Johnson brought his winning chassis from Las Vegas that also finished second at Texas, while Martin brought the same car that won at this race last year. An encouraging horsepower note comes from two-time Michigan winner Greg Biffle who had the third fastest lap of practice while using the new FR9 engine for Roush-Fenway Racing.
TOP 5 Practice 1 Speeds From Friday:
1) #42 Juan Pablo Moytoya 188.917 mph
2) #48 Jimmie Johnson 188.516 mph
3) #2 Kurt Busch 188.482 mph
4) #16 Greg Biffle 188.176 mph
5) #24 Jeff Gordon 188.088
Complete List of Practice Times From Jayski.com