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This is driving me nuts all of the sudden my tire pressure sensor came on orange.
I'm riding at about 40/41 all the way around.
My tire package is the 285/40 R23 in front and 325/35 R23 in back
There are two PSI charges in gas can and in the door which I posted both.
Which one is it?
Second how come there is no way to check what the current factory TPM is set at? I looked and it only shows you your "current" TPM reading.
I over inflated even to about 44 all the way around and still all orange..and the orange tire sensor light is on.
I even lowered to about 37 and the front's showed "red" and the rear were still orange.
In the end I got frusrated and just set it to about 40/41 all the way around and reset the TPM. Very lame you can't just see what it "should be at" in the computer.
Last edited by Corsop2020; Jun 16, 2024 at 02:52 PM.
This is driving me nuts all of the sudden my tire pressure sensor came on orange.
I'm riding at about 40/41 all the way around.
My tire package is the 285/40 R23 in front and 325/35 R23 in back
There are two PSI charges in gas can and in the door which I posted both.
Which one is it?
Second how come there is no way to check what the current factory TPM is set at? I looked and it only shows you your "current" TPM reading.
I over inflated even to about 44 all the way around and still all orange..and the orange tire sensor light is on.
I even lowered to about 37 and the front's showed "red" and the rear were still orange.
In the end I got frusrated and just set it to about 40/41 all the way around and reset the TPM. Very lame you can't just see what it "should be at" in the computer.
Your sales guys should've set the target tire pressure on delivery day and forgot!
The software not knowing what the car's tire pressure "should be" is not unexpected: every GLS trim (from 450 to Maybach) and every configuration may require a different load pressure (that's why the stickers for the tire pressure exists for your specific car)!
"Should be at" changes with a ton of things....on ours, with our AMG wheels on Contis...42 at all four. This does not match the door (we have it due to comfort). Your results may vary.
"Should be at" changes with a ton of things....on ours, with our AMG wheels on Contis...42 at all four. This does not match the door (we have it due to comfort). Your results may vary.
Agreed that the pressure can be variable based on preference. However, the SA should have made sure a "typical" setting was used so that the OP didn't need to see the warning lights on delivery!
This is driving me nuts all of the sudden my tire pressure sensor came on orange.
I'm riding at about 40/41 all the way around.
My tire package is the 285/40 R23 in front and 325/35 R23 in back
There are two PSI charges in gas can and in the door which I posted both.
Which one is it?
Second how come there is no way to check what the current factory TPM is set at? I looked and it only shows you your "current" TPM reading.
I over inflated even to about 44 all the way around and still all orange..and the orange tire sensor light is on.
I even lowered to about 37 and the front's showed "red" and the rear were still orange.
In the end I got frusrated and just set it to about 40/41 all the way around and reset the TPM. Very lame you can't just see what it "should be at" in the computer.
I have a 2020 GLS580 with the 21” AMG package which includes 275/45 and 315/40/21 Michelin tires. There are two settings for tire pressure, one for “normal load” and one for “maximum” load. For my setup, normal is 34 psi all around, but maximum is 41. Unless I’m taking 7 people on vacation with full luggage, towing, or something like that, I use the normal pressure of 34. The truck rides and stops better that way. So my first suggestion is to check your gas filler door to see what the “normal” setting should be. I’m assuming something in the 30’s, similar to mine. My second suggestion is once you have the pressures where you want them, use the menu in the dash to reset the desired pressure to the new setting and that should turn off any warnings. On my car “red” means over heated tire and “yellow” is tire pressure or sensor failure and is accompanied by a message explaining which. But I’m 5 years behind your model, so it could be this is something new.
This is driving me nuts all of the sudden my tire pressure sensor came on orange.
I'm riding at about 40/41 all the way around.
My tire package is the 285/40 R23 in front and 325/35 R23 in back
There are two PSI charges in gas can and in the door which I posted both.
Which one is it?
Second how come there is no way to check what the current factory TPM is set at? I looked and it only shows you your "current" TPM reading.
I over inflated even to about 44 all the way around and still all orange..and the orange tire sensor light is on.
I even lowered to about 37 and the front's showed "red" and the rear were still orange.
In the end I got frusrated and just set it to about 40/41 all the way around and reset the TPM. Very lame you can't just see what it "should be at" in the computer.
You should be able to set the reference values and restart the TPMS in the Service -> Tires page. Probably should do this with the cold pressures where you want them.
I also have the 23's and I've been running 43 front / 41 rear cold on the Mich Pilot Sport 4s (as if we have a choice) per RennTech's suggestion. My best guess 85% city 15% highway and virtually always light load and in 'sport suspension' mode. I have 33k miles on vehicle and this set over 20k miles on them! I think I still have another 5k+ easy. Tires are STILL quiet and wearing very evenly. I found when inflated to gas cap suggestion, steering felt mushy and more reverberation over bumps and cracks in road. I've always been very sensitive to tire pressure and stay on top of it.
My 2013 GL63 seemed to burn through tires and I resigned to buying new once a year around 7k miles (Continental Summer Performance) as they got very noisy as tread got low. I ran 40 all around per RennTech on the 21". Finally, when an all season performance tire came available I purchased (Mich Pilot Sport 4 All season performance). They seemed to last well over 20k miles and quiet quiet. I could feel the softer sidewall but I also felt my wallet heavier too!
Last edited by Trimmer2; Jun 18, 2024 at 09:33 PM.
hey Corsop2020 - I had similar issues with my GLS. Dealership confirmed the fuel cap door is the accurate tire pressure information. It’s crazy to me how the door sill and the fuel cap do not match but the fuel cap door is correct. The other issue is once you set the cold tire pressure to your desired psi - go into the menu and reset the reference psi which will eliminate the warning light. The other benefit of setting the cold psi and resetting the reference pressure, you will know for sure if the pressure dips below what you set as the cold psi / and is a concern. Hope this helps. Thanks - Troy
Originally Posted by Corsop2020
This is driving me nuts all of the sudden my tire pressure sensor came on orange.
I'm riding at about 40/41 all the way around.
My tire package is the 285/40 R23 in front and 325/35 R23 in back
There are two PSI charges in gas can and in the door which I posted both.
Which one is it?
Second how come there is no way to check what the current factory TPM is set at? I looked and it only shows you your "current" TPM reading.
I over inflated even to about 44 all the way around and still all orange..and the orange tire sensor light is on.
I even lowered to about 37 and the front's showed "red" and the rear were still orange.
In the end I got frusrated and just set it to about 40/41 all the way around and reset the TPM. Very lame you can't just see what it "should be at" in the computer.
For those with 23's how's the ride, and any 450's with them? I'm in the midst of ordering a '25 450 and would appreciate some real-world feedback.
I realize the 580's have ADS Plus as standard equipment, but I'm not sure what exactly the plus does? Then there's the 580's that also have ABC that's not available on the 450's which is supposed to really enhance comfort according to MB.
We 100% want the 23's, as the GLS is a large vehicle and think they along with the AMG pkg really look sharp, but we appreciate a nice ride when in comfort.
Fwiw we have a Grand Wagoneer Obsidian on 22's and it rides like a dream but have no idea how its suspension comps to the GLS's technically. We've also been unbale to find a GLS around here with 23's to test.
For those with 23's how's the ride, and any 450's with them? I'm in the midst of ordering a '25 450 and would appreciate some real-world feedback.
I realize the 580's have ADS Plus as standard equipment, but I'm not sure what exactly the plus does? Then there's the 580's that also have ABC that's not available on the 450's which is supposed to really enhance comfort according to MB.
We 100% want the 23's, as the GLS is a large vehicle and think they along with the AMG pkg really look sharp, but we appreciate a nice ride when in comfort.
Fwiw we have a Grand Wagoneer Obsidian on 22's and it rides like a dream but have no idea how its suspension comps to the GLS's technically. We've also been unbale to find a GLS around here with 23's to test.
I didn't ask in the other thread but will you ever travel to a cold climate w/your car where temps can drop below 40°F? It's just about impossible to find All-Season/Winter tires for 23" wheels!
You probably can't find a 23" to test because we are in a "chicken or the egg" phase: folks won't buy cars w/23" wheels because there aren't many AS/winter tire options and manufacturers won't start making them because the demand is not there!
I didn't ask in the other thread but will you ever travel to a cold climate w/your car where temps can drop below 40°F? It's just about impossible to find All-Season/Winter tires for 23" wheels!
You probably can't find a 23" to test because we are in a "chicken or the egg" phase: folks won't buy cars w/23" wheels because there aren't many AS/winter tire options and manufacturers won't start making them because the demand is not there!
Vehicle will be in N California the coldest it gets is a dusting of light snow up here for a week or two, but mostly temps of 40-100F over the seasons, are there any AS tires for this at all, if so which ones. Thx
Vehicle will be in N California the coldest it gets is a dusting of light snow up here for a week or two, but mostly temps of 40-100F over the seasons, are there any AS tires for this at all, if so which ones. Thx
Tirerack shows the following for the 23" wheels:
Zero OEM A/S tires (only summer, same ones that come w/the car).
hey there, i know its been a few month sincee this comment in the thread...
Recently became an owner of a 2025 GLS 450 AMG Package + Night Pacakge....
Runs the 23 in AMG Wheels....
285/40R23 Front Pirelli PZ4 MO
325/35R23 Rear Pirelli PZ4 MO
No Hydraulic body motion control
Just standar Air suspension with electric dampers
as honest as I can be... being the first MB ive owned.... used to own a 2020 BMW X6 xdrive 40i m sport with the air suspension and electric dampers...
I dont like the ride quality... i simply dont.... my x6 with 22 in wheels 275/35R22 + 315/30R22 absorbed the bumps better and transmmitted les vibrations in te cabin....
I dont like big wheels.... its more unsprung weight....
the ride is harsh and usually pirelli tires are harsh riding...
I hate how confusing Mbenz tire pressure recommendations are… in all their cars including my current GLS.
As an owner, most of the time, of Benz and BMW with overlapping ownership periods, I keep making these comparisons. BMW shows live recommended pressure that changes dynamically based on temperature and driving conditions. The recommended pressure in never a fixed value. It varies in summer vs winter, etc. I don’t understand why Benz is so confusing not only in terms of static values, but sometimes even in how the driver’s door tag vs the gasoline tank door may have different values. In all my previous BMWs, not only that the software has dynamic accurate recommended values, but also the driver’s door is specific to the car spec and it’s tire sizes, nothing that is model generic (and no other values on the gas tank door). I love benz, but man I always feel like their engineers have lower IQ or no common sense sometimes!
hey there, i know its been a few month sincee this comment in the thread...
Recently became an owner of a 2025 GLS 450 AMG Package + Night Pacakge....
Runs the 23 in AMG Wheels....
285/40R23 Front Pirelli PZ4 MO
325/35R23 Rear Pirelli PZ4 MO
No Hydraulic body motion control
Just standar Air suspension with electric dampers
as honest as I can be... being the first MB ive owned.... used to own a 2020 BMW X6 xdrive 40i m sport with the air suspension and electric dampers...
I dont like the ride quality... i simply dont.... my x6 with 22 in wheels 275/35R22 + 315/30R22 absorbed the bumps better and transmmitted les vibrations in te cabin....
I dont like big wheels.... its more unsprung weight....
the ride is harsh and usually pirelli tires are harsh riding...
Did you not test drive the car before ordering?!!!
I hate how confusing Mbenz tire pressure recommendations are… in all their cars including my current GLS.
As an owner, most of the time, of Benz and BMW with overlapping ownership periods, I keep making these comparisons. BMW shows live recommended pressure that changes dynamically based on temperature and driving conditions. The recommended pressure in never a fixed value. It varies in summer vs winter, etc. I don’t understand why Benz is so confusing not only in terms of static values, but sometimes even in how the driver’s door tag vs the gasoline tank door may have different values. In all my previous BMWs, not only that the software has dynamic accurate recommended values, but also the driver’s door is specific to the car spec and it’s tire sizes, nothing that is model generic (and no other values on the gas tank door). I love benz, but man I always feel like their engineers have lower IQ or no common sense sometimes!
1) BMW is the only car make I've had experience w/that offers dynamic tire pressure based on changing temperature so it's an outlier! Everyone else recommends a cold tire pressure for when the car hasn't been driven yet for the day!
2) Yes, Mercedes having the recommended tire pressure in both the door jamb and inside the fuel door is confusing as hell! I think only the fuel door sticker gives pressure for when the car is maxed out w/passenger and cargo (and not necessarily for comfort/fuel economy).
1) BMW is the only car make I've had experience w/that offers dynamic tire pressure based on changing temperature so it's an outlier! Everyone else recommends a cold tire pressure for when the car hasn't been driven yet for the day!
2) Yes, Mercedes having the recommended tire pressure in both the door jamb and inside the fuel door is confusing as hell! I think only the fuel door sticker gives pressure for when the car is maxed out w/passenger and cargo (and not necessarily for comfort/fuel economy).
Someone correct me if I am wrong, but I believe the door jamb pressures are the max pressures that are required by law to be shown on the door jamb of all vehicles, and the fuel door values are the MB recommended pressures. That was the consensus of the S550 forum.
2019 s-class coupe 2025 GLS 580 SUV2017 S-class cabriolet
TNS550 is correct. The tire pressures listed on the door jamb are required by NHTSA for a vehicle at max gross weight.
The tire pressures listed on the fuel filler cap are those provided by MB for a normal load/daily driven vehicle.
When the word vehicle is used it is specific to the car to which the label is attached, ie GLS 450, 580, 600, etc..
Someone correct me if I am wrong, but I believe the door jamb pressures are the max pressures that are required by law to be shown on the door jamb of all vehicles, and the fuel door values are the MB recommended pressures. That was the consensus of the S550 forum.
My understanding is that the fuel door takes into account options, added weight, wheel size and tire type. The door sill is generic for the chassis.
My understanding is that the fuel door takes into account options, added weight, wheel size and tire type. The door sill is generic for the chassis.
That's my understanding as well.
I think my fuel door statement is still valid based on "loaded options" for the intended purpose (note that I didn't say "minimum cold tire pressure")!
BMW shows live recommended pressure that changes dynamically based on temperature and driving conditions.
I was not aware of this. That is a nice feature. So if you're fully loaded but with tire pressure set at "normal" solo driving, does it give you a warning to increase the pressure to x value?
I was not aware of this. That is a nice feature. So if you're fully loaded but with tire pressure set at "normal" solo driving, does it give you a warning to increase the pressure to x value?
I believe the pressure recommendation is dependent only on ambient temperature for BMW. The car only cares about pressure on the tires regardless if it's 1 or 5 people!
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