Charlie, Charlie, Charlie.
Now I have the evidence to protest your National Championship. Perhaps you did not read the supplemental rules very well. I know I did.
In relevant part they read that "all competitors for the National Championship must use the same tire construction and compound for the entire championship series races beginning with the first qualifying session. Said contender to the National Championship must declare their tire choice to the Big Dog immediately after the conclusion of the first timed qualifying session and must use the same for the remainder of the National Championship Series. Failure to do so will constitute grounds for immediate disqualification regardless of the time after the completion of the Championship race."
Please forward your trophy and check to "Big Dog".
Offical National Championship Tire Czar
Mr. Big Dog