2012 CLS63 tire pressure question
Thread Starter
Newbie
Joined: Aug 2012
Posts: 2
Likes: 0
From: Orange County, CA
2012 CLS63 AMG; 2004 Porsche 91 Anniversary edition; 2007 Mercedes Gl 450
2012 CLS63 tire pressure question
I have a 2012 CLS 63 with 11,500 miles and the front tires are shot because of excessive wear on the outsides. The tread on the centers is good. One of the rears is also wearing on the inside. This is my 3rd CLS AMG, 1 CLS55 and 2 CLS63s and I averaged about 20,000 miles on a set of tires, various brands, on the previous 2 cars.
The dealer can’t offer any explanation. The wheels have been aligned and balanced on a Hunter road force machine. Here is my question. The tire pressure chart on the inside of the gas filler flap recommends 39 lbs all around for driving with 4 passengers and luggage at speeds up to 155 mph, and 51 lbs all around with 4 passengers and luggage up to 186 mph, BUT the sticker on the pillar by the driver’s door says 51 lbs all around, period. Which is correct?
I have been keeping the pressure at 41 lbs faithfully since I got the car. The dealer says 51 lbs is ridiculous but now I am wondering.......
I need to replace the Conti Sport Contact 5Ps pretty soon and would like to figure out the tire pressure question before I get new tires. I live in SoCal where it is dry most of the time and am thinking of getting either Bridgestone Potenza S-04 Pole Positions or Michelin Super Sports but would appreciate any other suggestions.
The dealer can’t offer any explanation. The wheels have been aligned and balanced on a Hunter road force machine. Here is my question. The tire pressure chart on the inside of the gas filler flap recommends 39 lbs all around for driving with 4 passengers and luggage at speeds up to 155 mph, and 51 lbs all around with 4 passengers and luggage up to 186 mph, BUT the sticker on the pillar by the driver’s door says 51 lbs all around, period. Which is correct?
I have been keeping the pressure at 41 lbs faithfully since I got the car. The dealer says 51 lbs is ridiculous but now I am wondering.......
I need to replace the Conti Sport Contact 5Ps pretty soon and would like to figure out the tire pressure question before I get new tires. I live in SoCal where it is dry most of the time and am thinking of getting either Bridgestone Potenza S-04 Pole Positions or Michelin Super Sports but would appreciate any other suggestions.
Junior Member
Joined: Jun 2011
Posts: 31
Likes: 0
2012 CLS63 AMG
I found 39lbs is too high. I have it at 35lbs so the car is more stable. 41lbs is too bouncy and 51lbs is just ridiculous.
As for tires I would op for Super Sports because it grips!! It wears fast though, generally about 15,000 miles.
As for tires I would op for Super Sports because it grips!! It wears fast though, generally about 15,000 miles.
Administrator
Joined: Nov 2001
Posts: 12,263
Likes: 901
From: THE Orange County, California
2024 C8 Z06- 2025 BMW CS- 2022 Porsche 992 GTS
I have a 2012 CLS 63 with 11,500 miles and the front tires are shot because of excessive wear on the outsides. The tread on the centers is good. One of the rears is also wearing on the inside. This is my 3rd CLS AMG, 1 CLS55 and 2 CLS63s and I averaged about 20,000 miles on a set of tires, various brands, on the previous 2 cars.
The dealer can’t offer any explanation. The wheels have been aligned and balanced on a Hunter road force machine. Here is my question. The tire pressure chart on the inside of the gas filler flap recommends 39 lbs all around for driving with 4 passengers and luggage at speeds up to 155 mph, and 51 lbs all around with 4 passengers and luggage up to 186 mph, BUT the sticker on the pillar by the driver’s door says 51 lbs all around, period. Which is correct?
I have been keeping the pressure at 41 lbs faithfully since I got the car. The dealer says 51 lbs is ridiculous but now I am wondering.......
I need to replace the Conti Sport Contact 5Ps pretty soon and would like to figure out the tire pressure question before I get new tires. I live in SoCal where it is dry most of the time and am thinking of getting either Bridgestone Potenza S-04 Pole Positions or Michelin Super Sports but would appreciate any other suggestions.
The dealer can’t offer any explanation. The wheels have been aligned and balanced on a Hunter road force machine. Here is my question. The tire pressure chart on the inside of the gas filler flap recommends 39 lbs all around for driving with 4 passengers and luggage at speeds up to 155 mph, and 51 lbs all around with 4 passengers and luggage up to 186 mph, BUT the sticker on the pillar by the driver’s door says 51 lbs all around, period. Which is correct?
I have been keeping the pressure at 41 lbs faithfully since I got the car. The dealer says 51 lbs is ridiculous but now I am wondering.......
I need to replace the Conti Sport Contact 5Ps pretty soon and would like to figure out the tire pressure question before I get new tires. I live in SoCal where it is dry most of the time and am thinking of getting either Bridgestone Potenza S-04 Pole Positions or Michelin Super Sports but would appreciate any other suggestions.
I think we have seen 3 or 4 posts about the C218 and TP's... on stock 19's I think you should run 36-38 cold psi... I did this and got good results.
The 51 psi number is for actually going over 150+ mph with all the weight in the car- which will never happen I hope.
As for your wear, if your outsides and insides are worn but not centers that is the result of lower air pressure. The rears are going to wear on the inside due to factory camber and so much tq pushing the car from digs and from rolls.
Run 37 psi cold.
Thread Starter
Newbie
Joined: Aug 2012
Posts: 2
Likes: 0
From: Orange County, CA
2012 CLS63 AMG; 2004 Porsche 91 Anniversary edition; 2007 Mercedes Gl 450
Thank you both for your replies. Vic, I agree that wear on the outsides would usually indicate low air pressure but I have been fanatical about keeping the pressure at 41 lbs since the car was new. So if 41lbs is too low, then your suggestion of 37 lbs wouln't work. I will continue to experiment with these tires until I replace them but I am still at a loss here.
Thanks, Chuck
Thanks, Chuck
Administrator
Joined: Nov 2001
Posts: 12,263
Likes: 901
From: THE Orange County, California
2024 C8 Z06- 2025 BMW CS- 2022 Porsche 992 GTS
Thank you both for your replies. Vic, I agree that wear on the outsides would usually indicate low air pressure but I have been fanatical about keeping the pressure at 41 lbs since the car was new. So if 41lbs is too low, then your suggestion of 37 lbs wouln't work. I will continue to experiment with these tires until I replace them but I am still at a loss here.
Thanks, Chuck
Thanks, Chuck
Member
Joined: Feb 2012
Posts: 186
Likes: 1
From: Dallas, TX
CLS63 AMG
I think we have seen 3 or 4 posts about the C218 and TP's... on stock 19's I think you should run 36-38 cold psi... I did this and got good results.
The 51 psi number is for actually going over 150+ mph with all the weight in the car- which will never happen I hope.
As for your wear, if your outsides and insides are worn but not centers that is the result of lower air pressure. The rears are going to wear on the inside due to factory camber and so much tq pushing the car from digs and from rolls.
Run 37 psi cold.
The 51 psi number is for actually going over 150+ mph with all the weight in the car- which will never happen I hope.
As for your wear, if your outsides and insides are worn but not centers that is the result of lower air pressure. The rears are going to wear on the inside due to factory camber and so much tq pushing the car from digs and from rolls.
Run 37 psi cold.
Trending Topics
Member
Joined: Feb 2012
Posts: 186
Likes: 1
From: Dallas, TX
CLS63 AMG
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
Administrator
Joined: Nov 2001
Posts: 12,263
Likes: 901
From: THE Orange County, California
2024 C8 Z06- 2025 BMW CS- 2022 Porsche 992 GTS
Wow thats way too high---- you have to be feeling the pavement underneath you and turn in's at higher speeds will not be optimal.
MBWorld God!
Joined: Jul 2010
Posts: 31,277
Likes: 3,916
From: on my way
2012 CLS63
guess I'm just used to it...I'll see how they feel with lower pressure..
but those numbers above are warm tire numbers, so I guess they're a few less cold...
I have also been averaging 20-22 mpg, think the higher pressure relates?
gotta love this forum....
MBWorld Fanatic!
Joined: Nov 2010
Posts: 3,462
Likes: 54
FF. W212 E63 M156 non-pano 18" P2 ParkT NightV (gone but will be missed).
Senior Member
Joined: Aug 2008
Posts: 355
Likes: 1
From: Chicagoland
12 CLS63
hmmmm....it feels okay to me, if it's bad for wear I'd lower them....
guess I'm just used to it...I'll see how they feel with lower pressure..
but those numbers above are warm tire numbers, so I guess they're a few less cold...
I have also been averaging 20-22 mpg, think the higher pressure relates?
gotta love this forum....
guess I'm just used to it...I'll see how they feel with lower pressure..
but those numbers above are warm tire numbers, so I guess they're a few less cold...
I have also been averaging 20-22 mpg, think the higher pressure relates?
gotta love this forum....
Administrator
Joined: Nov 2001
Posts: 12,263
Likes: 901
From: THE Orange County, California
2024 C8 Z06- 2025 BMW CS- 2022 Porsche 992 GTS
hmmmm....it feels okay to me, if it's bad for wear I'd lower them....
guess I'm just used to it...I'll see how they feel with lower pressure..
but those numbers above are warm tire numbers, so I guess they're a few less cold...
I have also been averaging 20-22 mpg, think the higher pressure relates?
gotta love this forum....
guess I'm just used to it...I'll see how they feel with lower pressure..
but those numbers above are warm tire numbers, so I guess they're a few less cold...
I have also been averaging 20-22 mpg, think the higher pressure relates?
gotta love this forum....
