Tire Pressure Discrepancy
07-01-2024, 12:43 PM
#1
Newbie
Thread Starter
Join Date: Apr 2017
Location: Depoe Bay, OR
Posts: 14
Received 0 Likes
on
0 Posts
2023-E350 4Matic
Tire Pressure Discrepancy
2023 E350 with 245/40 R19 (Extra Load) front and rear. Tire sticker on driver's door indicates pressure of F-39/R-46 psi. Sticker on Fuel Fill Cap indicates F-33/R-34. Which should I follow?
The following users liked this post:
JTK44 (07-01-2024)
07-01-2024, 03:14 PM
#3
Out Of Control!!
Join Date: Dec 2019
Location: Yours to Discover
Posts: 13,749
Received 2,619 Likes
on
2,227 Posts
PFL205.064 with M276.823 (Oil pump solenoid defeated)
07-01-2024, 04:31 PM
#4
MBWorld Fanatic!
Join Date: Apr 2006
Location: Dallas-Ft.Worth,TX
Posts: 4,647
Received 1,753 Likes
on
1,123 Posts
2016 E350 Sport
Neither... Follow what is molded on the tire itself. Max pressure minus 10-15%
07-01-2024, 06:56 PM
#6
MBWorld Fanatic!
Join Date: May 2018
Location: Long Island, NY
Posts: 2,079
Received 594 Likes
on
450 Posts
2019 E 450, 2016 E350 4matic (retired), 2018 Ford Edge Sport, 2008 Porsche Boxster
With 19" tires, the pressure you suggest, the ride will be intolerable.
I go with the the fuel cap pressures.
For my own preference, I add 2 PSI to the fuel cap. With my 18" wheels, normal load, per the fuel flap that is 33 PSI + 2 = 35 PSI.
07-02-2024, 05:45 AM
#7
MBWorld Fanatic!
Max on tire is to prevent blowing things up and mainly what the max tire load capacity numbers are based on.
max pressure wears tire out in center and reduces handling and braking due to reduce contact area with road.
Manufacturer tire pressure is best place to start and adjust from there but do be careful if you haul near max load and do not have pressure they recommend or more.
max pressure wears tire out in center and reduces handling and braking due to reduce contact area with road.
Manufacturer tire pressure is best place to start and adjust from there but do be careful if you haul near max load and do not have pressure they recommend or more.
