Brake Fluid & Equipment
Compression...Fresh racing brake fluid has no air bubbles. When you step on the brake pedal, 100% of the force is transferred from the master cylinder(s) to the calipers. Old fluid, or even worse, overheated (boiled) fluid will have contaminants or air bubbles that compress, taking away your brake force and performance. Hopefully a longer brake distance is all that is encountered, not a trip into the gravel trap and the ensuing splitter damage or even worse - hitting the wall.
A swap to performance brake fluid is one of the most economical performance improvements a track car can have. Performance per dollar, brake fluid is #1. Brake fluid maintenance should be one of the driver's top priorities before loading onto the trailer.