The No. 75 ES Class Mercer Porsche took the point during the 7 p.m. hour and has amassed a commanding 19 lap lead on the second-place No. 20 Team World Speed BMW M3.
"My stint was fun. I was racing with one of the trucks and the Trupeed Porsche," Tommy Sadler said of his run in the Mercer Porsche. "I didn't get a lot of laps in practice, so I was feeling my way around the car and the track. I was quickest at the end of my stint. The car is really strong and fast. We weren't able to get the handling just perfect, we are over working the front tires a little too much, so we have to be easy on them."
Team Edge is leading the E0 Class in their BMW.
"I had a great stint," Paul Blickman said. "We had a few problems at the beginning of the run, but we worked through those. The car is dependable and is doing well on fuel. The car handles great. We are having a little problem with our power steering, it is a little notchy. You have to unwind the wheel. It is a little different, but it is working. We need to preserve the car, preserve the brakes and log good times. Respect the car and we will do well."
In E2, the 051 of Team Super Mazda is winning the class in their Miata.
"I was focusing on being really steady for my stint," Emilio Cervantes said. "We got caught up by the guys who were in P2. We stayed cool and let them go bye. We caught them and are running our own race. We have Nitto tires and they seem to be out lasting our competitors, by twice the distance."
The No. 71 Scion Racing Team is leading the E1 Class.
"My stint was amazing. I had a great three hours," Scott Webb said. "The car is performing wonderfully. On my last lap I had some contact with the Mercer Porsche, and it damaged us both a little bit. The team went to work, put a new tire on it and bent the fender out a little and it went back out with a fresh driver. The amount of time you can lose in pit lane is tremendous. This team has practiced tire changes, fueling and driver changes. This team is really shines with the attention to details."
RJ Racing is leading the E3 Class in their Mazda Miata.
"We have been doing great so far," Rob Gibson said. "We have been dialing our tire pressures in and running our strategy. All of our stops have been great. The car is running perfectly, knock on wood. We have great brakes on the car. We need to keep it clean and make fast pit stops."
In ESR the No. 48 Radical is leading.
"We up in the top three overall early in the race," Jeff Shafer said. "Since then we broke an engine around 8 p.m. We changed that, and now we have to change the clutch. It was just slipping too much. Until the trailer is empty and there are no parts left to put on we will keep going."
The NASA 25 Hours of Thunderhill had 83 cars take the green flag, which is a record for endurance racing in North America. There are six classes (ES, ESR, E0, E1, E2, E3) competing on the three-mile, 15-turn track located 90-minutes north of Sacramento.