By Rob Gray

NASCAR Wire Service

Distributed by The Sports Xchange

NEWTON, Iowa -- Two tires or four?

Brad Keselowski's team chose the former in advance of a tense late-race restart Saturday in the NASCAR Nationwide Series U.S. Cellular 250 at Iowa Speedway.

It proved a sound strategy.

Keselowski staved off a last-lap charge from Michael McDowell and surged to Victory Lane for the second straight time at the 7/8-mile short track.

Keselowski, who will complete a double-duty weekend Sunday in the NASCAR Sprint Cup Series race at Pocono Raceway, had opened more than a one-second lead on Sam Hornish Jr. before James Buescher crashed on Lap 241, setting up a dramatic finish on a night otherwise dominated by Keselowski and Hornish.

McDowell finished second after taking a brief lead on the restart. Pole-sitter Trevor Bayne, Hornish and Ty Dillon completed the top five.