S8, Left-Foot Braking, And Tire Question

[The Judge <dismiss@earthlink.net>]

Hola gents (and ladies):

All of the talk about the A8 (which I will hopefully drive Wed. night 
with Frank, Paul, et al.) has gotten me excited.  Check this out though:

>From the May 1996 Issue of (UK) mag Performance Car:

(Picture Included) "Drive Quitely, Carry a Big Stick"
"It was an obvious thing to do, and we're gald Audi has done the obvious 
- produce a smokin' version of the A8 luxury saloon.  Called the S8, the 
thunder-saloon is powered by a 340bhp derivative of the standard car's 
4.2 litre V8; it also uses the Quattro's drivetrain.  

Styling differences from the regular A8's are minimal, but the S8's 18in 
alloys are certain to become badges of honour for the fortunate few who 
can afford the 65k (UK Pounds) price tag.  Brits have to wait until early 
'97 for right-hookers to appear."

Will it be a Turbo?  Will it come to the States?  WIll I win the Lottery?

Also in Performance Car:

Section on the benefits of "left-foot" braking from a Scandanavian rally 
car guru.  Better stopping distance, etc., but be careful, it is not easy.

Section on Audi's ice-driving school in Germany.  Very cool thing (for 
big buck$).

Question:

What are the biggest tires (low-profile Z rated) and wheels I can put on 
my '90 80Q?
What does the "60" in (for example) 235/60 ZR 15 mean?
What about the first number?  I know it is MM across the tread, but how 
can 235's and 245's both go on 16 inchers if they are both the same width 
across?

Thanks,
Todd

The Judge
90 80Q (Terror of Los Angeles)
86 VW  Scirocco 16V Wolfsburg
85 5KCS  (not missed at all)