2016 Pure Michigan 400

Aero package

NASCAR announced in late July that the modified aerodynamic package used at Michigan in June and Kentucky in July was used one more time this past weekend at Michigan.^[13] In addition to the aero changes used in the 2016 NASCAR Sprint All-Star Race, there was a reduction in spoiler size from 3.5 to 2.5 in (8.9 to 6.4 cm), a two-inch (5.1 cm) reduction of the splitter and resizing the deck fin.^[14]

Entry list

The preliminary entry list for the race included 40 cars and was released on August 22, 2016, at 3:36 p.m. Eastern time. Alex Bowman drove in place of Dale Earnhardt Jr. this weekend as he recovers from a concussion.^[15]

First practice

Martin Truex Jr. was the fastest in the first practice session with a time of 35.724 and a speed of 201.545 mph (324.355 km/h).^[16]

Second practice

Tony Stewart was the fastest in the second practice session with a time of 35.622 and a speed of 202.122 mph (325.284 km/h).^[17]

Final practice

Denny Hamlin was the fastest in the final practice session with a time of 36.386 and a speed of 197.878 mph (318.454 km/h).^[18]

Qualifying results

First half

Under mostly cloudy Michigan skies, Joey Logano led the field to the green flag at 2:18 p.m. The field started to string out after five laps as is typical at a track like Michigan. Chris Buescher reported engine issues early on that turned out to be a broken spark plug.^[23] He said after the race that he knew "it isn’t fun opening a hood of a race car that is as hot as it is and trying to work on it. Kudos to my guys for keeping their heads down and working at it and getting it fixed. Usually when you have engine trouble you are along for the ride. It ended up being something a little more simple than I guess we originally figured. We got back up and running and made some laps, and made a really terrible day into just an okay day. We will have to get it back at the shop and tear it down and take a look at it — and diagnose from there to see if it was a freak accident or something we need to look at going forward.”^[24] The first caution of the race flew on lap 21. It was a scheduled competition caution for overnight rain. Regan Smith opted not to pit and assumed the race lead. He pitted the next lap and handed the lead back to Logano. Brian Scott was tagged for his crew being over the wall too soon and restarted the race from the tail end of the field.

The race restarted on lap 25. Kevin Harvick took the lead from Logano going into turn 1. The second caution of the race flew the same lap for a single-car spin. Exiting turn 4, Kyle Busch got loose and spun out.^[25]

The race restarted on lap 30. By lap 39, Alex Bowman – who was subbing for Dale Earnhardt Jr. – fell from sixth to out of the top-10 in what was later determined to be an ignition issue. Denny Hamlin radioed in electrical issues, but these subsided after a while. Martin Truex Jr. powered by Harvick on the frontstretch to take the lead on lap 59. Ryan Blaney hit pit road on lap 63 and triggered a rush of green flag pit stops. Truex pitted from the lead a lap later and handed the lead to Harvick. Truex lost time on pit road after his car fell off the jack. Harvick pitted from the lead on lap 67 and handed the lead to Brad Keselowski. He pitted on lap 71 and the lead cycled to Jimmie Johnson.

The routine of strung-out racing was the norm for the next 36 laps until Blaney kicked off the next round of green flag stops on lap 107. Johnson pitted the next lap and handed the lead to Chase Elliott. He pitted the next lap and handed the lead to Keselowski. He would stay out for another eight laps before pitting on lap 117 and the lead cycled to Elliott before debris brought out the third caution of the race on lap 118.

Second half

The race restarted on lap 126. Kyle Larson beat Elliott going into turn 1 to take the lead. After that, the field settled into place until Logano kicked off the final round of green flag stops with 47 laps to go. Larson pitted from the lead, along with Elliott, with 44 laps to go and handed the lead to Keselowski. Elliott beat Larson off pit road, which allowed him to take the lead when the pit stop cycle concluded. Keselowski pitted the next lap and handed the lead to Matt Kenseth. He pitted with 35 laps to go and handed the lead to Ryan Newman. He pitted with 33 laps to go and handed the lead to Greg Biffle. He pitted with 32 laps to go and the lead cycled to Elliott. During the pit cycle, Aric Almirola was black-flagged for an uncontrolled tire and was forced to serve a pass through penalty.

A tire carcass that came off the No. 46 of Michael Annett brought out the fourth caution of the race with 13 laps to go.^[26]

The race restarted with nine laps to go. Larson was pushed to the lead by Keselowski and drove on to score the victory.^[27]

Driver comments

Larson said in victory lane that his team has "worked hard to get a win, and we just haven't done it Finally, all the hard work by everybody, the hundreds of people at our race shop, people who have gotten me to the Cup Series all paid off. I couldn't quite catch my breath there after I got out of the car because I spent two minutes screaming. I was so pumped up. It was pretty special, and I will remember it forever. I have been close a few times in my career and to get it before my 100th career start next week is pretty awesome."^[28] He also took time to dedicate the victory to his friend, the late Bryan Clauson, saying "This one is for the Clauson family. We really miss Bryan. We love you guys. We’re going to miss him. We parked it for him, so that’s really cool."^[29]

Following a runner-up finish, Elliott said he "made another mistake. Had two opportunities to get out front there and kind of control the race and let Kyle get a better start on me. I spun the tires and didn’t do my job right. It’s about as simple as that. When your tires are spinning, you aren’t going forward. It’s definitely unfortunate. I hate to let my guys down like that. They bailed me out a few times today, and I gave it right back.’’^[30]

"All in all, a lot to be proud of,” Keselowski said of his third-place finish. “Seems like every time we come here, we want to win so bad, we run third or fourth every time, which is really good in the Sprint Cup Series, but it is certainly not the win we’ve been looking for. I think this package is pretty strong. I like it a lot, personally. It’s not perfect, that’s for sure. There’s a lot of stuff to still work on. I think it’s a smaller improvement in showcasing driver talent to win races.”^[31]

Penalties

On the Wednesday following the race, the No. 2 team was issued a P2 penalty for failing post-race technical inspection.^[32] As a result, Keselowski and Paul Wolfe were fined $15,000, and Keselowski was docked 10 points.^[33]

Race summary

• Lead changes: 13 among different drivers
• Cautions/Laps: 4 for 17
• Red flags: 0
• Time of race: 2 hours, 27 minutes and 29 seconds
• Average speed: 162.730 miles per hour (261.889 km/h)

Television

NBC Sports covered the race on the television side. Rick Allen, Jeff Burton and Steve Letarte had the call in the booth for the race. Dave Burns, Mike Massaro, Marty Snider and Kelli Stavast reported from pit lane during the race.

Radio

The Motor Racing Network had the radio call for the race, which was simulcast on Sirius XM NASCAR Radio.