C450 tire pressure
Thread Starter
Senior Member
Joined: Jan 2007
Posts: 488
Likes: 7
From: HELL A
GLC 2026
C450 tire pressure
I was wondering why it's required to have the front tires at 42psi and the back at 32psi. I have the 18" tires. My other cars always had the back tires at a higher psi. Is it because of 4matic and negative camber?
MBWorld Fanatic!
Joined: Sep 2014
Posts: 1,822
Likes: 33
From: Whitefield, NH
2015 C300 Sport: Palladium, Premium, Multimedia, Leather, BLIS
Curious .... where are those numbers published? What do the stickers on the door sill (max) and the fuel filler door (normal) say?
Thread Starter
Senior Member
Joined: Jan 2007
Posts: 488
Likes: 7
From: HELL A
GLC 2026
Trending Topics
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
Super Member
Joined: Jun 2015
Posts: 630
Likes: 188
C450, GLS 63 and a few other things
Aren't the 18's the all seasons? If so, I believe they are M&S rated, which I'm guessing is the bottom pressures. Can't confirm any of this, mine is still at the dealer waiting for us to dig out from the snow.
Super Member
Joined: May 2015
Posts: 692
Likes: 24
From: Cambridge, MA
2015 C300 Sport 4MATIC
Super Member
Joined: May 2015
Posts: 692
Likes: 24
From: Cambridge, MA
2015 C300 Sport 4MATIC
I thought you were implying that even though the 18 inch wheel option are the same on the C300 and the C450, your recommended pressures are different than mine because you have a C450.
Banned
Joined: Jan 2016
Posts: 376
Likes: 4
2016 c450
I still don't know what you mean. I have implied nothing. What I have expressed is that my c450 has the pressures, from delivery, reflected on the gas tank cover and I'm assured those are the specifications. As far as I'm concerned, it's a mystery as to why the c450 has these specifications.
Thread Starter
Senior Member
Joined: Jan 2007
Posts: 488
Likes: 7
From: HELL A
GLC 2026
Super Member
Joined: May 2015
Posts: 692
Likes: 24
From: Cambridge, MA
2015 C300 Sport 4MATIC
Thread Starter
Senior Member
Joined: Jan 2007
Posts: 488
Likes: 7
From: HELL A
GLC 2026
This is from a C63 fuel door. Even their pressure requirement for the 18" isn't that high, unless you have a full load and plan to go up to 180mph. The pressure difference between front and rear is also not as much as in the C450 
