Tagliani will have the pole for Saturday's IndyCar Firestone 550, having turned in a two-lap average of 215.691 mph.
"We flew under the radar at Indy, but had a really fast car there and I think the car has been good on every type of track," Tagliani said. "It's looking good for the rest of the year."
This was the first IndyCar pole for Tagliani.
Graham Rahal qualified third and Scott Dixon was fourth. Dixon won Sunday's race in Michigan, which had to be shortened due to track surface damage.
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