although the AMG has few cumulative miles.
I have played around a few psi both up and down and have settled on the following across the two cars
S63 - 20" staggered factory wheels and tires - 41psi (the car is relatively harsh, and i find that lower pressures dont help with the harshness but do affect the handling)
S550 - 18" factory wheel with Bridgestone quiettracks (no runflats) - 39psi (Absolutely beautiful ride - quiet, supple, smooth)
the seasonal weather allows for natures tire pressure adjustment, and believe it or not the 1-2 psi change is noticeable in both cars
I like these pressure settings over several years of use, although the AMG has few cumulative miles.
The tire pressure listed on the tire information sticker (inside the front door) shows a tire pressure of 42/43 psi. This also seems to be the pressure that the tire pressure monitoring system is set at. However, inside the gas filler door, the tire pressure is shown as 32 psi. Why the difference and which should I be using? When I purchased the car, the tires were roughly 40 psi, and that’s what I’ve used. Should I reduce the pressure to 33 psi?
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From: Maryland
2024 S580
I am not preaching but just saying...
and they say they recycle tires but how many playgrounds can we build to reuse the tires that get ground while the rest just sit..
My point is why not drive them more and get the life out of them as they intend.
Turn up your radio if the noise is too much and donate the money saved to some veterans charity.
Just another thought is all....
and they say they recycle tires but how many playgrounds can we build to reuse the tires that get ground while the rest just sit..
My point is why not drive them more and get the life out of them as they intend.
Turn up your radio if the noise is too much and donate the money saved to some veterans charity.
Just another thought is all....
Sorry, I work hard and I enjoy my money. Not trying to save the world every moment. I do what I can. I pay a lot of money for an awesome car and I want it to perform as well as it can.
Last edited by SW20S; Sep 8, 2024 at 02:04 PM.
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From: New Orleans Area
2015 E400 Sedan
do not take offense and get all hot under collar - I just have a different point of view so no reason to get nasty and call me a tree hugger.
just discussing getting rid of good tires because you say they get noisy,
Hell drilled and slotted brake rotors make more noise than any tire I have ever had except for mud tires on a 4x4 truck when I was 15.
If you wanna waste money on new tires to replace your barely used tires -
That is a good thing for economy and your tire shop who I bet is selling your takeoffs and making a more money...
Like the song - We agree to disagree...
Now what brand of tires you buying so I can get in on that stock - LOL
just discussing getting rid of good tires because you say they get noisy,
Hell drilled and slotted brake rotors make more noise than any tire I have ever had except for mud tires on a 4x4 truck when I was 15.
If you wanna waste money on new tires to replace your barely used tires -
That is a good thing for economy and your tire shop who I bet is selling your takeoffs and making a more money...
Like the song - We agree to disagree...
Now what brand of tires you buying so I can get in on that stock - LOL
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w222 550
I think the 49/51 recommendation is if you plan on exceeding 155MPH and up to 186MPH. Since both of those speeds are go to jail do not pass go in the state of Washington, I figure I am fine at 40 on a 20" wheel running Michelin A/S4 Plus tires that are not rated for the speeds requiring the higher pressure. This covers me in case I have a full car.
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From: Maryland
2024 S580
just discussing getting rid of good tires because you say they get noisy,
Hell drilled and slotted brake rotors make more noise than any tire I have ever had except for mud tires on a 4x4 truck when I was 15.
Hell drilled and slotted brake rotors make more noise than any tire I have ever had except for mud tires on a 4x4 truck when I was 15.
In any event, thats not what we were talking about at all. We were talking about not running crazy high tire pressures and accepting a tradeoff in ride and performance just to get more life out of tires in a high performance very expensive car. What I said was I want the car to perform the best it can, and if that means I have to run lower pressures and take a tradeoff in tire life, I am fine with doing that.
With that said if I have a set of tires that are annoyingly loud I'm going to replace them whether they have life left or not.
If you wanna waste money on new tires to replace your barely used tires -
That is a good thing for economy and your tire shop who I bet is selling your takeoffs and making a more money...
But wait, I thought my used tires were going into landfills? Now they're being resold...isn't that a good thing since your first concern was about the environment? Now it seems to be about money? Woosh go those goalposts lol
Last edited by SW20S; Sep 9, 2024 at 03:59 PM.
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From: Chicago burbs
2015 S550
The tire pressures on the gas door are what the MB engineers computed to give the most compliant ride along with the tires wearing out evenly and at the slowest rate. Those are all figured when the car is cold and hasn't been driven for several hours. Once the tires are fully heated up, the pressure increases 3-4 PSI. The engineers know this too and it goes into their equations. The tire pressures on the gas door are for all styles of tires: all-season, summer, winter, and even the crappy RFT's. Going over or under the recommended PSI will cause the tires to wear out quicker and provide a less than optimal ride.
You should check your PSI weekly, especially with big temperature changes as the pressure can go down or up 1 PSI for every 10 degree changes in temps.
You should check your PSI weekly, especially with big temperature changes as the pressure can go down or up 1 PSI for every 10 degree changes in temps.
Last edited by DaveW68; Dec 6, 2024 at 10:34 AM.
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From: Maryland
2024 S580
The tire pressures on the gas door are what the MB engineers computed to give the most compliant ride along with the tires wearing out evenly and at the slowest rate. Those are all figured when the car is cold and hasn't been driven for several hours. Once the tires are fully heated up, the pressure increases 3-4 PSI. The engineers know this too and it goes into their equations. The tire pressures on the gas door are for all styles of tires: all-season, summer, winter, and even the crappy RFT's. Going over or under the recommended PSI will cause the tires to wear out quicker and provide a less than optimal ride.
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The tire pressures on the gas door are what the MB engineers computed to give the most compliant ride along with the tires wearing out evenly and at the slowest rate. Those are all figured when the car is cold and hasn't been driven for several hours. Once the tires are fully heated up, the pressure increases 3-4 PSI. The engineers know this too and it goes into their equations. The tire pressures on the gas door are for all styles of tires: all-season, summer, winter, and even the crappy RFT's. Going over or under the recommended PSI will cause the tires to wear out quicker and provide a less than optimal ride.
You should check your PSI weekly, especially with big temperature changes as the pressure can go down or up 1 PSI for every 10 degree changes in temps.
You should check your PSI weekly, especially with big temperature changes as the pressure can go down or up 1 PSI for every 10 degree changes in temps.
This is only partly true. I have found over the last 10-15 years carmakers have been increasing their tire pressure recommendations to improve fuel economy, this has a detrimental impact on ride quality. I generally ait my tires 2-3 PSI below what is on the door flap and I find the ride greatly improved with no unusual tire wear.
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From: Maryland
2024 S580
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From: Phoenix
222 S-65
I think the 49/51 recommendation is if you plan on exceeding 155MPH and up to 186MPH. Since both of those speeds are go to jail do not pass go in the state of Washington, I figure I am fine at 40 on a 20" wheel running Michelin A/S4 Plus tires that are not rated for the speeds requiring the higher pressure. This covers me in case I have a full car.
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From: Phoenix
222 S-65
Carlos 48lbs on the 20” wheels your car is equipped with is well worth additional bumps felt the first time a pothole doesn’t wipe out a tire and wheel.
Who let the troll into the room?
