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Tire Pressure Discrepencies

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Old Jun 14, 2026 | 11:42 AM
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From: Phoenix east valley
2018 MB S560, 2018 Ford F150
Tire Pressure Discrepencies

I have just realized that two very different tire pressure specs are present on mt 2018 S560. One on the fuel door and one on the driver side door jamb. Which one should be adhered to?


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Old Jun 14, 2026 | 11:57 AM
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Originally Posted by Technoholic
I have just realized that two very different tire pressure specs are present on mt 2018 S560. One on the fuel door and one on the driver side door jamb. Which one should be adhered to?

Fuel door.
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Old Jun 14, 2026 | 02:43 PM
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222 S-65
Add four PSI for over 100MPH if only because it helps a lot with keeping tires alive when encountering potholes.
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Old Jun 14, 2026 | 03:15 PM
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Originally Posted by JohnLane
Add four PSI for over 100MPH if only because it helps a lot with keeping tires alive when encountering potholes.
This. It also helps with internal heat management at higher speeds.
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Old Jun 14, 2026 | 03:47 PM
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There is no mystery about the tire pressures on the two labels. The white label at the drivers door is the maximum pressure required for any operating condition. That is the 42 front, 43 rear on your car. The label on the fuel filler door has optional lower pressures for lower speed and lighter loading, as well as the max loading at max speed pressures. The two labels on my W222 S65 are the same. The white label is 49/51 which corresponds to the maximum load for up to 186mph as shown on the black label on the fuel filler door.



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Old Jun 14, 2026 | 07:26 PM
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2019 S560, 2015 Honda Civic Hybrid
Fuel door, not clear why two different labels, the one on the door jamb may be a regulatory requirement ?
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Old Jun 14, 2026 | 07:37 PM
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Originally Posted by Tom in Austin
Fuel door, not clear why two different labels, the one on the door jamb may be a regulatory requirement ?
Yup you got that right, it isn't the right values to be used but it is there for such reasons. Always use the fuel door one.
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Old Jun 15, 2026 | 08:45 PM
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I was thinking about this the other day. I run at 37 psi. Would love to drop down to 33 or so to soften up the run flats.

So what is everyone running on 19s. ?
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Old Jun 15, 2026 | 08:55 PM
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Originally Posted by tbilisi79
I was thinking about this the other day. I run at 37 psi. Would love to drop down to 33 or so to soften up the run flats.

So what is everyone running on 19s. ?
You want enough pressure to cushion and protect the wheels though when you hit a pothole.
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Old Jun 16, 2026 | 12:44 AM
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From: Uppsala
S600 w222
33 psi s600 w222
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Old Jun 17, 2026 | 12:22 AM
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I have not paid attention to the present models , but all of the Mercedes-Benz seem to have two stickers . I don't know whether or not is it related to the German over engineering stuff but I find it cool . I know I may sound weird lol

Anyway, fuel door stickers are what I follow but I never inflate the tires to the maximum level

Last edited by BenzV12; Jun 17, 2026 at 12:22 AM.
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Old Jun 17, 2026 | 04:43 AM
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Originally Posted by BenzV12
I have not paid attention to the present models , but all of the Mercedes-Benz seem to have two stickers . I don't know whether or not is it related to the German over engineering stuff but I find it cool . I know I may sound weird lol

Anyway, fuel door stickers are what I follow but I never inflate the tires to the maximum level
Only MB has a sticker among the Germans on the fuel door if I recalled correctly.
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