Andretti’s #98 machine turned a total of 117 laps but his best came at around the halfway point of his day, a 227.053mph lap that made him the only driver to breach that barrier.

Chip Ganassi Racing-Honda’s Scott Dixon was second fastest with a 226.329, while in the closing 40mins, defending winner Takuma Sato slotted Rahal Letterman Lanigan Racing-Honda ahead of Schmidt Peterson Motorsports-Honda’s rookie Robert Wickens as the claimed third and fourth.

Charlie Kimball did a great job to clock fifth fastest for Carlin-Chevrolet, for whom this will be the first Indy 500 attempt.

Tony Kanaan brought out the only yellow flag that wasn’t for a track inspection or debris when a throttle sensor failed, but he was able to remain firmly in the top 10, and his best no-tow speed of 223.048 kept him top of the NT charts.

Top one-off Indy entry was Oriol Servia in the Scuderia Corsa-Rahal Letterman Lanigan Racing-Honda, grabbing ninth place ahead of another Indy-only (possibly) driver, Sage Karam in the top Dreyer & Reinbold-Chevrolet.

The Penske quartet had a relatively subdued day judging by lap speeds alone, but Josef Newgarden (11^th), Helio Castroneves (18^th), Will Power 21^st and Simon Pagenaud (24^th) did a lot of running in convoy in the mid-afternoon to gauge aero effect.

James Hinchcliffe turned the most laps (129) but only one car (Matheus Leist) did fewer than 60.

Indy 500 practice, Day 2

Cla	#	Driver	Laps	Time	Gap	Interval	Mph
1	98	Marco Andretti	117	39.6383			227.053
2	9	Scott Dixon	115	39.7651	0.1268	0.1268	226.329
3	30	Takuma Sato	112	39.8039	0.1656	0.0388	226.108
4	6	Robert Wickens	113	39.8078	0.1695	0.0039	226.086
5	23	Charlie Kimball	87	39.8430	0.2047	0.0352	225.887
6	14	Tony Kanaan	85	39.8688	0.2305	0.0258	225.740
7	88	Gabby Chaves	79	39.9158	0.2775	0.0470	225.475
8	20	Ed Carpenter	93	39.9709	0.3326	0.0551	225.164
9	64	Oriol Servia	115	40.0118	0.3735	0.0409	224.934
10	24	Sage Karam	82	40.0201	0.3818	0.0083	224.887
11	1	Josef Newgarden	90	40.0417	0.4034	0.0216	224.766
12	13	Danica Patrick	85	40.0766	0.4383	0.0349	224.570
13	29	Carlos Munoz	123	40.0780	0.4397	0.0014	224.562
14	21	Spencer Pigot	86	40.0812	0.4429	0.0032	224.544
15	7	Jay Howard	113	40.0821	0.4438	0.0009	224.539
16	4	Matheus Leist	59	40.0879	0.4496	0.0058	224.507
17	59	Max Chilton	80	40.0978	0.4595	0.0099	224.451
18	3	Helio Castroneves	98	40.1039	0.4656	0.0061	224.417
19	27	Alexander Rossi	103	40.1404	0.5021	0.0365	224.213
20	66	J.R. Hildebrand	69	40.1556	0.5173	0.0152	224.128
21	12	Will Power	97	40.1778	0.5395	0.0222	224.004
22	28	Ryan Hunter-Reay	112	40.1859	0.5476	0.0081	223.959
23	60	Jack Harvey	117	40.1923	0.5540	0.0064	223.923
24	22	Simon Pagenaud	97	40.2276	0.5893	0.0353	223.727
25	63	Pippa Mann	78	40.2445	0.6062	0.0169	223.633
26	26	Zach Veach	120	40.2461	0.6078	0.0016	223.624
27	10	Ed Jones	68	40.2518	0.6135	0.0057	223.592
28	32	Kyle Kaiser	106	40.3128	0.6745	0.0610	223.254
29	5	James Hinchcliffe	129	40.3262	0.6879	0.0134	223.180
30	18	Sébastien Bourdais	110	40.3325	0.6942	0.0063	223.145
31	17	Conor Daly	87	40.4200	0.7817	0.0875	222.662
32	25	Stefan Wilson	104	40.4621	0.8238	0.0421	222.430
33	33	James Davison	74	40.4623	0.8240	0.0002	222.429
34	15	Graham Rahal	78	40.5220	0.8837	0.0597	222.102
35	19	Zachary Claman De Melo	67	40.5729	0.9346	0.0509	221.823