Blizzaks are pure snow tires, and as such would not be eligible for Street Tire classes. Check out the Classes section of the rules (
http://thscc.com/rallycross/info/rallyx_rules.html#classes) which spells this out:
Quote:
Street Tire. For the purposes of this class, a "street tire" is defined as a "summer use" or "all-season" tire from any manufacturer that does not have an knobby or overly aggressive tread pattern, as determined by the Rallycross VP or his designate. Specifically excluded are snow tires, rally tires, mud-terrain or all-terrain tires, and any tire with a knobby tread pattern.
That aside, I know that Blizzaks (and most pure snow tires) have sidewalls that are nearly paper-thin, and might not be a good choice for rallycross anyway.
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Carl Fisher
Be Cool to the Pizza Dude:
http://www.npr.org/templates/story/stor ... Id=4651531