Correct tire pressure
Administrator
Joined: Sep 2002
Posts: 15,769
Likes: 37
From: www.Traben-Trarbach.de
MPG+ ROLFCOPTER
1) Its on a sticky on the car
2) It might even be addressed in the manual
3) Its been covered numerous times on MBW
Please RTFM, STFF, etc. I bet it'll be faster than waiting on an answer to be posted.
2) It might even be addressed in the manual
3) Its been covered numerous times on MBW
Please RTFM, STFF, etc. I bet it'll be faster than waiting on an answer to be posted.
Senior Member
Joined: Jan 2008
Posts: 459
Likes: 6
From: N.J USA
2010 E550.. Gone but never forgotton - E63 AMG..
Thats a good question. I recently checked mine and found that the fronts were 29 and rears 33. I have no idea whether this is right or wrong but its always been this way, i assume. The TPMS has never come on..
Super Member
Joined: Feb 2010
Posts: 640
Likes: 6
2015 GL450
My understanding is that the one to follow is the one in the driver's side door jam (correct word?). There, mine lists the correct tire sizes for the car and indicates 36/39 for my E550 4matic. The filler door, in contrast, does not list any tire size and indicates 33/35. My impression and something I believe I was told, which might be incorrect, is that the one in the driver's side door jam is specific to the options on the car, including not only the tire size but also options that make the car weigh more (thus increasing the load).
MBWorld Fanatic!
Joined: Jul 2009
Posts: 1,914
Likes: 261
From: Ontario,Canada
...24 GLE53
You may be right. I don't know if a pound or two makes a lot of difference. In my case the filler door recommendations will have to do.
Last edited by petee1997; Aug 13, 2010 at 10:52 AM.
Senior Member
Joined: Mar 2010
Posts: 290
Likes: 48
From: Florida
2013 ML350, 2019 S560
I run my E550 Sport package (RWD) setup at maximum pressure recs on fuel filler door. Front 33 and rear 42.
With this, steering response is better than the normal load pressures. Also, tire wear seems less, especially edge of front tires.
With this, steering response is better than the normal load pressures. Also, tire wear seems less, especially edge of front tires.
Trending Topics
Junior Member
Joined: Jul 2009
Posts: 70
Likes: 0
From: San Jose, California
2013 Q7 S-Line, 2010 E350 Sport Sedan P1, 2005 Camry, 2008 Piaggio MP3 250, Sold: 02 C230, 90 Miata
Steel.Grey.MB, Obviously, yours are staggered, and you still have the MB factory installed Continental tires. So MB definitely figured out the best numbers for their car and these specific tires combination. I would pay more attention to the car manufacturer's recommendation (gas lid or door or manual) more than the tire manufacturer's recommendation. There is no simple answer for this as this involves several factors beyond load. There is always allowed tolerance by the car manufacturer also. I'm not sure of the details of the tolerance, but I personally use +/- 2 psi.
MB World Stories
The Best of Mercedes & AMG
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
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Member
Joined: Jun 2004
Posts: 118
Likes: 0
2010 E350, 2007 S550 - SOLD, 2007 ML350
Steel.Grey.MB, Obviously, yours are staggered, and you still have the MB factory installed Continental tires. So MB definitely figured out the best numbers for their car and these specific tires combination. I would pay more attention to the car manufacturer's recommendation (gas lid or door or manual) more than the tire manufacturer's recommendation. There is no simple answer for this as this involves several factors beyond load. There is always allowed tolerance by the car manufacturer also. I'm not sure of the details of the tolerance, but I personally use +/- 2 psi.
MBWorld Fanatic!
Joined: Nov 2009
Posts: 2,616
Likes: 160
From: Southeastern USA
2010 E350 Luxury Sedan, Engine 272 (V6)
Who knows?
I have an E350 Luxury sedan and have asked MBUSA and dealer about correct TP. MBUSA-go by "B" pillar label or dealer. "B" pillar says 33F/42R. Operator's Manual says use "B" Pillar, but a few paragraphs later states that this is for maximum load. Also says use label on fuel filler door. That label says Normal-30F/35R and Maximum load-33F/42R.
Had tires rotated yesterday and spoke to technician about it. He says they use the lower number on fuel filler door unless it is obvious car frequently carries more than one or two people, i.e. 2 baby seats in back.
When I got the car it was 33/42 and technician then said that was correct.
Yesterday, different technicial lowered it to 30/35 and said that was correct. Ironically I asked because big red "Check Tire Pressure" screen came up and warning light for TP when I drove off. Supposedly he had reset the TPMS, but car needs to be driven for a mile also.
Guess the only real answer is to measure tread wear frequently and then adjust accordingly. Only got 4,700 miles on mine and tread wear appeared to be about even at 33/42.
Haven't had chance to do a good study, but appears lower TP may be costing me a mile to the gallon. May ride somewhat softer, but not really sure.
Definitely strange. Does anyone know the real answer?
Had tires rotated yesterday and spoke to technician about it. He says they use the lower number on fuel filler door unless it is obvious car frequently carries more than one or two people, i.e. 2 baby seats in back.
When I got the car it was 33/42 and technician then said that was correct.
Yesterday, different technicial lowered it to 30/35 and said that was correct. Ironically I asked because big red "Check Tire Pressure" screen came up and warning light for TP when I drove off. Supposedly he had reset the TPMS, but car needs to be driven for a mile also.
Guess the only real answer is to measure tread wear frequently and then adjust accordingly. Only got 4,700 miles on mine and tread wear appeared to be about even at 33/42.
Haven't had chance to do a good study, but appears lower TP may be costing me a mile to the gallon. May ride somewhat softer, but not really sure.
Definitely strange. Does anyone know the real answer?
Out Of Control!!
Joined: Jun 2008
Posts: 10,557
Likes: 24
From: Earth
Porsche Macan S SportDesign / Ex M-B's: 11 & 10 & 06 E350's, 02 S500
My TPMS seems to be kind of all over the place. I played with the pressure on mine as I noticed the fronts were uneven from each other.
Right now, after lowering some, it was at 32-33 Front, and 33-35 rear during long Highway driving. So I figure it'll be a couple lbs. less at start-up.
I really don't see how 42 lbs can be a good thing, seems way way overboard.
I will say, I kind of got tired of how jarring the car took some rough patches and pot-holes. I like the AMG look and lowered stance, but I don't buy an E-Class for a sporty/bumpy ride, so I found that lowering the front driver side tire 1-3 lbs kind of smoothed things out a bit.
Right now, after lowering some, it was at 32-33 Front, and 33-35 rear during long Highway driving. So I figure it'll be a couple lbs. less at start-up.
I really don't see how 42 lbs can be a good thing, seems way way overboard.
I will say, I kind of got tired of how jarring the car took some rough patches and pot-holes. I like the AMG look and lowered stance, but I don't buy an E-Class for a sporty/bumpy ride, so I found that lowering the front driver side tire 1-3 lbs kind of smoothed things out a bit.
MBWorld Fanatic!
Joined: Nov 2009
Posts: 2,616
Likes: 160
From: Southeastern USA
2010 E350 Luxury Sedan, Engine 272 (V6)
Confusing isn't it?
You can see my earlier post, but basically the correct pressure is the one on the fuel filler door label. On my E350 Luxury with same size tires front and rear, there is a maximum and a normal load.
The "B" pillar or driver's door label is the one for maximum load per the Operator's Manual. In my manual, it says use that pressure, but then three paragrphs later, it says that is for maximum load.
On my car it is 30F/35R normal; 33F/45R for maiximum. I run them about 2 or 3 lbs. higher.
On recent trip got 31.8 MPG at 65 and 70 MPH with A/C on while on interstate. TP was 33/37 per my gauge. Car TPMS indicator showed 31/35 when first started.
The "B" pillar or driver's door label is the one for maximum load per the Operator's Manual. In my manual, it says use that pressure, but then three paragrphs later, it says that is for maximum load.
On my car it is 30F/35R normal; 33F/45R for maiximum. I run them about 2 or 3 lbs. higher.
On recent trip got 31.8 MPG at 65 and 70 MPH with A/C on while on interstate. TP was 33/37 per my gauge. Car TPMS indicator showed 31/35 when first started.
Newbie
Joined: Jul 2012
Posts: 1
Likes: 0
E350 Coupe (2012)
Appropriate Tire Pressure (PSI) for E350 Coupe (2012)
I recently purchased an E350 Coupe (2012) with Luxury Suspension (17'' wheels - continentals - factory standard)- love the car; however, I am not sure what the correct PSI amount should be for each tire?
Multiple dealerships have told me different amounts - needless to say I am confused. I checked the gas cap, which indicated that it should be 33 PSI all-around; however, one dealership told me that the front tires should be inflated to 32 psi, with the rear tires at 35 psi.
I appreciate any guidance the forum could provide.
Multiple dealerships have told me different amounts - needless to say I am confused. I checked the gas cap, which indicated that it should be 33 PSI all-around; however, one dealership told me that the front tires should be inflated to 32 psi, with the rear tires at 35 psi.
I appreciate any guidance the forum could provide.
Super Member
Joined: Apr 2011
Posts: 639
Likes: 14
From: Suburban Phila., PA
2012 E350 Coupe
I recently purchased an E350 Coupe (2012) with Luxury Suspension (17'' wheels - continentals - factory standard)- love the car; however, I am not sure what the correct PSI amount should be for each tire?
Multiple dealerships have told me different amounts - needless to say I am confused. I checked the gas cap, which indicated that it should be 33 PSI all-around; however, one dealership told me that the front tires should be inflated to 32 psi, with the rear tires at 35 psi.
I appreciate any guidance the forum could provide.
Multiple dealerships have told me different amounts - needless to say I am confused. I checked the gas cap, which indicated that it should be 33 PSI all-around; however, one dealership told me that the front tires should be inflated to 32 psi, with the rear tires at 35 psi.
I appreciate any guidance the forum could provide.
The Tire Pressure Monitor in your vehicle's dash display only functions after a few minutes driving. So, if you subtract three pounds or so from the TPMS reading after several minutes of driving, you'll arrive at a rough approximation of the cold tire pressure and can adjust pressures as needed.
Or take tire gauge in hand and directly measure the pressures before you've driven the car.
The one gripe I have with my dealer is their insistance on "topping off" the tires at the highest possible pressures every time I go in for state inspection. These are the pressures posted on the frame inside the driver's door. They are for maximum possible loads being carried; totally unnecessary for normal loads and driving conditions.
I have the Appearance Package, including the 18" UHP tires and wheels and stiffer so-called Sport suspension. If I operate the vehicle with these tires inflated to the max, it is the equivalent of driving on a concrete suspension instead of springs.
My car handles and drives perfectly well on the 33psi all around recommended by Mercedes in the gas filler door placard.
Good luck and congratulations on your new car.
Last edited by BenzMan369; Jul 26, 2012 at 02:55 PM.
MBWorld Fanatic!
Joined: Nov 2009
Posts: 2,616
Likes: 160
From: Southeastern USA
2010 E350 Luxury Sedan, Engine 272 (V6)
You can see my earlier response to this question above. BUT, the Operator's Manual also states the higher pressure is for driving at speeds in excess of 100 MPH, but manual was printed in 2009, so yours may be different.
I check my tires with a gauge about every two months in morning before driving and before sun hits them. Keep them at about 2# above the lower recommendation.
If you add or remove air, be sure to reset the TPMS.
To some degree, it's a personal thing. The higher TP will probably increase MPG, but provide for harsher ride. Reverse with the lower TP.
Regardless, the TP on tire is the maximum for that tire, not for that tire on your car.
I check my tires with a gauge about every two months in morning before driving and before sun hits them. Keep them at about 2# above the lower recommendation.
If you add or remove air, be sure to reset the TPMS.
To some degree, it's a personal thing. The higher TP will probably increase MPG, but provide for harsher ride. Reverse with the lower TP.
Regardless, the TP on tire is the maximum for that tire, not for that tire on your car.
