Tire pressure sticker vs. warning display
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Newbie
Joined: Jun 2019
Posts: 4
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2019 E450
Tire pressure sticker vs. warning display
I've had my 2019 E450 for about 3 months. A few days ago a tire pressure warning popped up.
In the warning one tire is 40 psi and is marked OK.
The other 3 tires are 36, 37, and 39 psi and marked low.
The sticker in the fuel door states tire pressure should be 33 psi.
Tires are 245/40R19 on AMG wheels.
How do I find out what the correct pressure is?
Thanks in advance,
D.
In the warning one tire is 40 psi and is marked OK.
The other 3 tires are 36, 37, and 39 psi and marked low.
The sticker in the fuel door states tire pressure should be 33 psi.
Tires are 245/40R19 on AMG wheels.
How do I find out what the correct pressure is?
Thanks in advance,
D.
MBWorld Fanatic!
Joined: May 2018
Posts: 3,048
Likes: 905
From: Long Island, NY
2019 E 450, 2016 E350 4matic (retired), 2018 Ford Edge Sport, 2008 Porsche Boxster
Just my $.02:
I use the suggested air pressure on the fuel flap plus 10%.
So if the suggested pressure is 33 psi., when cold I keep the pressure at 36 psi. I find the ride the same as at 33 psi, but I get better fuel economy.
You do not state where you live: But here in the NYC area in the fall and winter the pressure will drop due to the cold and I have to "top off" the pressure and bring it back up to 36 psi.
I use the suggested air pressure on the fuel flap plus 10%.
So if the suggested pressure is 33 psi., when cold I keep the pressure at 36 psi. I find the ride the same as at 33 psi, but I get better fuel economy.
You do not state where you live: But here in the NYC area in the fall and winter the pressure will drop due to the cold and I have to "top off" the pressure and bring it back up to 36 psi.
Super Member
Joined: May 2018
Posts: 554
Likes: 63
From: Virginia
2019 E450 Cabriolet, 2020 GLS450
I've had my 2019 E450 for about 3 months. A few days ago a tire pressure warning popped up.
In the warning one tire is 40 psi and is marked OK.
The other 3 tires are 36, 37, and 39 psi and marked low.
The sticker in the fuel door states tire pressure should be 33 psi.
Tires are 245/40R19 on AMG wheels.
How do I find out what the correct pressure is?
Thanks in advance,
D.
In the warning one tire is 40 psi and is marked OK.
The other 3 tires are 36, 37, and 39 psi and marked low.
The sticker in the fuel door states tire pressure should be 33 psi.
Tires are 245/40R19 on AMG wheels.
How do I find out what the correct pressure is?
Thanks in advance,
D.
Senior Member
Joined: Jul 2018
Posts: 467
Likes: 91
From: Port St. Lucie, Fl
2026 GLE 450 (Black on Brown Saddle)
Years ago, while working at MB, the tire pressure indicator would be set at a tolerance of 4 psi variation "drop."To date, it appears to hold as well in triggering the alert. Here in South Florida, while temperatures seem to hover around the 60-90's, our RFT do drop in air pressure as well (an average of every 10 degrees drop). I keep ours at around 35 psi year round (cold pressure). 
