Yoko A048s for Regional Solo events
For anyone running in the Street Category this year, a friend of mine just pointed out this rule to me:
2014 Rules, 13.3.C.1: "Any tire which is OE on a car eligible for Street Category may be used on a car in Regional Solo events."
That means the stock Yokos are legal in Street.
I normally run in a local Tire index (PAX class) which has its own treadwear rules, so I'm not planning to exercise the advantage of using the Yokos, but I thought I would post it up here for others.