S550 4matic tire size help plz!
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From: Columbia, SC
2013 S550, 2002 S500, 1998 SL500
S550 4matic tire size help plz!
I have an S550 4matic. I noticed today that the front tire size is 255/35/20 and the rear tire size is 275/40/20. I thought that on AWD cars, the tires must be the same rotational diameter, and on mine, they're not. Is it different with benz?
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From: Columbia, SC
2013 S550, 2002 S500, 1998 SL500
I called Mercedes, and they're like, yeah that's normal. I know on my Lexus, they had to be the same rotational diameter. On my VR-4 they got to be the same rotational diameter.
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Depends on the weather
OEM - they are supposed to be the same size...technically, they should be 255/35/20 on all 4 corners. People run staggered sizes as long as they are within 3% and have no issues.
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From: Columbia, SC
2013 S550, 2002 S500, 1998 SL500
Well i'm no so much concerned about them being staggered. I'm concerned that they're aren't the same thickness, therefore they don't have the same rotational diameter. The width isn't an issue i'm aware, it's the sidewall i'm worried about.
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From: Columbia, SC
2013 S550, 2002 S500, 1998 SL500
Again, i'm not concerned about the width. Staggered is fine i'm aware of that. It's the rotational diameter i'm concerned about. 35's in the front and 40's in the rear. Not the width, but the diameter, since it's AWD.
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Thread Starter
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From: Columbia, SC
2013 S550, 2002 S500, 1998 SL500
What? No, lol. the rear are 275/40/20 and the front are 255/35/20. Not only can i tell from looking, but the size says it all.
What i'm asking is, since on Porsche, Mitsubishi, Audi, and Lexus, the same rotational diameter is required on AWD cars, is it the same on Mercedes?
Did someone **** up on my car before i got and put the wrong sized tires, or does mercedes drive train allow for different sizes.
What i'm asking is, since on Porsche, Mitsubishi, Audi, and Lexus, the same rotational diameter is required on AWD cars, is it the same on Mercedes?
Did someone **** up on my car before i got and put the wrong sized tires, or does mercedes drive train allow for different sizes.
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Thread Starter
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From: Columbia, SC
2013 S550, 2002 S500, 1998 SL500
Your first reply is referring to the fact that they are staggered. Mine are not only staggered, they are staggered with different diameters also.
So basically i'm fine with a different diameter tire on front and back?
Sorry, just really want to make sure, 'cause if i did that on my VR-4 i'd have tranny issues.
Preciate you taking the time and responding.
So basically i'm fine with a different diameter tire on front and back?
Sorry, just really want to make sure, 'cause if i did that on my VR-4 i'd have tranny issues.
Preciate you taking the time and responding.
Thread Starter
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From: Columbia, SC
2013 S550, 2002 S500, 1998 SL500
Let me rephrase the questions. If i was running NON STAGGERED tires, 255/35/20 in the front, and 255/40/20 in the rear, would the difference in circumference matter on a benz?
Thanks anyway.
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From: Palm Beach Gardens, Florida
2008 S550, 2006 911, 2006 M5, 2005 F-150 King Ranch
Go to a tire calculator site...
such as
http://tire-size-conversion.com/tire-size-calculator/
it shows it is a 5.7% difference which is way too much
these are not stock rims that came from factory and the previous owner was unaware of this
http://tire-size-conversion.com/tire-size-calculator/
it shows it is a 5.7% difference which is way too much
these are not stock rims that came from factory and the previous owner was unaware of this
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From: Maryland
Depends on the weather
read the rest of what i said...it doesnt matter if they are staggered or not, it's about the tire size. All you need to do is look at a tire size calculator...
"as long as they are within 3% and have no issues."
"as long as they are within 3% and have no issues."
Thread Starter
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From: Columbia, SC
2013 S550, 2002 S500, 1998 SL500
Well the tires are new. So i'm going to have to change either the front, or the back. I'd prefer having a quieter ride. I'm not ripping corners with this thing anyway so i'm leaning for the 40's all around. So, should i go with 35's all around, or 40's? what do ya'll think?
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From: Here
W221/S550
275 = width (in millimeters)
35 = 35% of the section width of your tire is the sidewall height measurement.
So a 275/35 can have a taller sidewall than a 195/40.
So you SHOULD be concerned with the width as the other number is based on the width.
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From: Palm Beach Gardens, Florida
2008 S550, 2006 911, 2006 M5, 2005 F-150 King Ranch
another problem with current setup...
If your wheels are staggered, when mounting all 4 same size tires will cause rear tires to have stretched look.
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From: Columbia, SC
2013 S550, 2002 S500, 1998 SL500
Do you realize the height (sidewall) of the tire depends on the width right?
275 = width (in millimeters)
35 = 35% of the section width of your tire is the sidewall height measurement.
So a 275/35 can have a taller sidewall than a 195/40.
So you SHOULD be concerned with the width as the other number is based on the width.
275 = width (in millimeters)
35 = 35% of the section width of your tire is the sidewall height measurement.
So a 275/35 can have a taller sidewall than a 195/40.
So you SHOULD be concerned with the width as the other number is based on the width.
What i meant was that i'm aware having a staggered setup isn't harmful to AWD cars, so i'm not concerned that they have different widths. I was concerned that they have different rotational diameter.
So no, i'm not concerned at all that the back tires are wider than the front.
