PutNavid

Hey everyone, im looking into purchasing some new wheels for my e500 4matic. I found a set I really like but the problem is they're staggered. 19x8 in front and 19x9 in the back. I found two sizes that are super close together.

For the front 235/35/19
Tire diameter is 25.476 in
Circumference 80.035 in

For the back 275/30/19
Diameter 25.496 in
Circumference 80.098 in

Would this setup work without damaging anything or should I move on and find other wheels. Even if it would work im not sure how a 275 tire would look on a 9 inch wheel. Any advice is appreciated!

AMGAffalterbach

275 would be fine on a 9 inch wheel, and the rolling diameter is definitely within 1/10th of an inch of each other. 19x8 in the front will be fine and you should have no issues in the back even on 19s, I obviously can't guarantee anything but I think you're good homie.

The only thing to consider is if you do a lot of canyon (mountain?) runs around here then you will increase understeer with a staggered setup since you have less grip in the front, but a 235 is still enough grip that those effects would be minimal.

2.7Tallroader

Normally when you go on TireRack, they have staggered sets where they "believe" would not be detrimental to the car. I did this when i purchased a staggered set for an R129 as the ASR of that vintage car was very picky but with their staggered set, i did not have a problem.

AMGAffalterbach

Not sure if they will say it's detrimental because of 4-Matic or not, but I guess that's another good tool to check.

PutNavid

Well judging by the fact that mercedes puts staggered wheels on the c300 4matic sport relieves my worries.
They use 225/45/17 in front
Diameter: 24.972
Circumference: 78.452
And 245/40/17 in the back
Diameter: 24.717
Circumference: 77.651

My numbers are much closer than those so I should be fine!

oledoc2u

I run staggered on my e-350, but I run the same size tire. You can't tell the difference, the rears even look wider, but are not. Good luck

W211_350WagoN

Hey did you ever do it ??? I'm looking at 245 35 19 & 285 30 19 Michelin a/s 3 are the only all season tire with the same rpm and overall diameter. I see the 235-275 combo gives me more options with the all seasons for my 350 4matic wagon. Please update me and send some pictures in comfort ride setting as I only have rear self leveling and can't lower the front of the wagon easily.
A BIG THANKS IN ADVANCE !!!

oledoc2u

You have to run the same size like all 245/35/18. Can't change up # s. The stagger makes the rears appear larger.

W211_350WagoN

Yes but if I'd run the same size on 2 different size wheels the overall diameter will not match.... 8.5 /9.5

kajtek1

It will if you do your homework.
That is what manufacturers list rpm for.

cMazara

[QUOTE=kajtek1;6625392]Oh dear lord. If you mean the rpm on the tach. It's revolutions on the engine when a 4-stroke cycle is completed.

Diameter is the same. 8.5/9.5 is the width. If you mean the revolutions of the wheel, it'll be the same too, same diameter same distance to make one perimeter length in circle, Perse same diameter.

W211_350WagoN

Lol I'm lost...
I checked rpm' son tire rack and it shows 245/35/19 & 285/30/19 @807 rpm's only with the Michelin A/S 3.
So please explain how the same size tire on a different width wheel would be the same overall diameter/RPMs per mile?
[QUOTE=cMazara;6625428]

cMazara

[QUOTE=W211_350WagoN;6625444]Lol I'm lost...
I checked rpm' son tire rack and it shows 245/35/19 & 285/30/19 @807 rpm's only with the Michelin A/S 3.
So please explain how the same size tire on a different width wheel would be the same overall diameter/RPMs per mile?
Ah got it. That's rotation per mile. That'll be 807 tire rotations every mile.

Have to recognize I messed up, in a sense. Was talking only bout the wheel diameter and width.. For the tire size being different there's calculators that give the correct profile in this case.

kajtek1

http://www.tirerack.com/tires/tirete....jsp?techid=18
Tires are build with rubber and rubber is flexible thing.
Not only you have nominal size on standing tire, but that will change under the load, than at speed centrifugal forces will change it as well.
If you pay attention, rpm of the tires is given at certain speed as it is not constant.
Putting the same tire on different width rims will change it profile, but radial tires have a "belt" of fabric that holds the diameter pretty firm, so difference will be negligible.
On diagonal tire they will be different, but who is using those?

W211_350WagoN

So you suggest I go with 245 all around or the 285 30 at rear?

jametarne

I obviously can't guarantee anything but I think you're good homie.

kajtek1

I count that just in today's replies we told about RPMs 5 times.
Still no clue?
Nominal sizes are just for initial choices and then you have to pair the tires per rpm.

W211_350WagoN

That's what I was leaning towards also. But the whole tire staying the same size kind of had me thinking for a sec. Either way I should be doing the staggered and reporting back in on various threads including this one as I put 40-50k miles a year and service most of the car myself.
It's always great speaking with a few people in this community when I need a sec and third opinion.
Thanks guys!!

cMazara

Doesn't staggered setup mess up with the awd system?

kajtek1

The car has no sensors to "see" the wheel width so the only thing that can make a difference is different rpm.
My hands are dropping down on the subject.

cMazara

Yeah but the car calculates the output needed on every wheel thinking all four corners have the same setup.

imo, If it's just a daily driver and the overall diameter is +o- the same, Then it's good. Use a tire/wheel calculator and compare each front and rear setup so you can have an idea.

kajtek1

Computer doesn't calculate output. This is all mechanical and the 35/65% or so split is done by planetary gears. No sensors for computers there.
MB never gave precise data, but owners experience is that you can have 3% rpm difference between the wheels just fine.
Once you go to 5% the first thing to go is Cruise Control.
Than ESP and traction light will start discotheque, while the brakes will get workout.
Common understanding is that 4M is more sensitive to whreels rpm differences than RWD, but I think this is just myth.