Truex's performance dramatically improved during the 2015 season, largely due to the new driver-crew chief relationship between Truex and Cole Pearn. During the Daytona 500, Truex led one lap and finished 8th. Truex earned nine top tens throughout the first 10 races, finishing second at Las Vegas. He led the most laps at Kansas and appeared on his way to a win, when a poor pit stop shuffled him to a ninth-place finish. After leading the most laps for four-consecutive races, Truex and Furniture Row finally broke into victory lane, winning the Axalta "We Paint Winners" 400 at Pocono Raceway in June getting Furniture Row Racing its 1st Sprint Cup victory since the Southern 500 in 2011 and breaking a 69 race winless streak for Truex. The win locked Truex and the team into the Chase for the Sprint Cup for 2015 and put him second in the standings. The next week, Truex would finish 3rd in a rain shortened race at Michigan International Speedway becoming the first driver since Richard Petty in 1969 to score 14 top 10s in the first 15 races of the season. Truex would not visit victory lane for the rest of the year but did score a total of 22 top 10s, including 8 top 5s, and finished 4th in the championship standings after racing his way to the championship 4 at Homestead.