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Discussion Starter #1
Hello,

In the new W164, I can choose 2 tire sizes:

a) 8J * 18 ET60 255/55 R18

b) 8.5J * 19 ET58 255/50 R19

I wanted something wider like the 275 that the W163 has as an option but this one don't have.

Will this ones work?
8,5x18 und 9,5x18, ET 35, LK 5/112

Why is the ET so different?

Best Regards,

Ruben.
 

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rubensans - 4/24/2005 1:11 PM

Hello,

In the new W164, I can choose 2 tire sizes:

a) 8J * 18 ET60 255/55 R18

b) 8.5J * 19 ET58 255/50 R19

I wanted something wider like the 275 that the W163 has as an option but this one don't have.

Will this ones work?
8,5x18 und 9,5x18, ET 35, LK 5/112

Why is the ET so different?

Best Regards,

Ruben.
Those may or may not work, depending on inside clearance to the brakes and suspension. The stance would not be right, in any case, being more tucked in than stock.

I am waiting to see what Lorinser and Brabus come out with this Fall--should debut at the Frankfurt show in September. 19 or 20 x 10s with 285s should be good proportion.
 

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Discussion Starter #3
Thanks.

Then I would wait.
 

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GregW / Oregon - 4/24/2005 10:06 PM

rubensans - 4/24/2005 1:11 PM
Why is the ET so different?
Ruben.
The stance would not be right, in any case, being more tucked in than stock.
GregW, Rubensans -

The smaller the offset the further out the wheels go. An ET of 35 would not be "tucked in" but instead would be pushed out ...like a skateboard effect. There is probably some flexibility to go with a smaller offset and still stay within the fender, but I don't know what that is. Remember with the W163, it originally had an offset of 62. On the W163, you can go as small as about 38 and have the wheel flush with the top of the fender (but sticking out on the sides). We will have to see what fits with the new W164.
 

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rubensans - 4/24/2005 4:11 PM

I wanted something wider like the 275 that the W163 has as an option but this one don't have.

Will this ones work?
8,5x18 und 9,5x18, ET 35, LK 5/112

Why is the ET so different?
Ruben -

There are several reasons why the ET is different on aftermarket rims.

First, many aftermarket rims attempt to allow for a wider tire (like what you want). To insure that a wider tire does not rub on the inside of the fender, they push the wheel out. This works to a certain point -- as long as they don't push the wheel so far out that the tire now rubs on the outside of the fender.

Second, by pushing the wheel out, you widen the stance and improve stability.

Third, they try and pick an offset that will fit as many models as possible. For example, you will find that the M Class and S Class wheels are often interchangeable.

There are probably other reasons, but I think that these are the most common.
 

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Wheel offset

RickT - 4/26/2005 9:09 PM

GregW / Oregon - 4/24/2005 10:06 PM

GregW, Rubensans -

The smaller the offset the further out the wheels go. An ET of 35 would not be "tucked in" but instead would be pushed out ...like a skateboard effect. There is probably some flexibility to go with a smaller offset and still stay within the fender, but I don't know what that is. Remember with the W163, it originally had an offset of 62. On the W163, you can go as small as about 38 and have the wheel flush with the top of the fender (but sticking out on the sides). We will have to see what fits with the new W164.
You are correct--here is a decent explanation:

http://www.usacomp.com/Offset.htm
 

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RE: Wheel offset

GregW / Oregon - 4/27/2005 8:27 AM

You are correct--here is a decent explanation:

http://www.usacomp.com/Offset.htm
I find that page a bit confusing. I don't use "back space" for example. Here's another page, more succinct and in line with MB terminology. Dan Landiss drives/races a W126.


http://www.landiss.com/suspension.htm
 
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