[s-cars] Tire/ Wheel Issues

[l.leung at juno.com]

Collective:

I have two questions regarding wheels/tires.

1) What is the "official" color of OEM Audi rims,
such as, in this case, UrS Avus 16 x 7.5 6 spoke
Speedlines. Is it still Zermatt Metallic?

2) Opinion requested. When I bought my UrS6, it came
with half worn (about 1/4") treaded snows on the 
aforementioned Avus rims. Three are okay, one has a
noticable bulge in the sidewall near the shoulder.
How much of a problem would there be replacing the
one bulged tire with a new one. I'm kinda on a tight budget,
so if I can avoid buying four new snows, it would help,
however, I won't compromise the safety/longevity of the
car to save a few $$$

TIA,

LL - NY