no quattro

My original wheels are 18". A factory option were 19's, but I read an article that said Audi was worried because the service description (load capacity?) dropped from 99 to 96 w/ the 19's. I am considering 20's as I've seen them on some cars--but their service description is only 92. Newer cars run 19 or 20" wheels and all the tires have the same service # irrespective of manufacturer.
Is this something I should be concerned about?

Gary@Tirerack.com

What is the year and model of the Audi?

no quattro

2003 RS6

(It was supposed to be in my sig)

Gary@Tirerack.com

The gross axle weight rating on your car is :

Front 2778 lbs Rear 2646 lbs

All of the factory tires used in 255/40R18 and 255/35R19 have more than enough load capacity.

no quattro

What about the 20's?

Gary@Tirerack.com

What size of 20" tire are you referring to? I see no 20" Audi original option for a 2003 RS6.

no quattro

I am referring to aftermarket wheels,
20 X 9
Offset: 30mm
Backspacing: 6.18"

As I said in my original post only 18's and 19's were available on the 2003 RS6. I bet most the cars I see w/ 20's are aftermarket.
Not sure what the new Euro RS6 rides on, but I'm sure it is more than 18".

All the tires for 20" rims carry a 92 service description, so I asked the question in my original post. If Audi hadn't made the comment on the lower service description of the 19's I wouldn't have noticed.
If any Audi owners use 20" wheels I would be interested in your opinions.

no quattro

No response?
I can't say my question was adequately answered on this forum, so I cancelled my order for 20" wheels and tires.
It was an order from the Tire Rack for about $2,000. Sorry.

Gary@Tirerack.com

Without knowing what 20" tire size you are referring to, I cannot check the load capacity of the tire to be sure it meets the requirements for your vehicle.