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9J-20", 9-spoke Audi wheels - AtlasD3

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Old 05-13-2005, 05:54 AM
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Default 9J-20", 9-spoke Audi wheels - AtlasD3

<center><img src="http://pictureposter.audiworld.com/91373/a8_w12_1.jpg"></center><p>You mentioned that you had several sets for sale at a "gooood" price? Would you mind sharing the price?
Old 05-13-2005, 07:33 AM
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yes, email me some details too if you have a chance please
Old 05-13-2005, 07:50 AM
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Default Re: 9J-20", 9-spoke Audi wheels - AtlasD3

quattro gmbh 9 Spoke - 20x9

$655.00 each
$25.00 Center Cap
Addtional Charge for tire pressure monitors if applicable.

If you are going to run 275/35-20 tires, You must purchase the 18" mini spare from the W12 for emergency use.

You can have your tires sent directly to the dealer doing the buy for me and have them mounted and balanced for a $50 flat fee.
Old 05-13-2005, 08:42 AM
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Default out of curiosity, why the need for the W12 spare?

When do you expect to have these wheels in hand?
Old 05-13-2005, 08:48 AM
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Default Re: 9J-20", 9-spoke Audi wheels - AtlasD3

Why not a 5th 20" wheel for a spare? Is it too wide for the spare compartment? Why not use the 18" spare that I already have?
Old 05-13-2005, 08:49 AM
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Default Rolling Diameter is different with the 275/35-20

so the spare in 4.2's won't work if you have to use it (could damage the differentials). They should be here anytime now.
Old 05-13-2005, 08:50 AM
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It won't fit. As to your current wheel see below.
Old 05-13-2005, 12:25 PM
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Default Atlas, got a question about the mini-spare

The diameter of a new 275/35-20 tire is 27.6 inches. I know for a fact that no inflated tire that large will fit in the spare wheel well. If the mini-spare has an 18 inch wheel, I am assuming that it still needs a tire that has the same overall diameter in order to not cause problems.

A new 255/45-18 tire is 27 inches in diameter (.6 in difference) which works out to about 21 additional revolutions per mile. Wouldn't that difference in diameter cause a problem with the differentials?
Old 05-14-2005, 06:31 AM
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Default Mixing 275/35-20 and 255/45-18 is not a problem. ,,,

The Torsen center differential can handle a 3% difference in diameter. These tires are only 2% different, and since you're only running one spare, the effect on the center differential is half of that ... 1% and no problem.

The front or rear differential would see the "full" 2% difference, but these are just ordinary open differentials and can handle any difference up to the point that traction control is activated and begins braking one corner. I don't know what point that is, but I'm sure it's much more than a 2% speed difference.
Old 05-14-2005, 10:48 AM
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Default Thanks! I feel better now.

I guess I just need a non-directional 255/45-18 tire and the spare wheel and I will be all set.


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