I'm assuming that all Mercedes rims are positive offset. In the oldl
days rear wheel drive cars were typically negative and front wheel
drive cars were positive since they were trying to make room
everywhere they could, and suspension geometry is easier to work out
with positive offsets. I had been assuming in my search for wheels
that the offsets were negative, but now I'm thinking that they aren't.
I've had the wheels off of my 84 300D to do brakes, and I think that I
remember that the back of the wheel has a huge cavity. So when I look
for rims, I could actually get a numerically higher offset if I were
willing to use spacers? I had been thinking the other way around.
Please tell me if I have confused myself. It woudn't be the first
Basically I think that stock on my car is 14X6 with a 35mm offset. So
if I went to a 15X6.5 with a 44 m offset, I'd think that the wheel
would stick out an additional 9mm plus half of the half inch(6.5mm)
for a total of 15.5 mm towards the center of the car. It would also
move in about 3 mm on the outside of the car. I wonder if that 15.5 mm
would cause trouble. I'd be comfortable with a 5 mm spacer, but not
much more than that.
Is my reasoning straight?
No cars are positive offset...
All MB wheels are negative offset.
By putting a spacer, you are making it more positive...
For example... a wheel has ET34 and you put a 10mm spacer, you made it ET24.
Which pushes the wheel outward.
I've looked around on the internet, and I really think that you have
this backwards. If you were to take a wheel with offset of 34 and make
it 24 by adding a spacer, that would mean that you have drawn the
mounting surface closer to the center of the wheel. This means that he
mounting surface was on the outboard portion of the wheel, which is
positive offset. One thing you said must be false, either MB wheels
are all positive, or the spacer woudl turn ET34 wheels into ET44, not
ET24. Maybe I should just take my spare out and measure it.
I guess a handy thing to know is how much clearance do I have to work
with on the inside? I've looked under the car, and it seems that there
is a good bit, but has anyone actually measured it, or found that it
rubs somewhere other than the rod ends? Is there less than a
centimeter(about 3/8 inch) anywhere?
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