[urq] winter tire / rim question ??????

[Louis-Alain_Richard at computerhorizons.com]

Martin,

Comments inserted bellow in your last post:





>Louis-Alain,
>
>So... do you agree or disagree.... kind of confused by "I have to 
disagree"
>and then "I think you are right"?? ;)
>No matter what the width of the rim, as long as the ET is the same the 
tire
>centerline will remain the same.


Where I disagree is when you say "Even if the rims width is different it 
should nto make difference where
the tire center and therefore edges are.":

You are right about the center of the rim remaining always in the center. 
(obvioulsy #1)
But the inner and outer lips will be further out from that centerline if a 
rim is wider than another. (obvioulsy #2)
The only thing that don't change with larger rims (with same ET) is the 
distance between centerline and mounting flange (obviously #3).
Conclusion: wider rims with same ET are larger in both directions but the 
mounting flange is always at the same place.

Where I agree with you, is when you say that "Are you sure the rims are 
ET45?". They musn't be ET45 to rub on a stock suspension with 195/65R15.

Enough for a friday...:-))


>The only other puzzling thing is that the tire should rub on the tie rod 
way
>before touching the spring seat BTDT with A4 16" rims (ET45) and 
225/50/16
>size tires...
>
>Bob, are we talking about front or rear rubbing issue?
>
>Cheers
>Martin Pajak





-----Original Message-----
From: Louis-Alain_Richard at computerhorizons.com
Martin, I have to disagree.
ET45 means the inner mounting surface is 45 mm outside of the centerline
of the rim.
So if you compare a 15x6 and a 15x10 (both ET45), you will see that the 4
inch difference is spreaded in half on both side of the rim.
See the drawing there (http://www.skulte.com/adapterfaq.html).
But I think you are right, since the Fuchs are 15x7 ET45 and they don't
rub, then Bob's wheels must be less than ET45.

Louis-Alain





"Martin pajak" <martin at quattro.ca>
?????????
I have 195/65/15 Nokian on ET45 and no problems ever... pleanty of
space...
Are you sure the rims are ET45?
Stock '83 Ur-q is 205/60/15 with ET45.... it does not make sense for
195/65
to rub on the same rim...
Even if the rims width is different it should nto make difference where
the
tire center and therefore edges are.

Let us know.

Cheers
Martin Pajak