I always "run what I bring", so to speak, but my local road course is close enough that I usually enlist a helper (parent or girlfriend) to drop a support vehicle off the night before with everything I
might need, just in case (tools, brakes components, daily-driving wheels/tires, etc). I'ts overkill, and I've never needed any of the just in case items, but my OCD requires that I be over prepared
