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.

 

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.

 

From the photo you shared, I can see that for normal speeds (155 MPH or below) and with 3 passengers, your recommended pressure is 35-33 PSI. That is well within both W222s I had (one with 19" and another with 20"). This has nothing to do with performance vs regular driving I guess. I'd really suggest you try the recommended pressure and go from there. Am pretty sure the grib will be even better and surely the car will feel much smoother too. At the end of the day, all of this doesn't matter, what matters the most is what you like and which pressure level you enjoy. BUT… 50PSI? man that's way too high that am afraid isn't even safe… I feel that the tires might even slip this way on a rainy day without enough passengers in the car…

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.

 

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.

 

I run 39-39 in my S-600 which has the same tire widths as my Ferrari at 3200 pounds compared to the S-600 at ~5000 pounds.
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.

 

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.

 

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.

 

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.

 

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....

 

Or: sell the Benz, buy a Prius and donate the proceeds to a veterans charity….

 

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.

 

You certainly are preaching. Couldn’t have said it better than this:

Exactly. Put your money where your mouth is.

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.

 

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

 

Yup 40 seems to be the sweet spot for me as well. Seems to help with pot holes in NYC. When I ran lower I would experience cracks and bends regularly. I refuse to replace another rim. 40 seems to be doing the trick over the last year.

 

Not hot under the collar at all.

Thats just not true. Noisy tires create a much bigger issue than slotted rotors, but I don't run slotted rotors either.

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.

Nobody suggested doing any such thing.



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

 

Been running 40psi on mine. Seems to ride well. I get a little shimmy here and there over bumps but nothing bothersome.