What determines what tires get installed on the car. I know alot have the SP9000's but some have the P-Zeros...

Inquiring minds want to know...

(should be out of breakin period tomorrow! has anyone ever mentioned that this is one hell of car?)

probably what's available when the tires get put on the wheels.
My RS6 came with SP9000's and another similiar RS6 at the dealer (delivery one month apart) came with the P-Zeros.

I am continually amazed with my RS6. I wouldn't change anything on the car.

There's a U-Turn that I've taken with every other Audi I've ever owned. Today I took the same U-turn with the RS6. All I have to say was Damn. :->