IndyCar turned the boosts up Friday and while single car runs were the focus of the day at the Indianapolis Motor Speedway, there were still a handful of tow-assisted laps that shot to the top of the standings.
Chief among them was the latest flier from Marco Andretti, as he kept the Andretti Autosport squad on point and atop the leaderboards. A tow-assisted 227.540 led all runners on Friday.
More notable than the continued presence of Andretti's team in the top ten – all bar Sebastian Saavedra were in the top seven – was the dominance of Chevrolet at the head of the field. Eight of the top 10 was Chevrolets, with only Scott Dixon and Dario Franchitti interrupting a lockout.
Dixon's 226.224 came toward the end of the day to lead the Honda runners.
KV Racing Technology made strides with the boost adjustment; Tony Kanaan ended 10th ahead of E.J. Viso an improved 12th and Rubens Barrichello a respectable 21st, the Brazilian posting his best lap yet this month at 224.272mph.
Engine issues sidelined Michel Jourdain Jr., who had a fire in the back of his Rahal Letterman Lanigan entry after running only a handful of laps Friday but nearly 340 laps for the month on his Honda. Oriol Servia for Panther/DRR did not turn a lap; an engine issue was rumored to be the culprit but Servia clarified in a tweet later Friday, “Ooops, looks like the problem was not the engine. Putting the old one back on. No running today but no grid penalty for Detroit.”
Servia's first running with the increased boost will come in Saturday morning's practice before the track opens for qualifying.
At the back, the Dragons hit 221 and 219 for high speeds with the pair of Lotus-engined cars running to 213 and 212, still about 14-15mph off the leading runners.
Thirty-two drivers recorded 1,206 laps without incident in a precursor to Pole Day time trials May 19 (11 a.m.-6 p.m.). All drivers were aided by a bump in the turbocharger boost of 10 kPa—which equals about 40 horsepower and 4-5 mph per lap—that will be utilized in qualifications.
Pos Driver Team/Car Speed
1. Marco Andretti Andretti DW12-Chevrolet 227.540
2. Ryan Briscoe Penske DW12-Chevrolet 226.835
3. Helio Castroneves Penske DW12-Chevrolet 226.716
4. Ryan Hunter-Reay Andretti DW12-Chevrolet 226.400
5. Scott Dixon Ganassi DW12-Honda 226.224
6. James Hinchcliffe Andretti DW12-Chevrolet 225.974
7. Ana Beatriz Andretti DW12-Chevrolet 225.653
8. JR Hildebrand Panther DW12-Chevrolet 225.571
9. Dario Franchitti Ganassi DW12-Honda 225.390
10. Tony Kanaan KV DW12-Chevrolet 225.322
11. Will Power Penske DW12-Chevrolet 225.288
12. EJ Viso KV DW12-Chevrolet 225.137
13. Josef Newgarden Fisher DW12-Honda 225.021
14. Charlie Kimball Ganassi DW12-Honda 224.964
15. James Jakes Coyne DW12-Honda 224.690
16. Ed Carpenter Carpenter DW12-Chevrolet 224.946
17. Takuma Sato Rahal DW12-Honda 224.825
18. Graham Rahal Ganassi DW12-Honda 224.789
19. Sebastian Saavedra Andretti DW12-Chevrolet 224.661
20. Mike Conway Foyt DW12-Honda 224.333
21. Rubens Barrichello KV DW12-Chevrolet 224.272
22. Justin Wilson Coyne DW12-Honda 224.258
23. Bryan Clauson Fisher DW12-Honda 224.224
24. Alex Tagliani BHA DW12-Honda 223.576
25. Wade Cunningham Foyt DW12-Honda 222.898
26. Simon Pagenaud Schmidt DW12-Honda 222.736
27. Townsend Bell Schmidt DW12-Honda 221.738
28. Michel Jourdain Jr. Rahal DW12-Honda 221.396
29. Sebastien Bourdais Dragon DW12-Chevrolet 221.191
30. Katherine Legge Dragon DW12-Chevrolet 219.430
31. Jean Alesi Fan Force DW12-Lotus 213.423
32. Simona de Silvestro HVM DW12-Lotus 212.516