Newgarden’s Team Penske-Chevrolet clocked a 1min42.6279sec – an average of 140.804mph – to claim top spot by over quarter of a second from Schmidt Peterson Motorsports-Honda driver Robert Wickens.

Sebastien Bourdais was third fastest for Dale Coyne Racing with Vasser-Sullivan-Honda while Will Power and Simon Pagenaud were 0.43 and 0.53sec respectively behind their reigning champion teammate.

Graham Rahal and Takuma Sato put both Rahal Letterman Lanigan Racing-Hondas into the top 10, separated by Detroit winners Scott Dixon (Chip Ganassi Racing-Honda) and Ryan Hunter-Reay (Andretti Autosport-Honda).

Marco Andretti completed the top 10.

Alfonso Celis, who performed competently in his first ever IndyCar session this morning, this afternoon spun his Juncos Racing-Chevrolet off the track at Turn 13 on his fourth lap this afternoon, launching over a curb and the grass, before tearing off his rear wing on a tire barrier.

IndyCar, Road America free practice 2

Cla	#	Driver	Laps	Time	Gap	Interval	Mph
1	1	Josef Newgarden	22	1'42.6279			140.804
2	6	Robert Wickens	18	1'42.9025	0.2746	0.2746	140.428
3	18	Sébastien Bourdais	16	1'43.0020	0.3741	0.0995	140.292
4	12	Will Power	19	1'43.0545	0.4266	0.0525	140.221
5	22	Simon Pagenaud	19	1'43.1599	0.5320	0.1054	140.078
6	15	Graham Rahal	17	1'43.1995	0.5716	0.0396	140.024
7	9	Scott Dixon	19	1'43.4212	0.7933	0.2217	139.724
8	28	Ryan Hunter-Reay	15	1'43.4755	0.8476	0.0543	139.650
9	30	Takuma Sato	15	1'43.5410	0.9131	0.0655	139.562
10	98	Marco Andretti	14	1'43.6221	0.9942	0.0811	139.453
11	14	Tony Kanaan	16	1'43.6559	1.0280	0.0338	139.407
12	27	Alexander Rossi	15	1'43.6666	1.0387	0.0107	139.393
13	5	James Hinchcliffe	14	1'43.6899	1.0620	0.0233	139.362
14	26	Zach Veach	14	1'43.9088	1.2809	0.2189	139.068
15	19	Zachary Claman De Melo	16	1'43.9204	1.2925	0.0116	139.053
16	20	Jordan King	18	1'43.9475	1.3196	0.0271	139.016
17	21	Spencer Pigot	15	1'44.1478	1.5199	0.2003	138.749
18	10	Ed Jones	18	1'44.1869	1.5590	0.0391	138.697
19	4	Matheus Leist	20	1'44.2083	1.5804	0.0214	138.668
20	59	Max Chilton	18	1'44.4224	1.7945	0.2141	138.384
21	88	Gabby Chaves	20	1'44.4628	1.8349	0.0404	138.331
22	23	Charlie Kimball	18	1'45.1363	2.5084	0.6735	137.444
23	32	Alfonso Celis Jr.	3	1'46.1592	3.5313	1.0229	136.120