(Reuters) - Wall Street's main stock indexes opened lower on Friday after an in-line inflation report kept in place bets for a September interest rate cut, but stoked concerns of tariffs feeding into prices.

The Dow Jones Industrial Average fell 45.9 points, or 0.10%, at the open to 45,590.96. The S&P 500 fell 12.6 points, or 0.19%, at the open to 6,489.28​, while the Nasdaq Composite dropped 74.8 points, or 0.34%, to 21,630.326 at the opening bell.

(Reporting by Sanchayaita Roy in Bengaluru; Editing by Devika Syamnath)