cyberlazy

hi guys,
what's the correct tire pressure should i put for my 19" michelin pss tire.
thanks

SnakeDoctor

I would just use whatever is in the inside of your door...panel/sill/whatever.

dudley07726

My E350 Cab with Sport package (staggered tires) has 35/36 psi frt/rear

andrew e coupe

I run 36 front and rear

brianm929

Correct tire pressure is actually on the fuel door.

asualum

brianm929 is correct. I asked my dealer about this as well. You want to go off of the fuel door suggestions, not what's listed on the car door.

MikeDC

The inside of the fuel door indicates 38 PSi in all tires. However, after filling them as indicated, I get an error on the dash. The tires are standard equipment and they're offset so I'm not sure why they would all be the same. There is a separate indication for when the car is under heavy load which puts the rear tires at 45 Psi (I think).

Why would I be getting an error if I'm following the recommendation? Should I just use the numbers indicated for heavy load?

It's a 2013 E550 Convertible.

Thanks!

PaulE550

Did you check and fill them when the tires were cold? Did you reset the dash before filling the tires to clear out the old message? Whatever is on the inside of the fuel door is what you should be filling them to.

MikeDC

Yep, filled when cold. Never had the dash message before. It first came up after filling them.

txjeep

In my 2012 E550 cab there appears to be an option to reset the baseline numbers to whatever they are currently. I have not tried it myself.

Edit: I am speaking of the on-board tire pressure monitoring system.

MikeDC

That would make sense.

Found this online. Might be helpful to others:

https://www.mbusa.com/mercedes/owner...007d184335RCRD

crazy00c230k

Could be your problem, you want to drive around a bit before checking the pressures and filling the tires (unless they are really low). Temperature has a pretty big effect on the pressure inside the tires. If you filled to 38 cold, the pressure numbers could pretty easily go up by a couple of psi when warm.

theraven333

Every time you inflate the tyres it should be done as stated when cold, best time is first thing in the morning. Once inflated you should then do a reset on the via the onboard command reset, this should be done every time, only takes seconds to do!!!
Again as stated the tyre pressures are on the inside of the fuel cap.
When you do a long journey say at motorway speeds then the tyre pressures can increase by upto 10psi when hot. If the reset has not been done when the tyres were last inflated then this can lead to false alarms. Every system works on thresholds of + or - 'x'psi/rotational speed/ride height.

asualum

I've been told that you have to reset the baseline once you're happy with the tire pressure. Otherwise, the light will not go off.

Late

Does anyone else experience loss in tire pressure from only the rear wheels? I see in the owners manual that it may be necessary to inflate tires frequently but i am adding air about once a month.

The rims are stock and i just put a new set of tires on the rears. the slow pressure loss happened with the old and new tires on. The rims are in excellent condition too so is this just normal?

Front wheels do not have this issue.

400ixl

Not experienced that type of pressure loss on mine.

2010_E550

cold pressure - 19"

37 front
38 rear

lat41lon71

I have a 2015 E400 with AMG trim and wheel package. The door label and the gas cap have 2 different inflation values. The fuel filler door has 36 all 'round. The door has 38/44. 18" wheels

PaulE550

Go with the fuel door numbers. Only reason to put a bit more air in the rear tires is if you are loading up the trunk with a lot of weight.

lat41lon71

Sorry to drag this up again. As I look around, I see that this topic is much discussed. I just has 4 new ContiContact put on replacing the OEM Michelins. The tire shop used the door numbers. I backed off the pressure by 3 pounds front and rear as they seemed high especially in this warm Florida climate where they will surely increase as I drive. Why have two tire tables in different places on the same vehicle? As this is my 3rd Merc, I know know that some simple things can be needlessly difficult.

vrmmm

It never ceases to amaze how much slight tire pressures can completely change the handling characteristics of a car. I had the original 18's with stock Pirelli all-seasons running 38psi all around. I always run 1 or 2 psi more than the factory recommendations because I have gotten better tread wear over the years with slightly higher pressures. I recently upgraded to the C63S 19" forged AMG center lock-look wheels, and I mounted Michelin Pilot Sport 4S tires in 235/3517 and 275/30R19 sizes. Before the upgrade, the car always had very predictable handling characteristics, albeit with very low levels of grip. I thoroughly enjoyed the surprising fact (coming from a BMW daily) that this Benz was actually quite tossable and controllable, with predictable power-on oversteer in the lower gears with ease. When I got the Michelin PS4S's, I knew the gorilla grip would change things dramatically, but what I was not prepared for was going from a slight oversteer tendency (FUN!) to an understeer tendency (boring)! I was running the same 38 psi all around, so I bumped the fronts down to 36psi and headed back to my favorite curvy road. I immediately noticed ZERO understeer, and just tenacious grip from the front and rear! Of course, I wanted a bit of my oversteer back, so I bumped the rears up 1psi to 39, and tried again. Sure enough, I can get the tail to step out on demand at will again. AMAZING! This just goes to show, if you are an enthusiast that enjoys more spirited driving, use the factory pressure recommendations only as a baseline and then fine tune the pressures from there to best suit your driving style. Be safe and HAVE FUN!

mikey08

I use normal load.. 33 front 36 rear.. Did not make it up its in the fuel door..

The_Judge

Worse, the recommended pressures are different on the two tables, as I pointed out in this post on the W213 forum: https://mbworld.org/forums/e-class-w...formation.html

Rick-F

There is a M-B accessory for those fretting about the exact amount of pressure that should be in their tires.