W258CB began broadcasting at 97.7 FM as W249CB in December 2007 in Six Mile, re-broadcasting WLFJ-FM HD-3, which in turn was a simulcast of WHRZ-LP in Spartanburg, which carried a Christian Contemporary format.

[2] On July 20, 2012, Cox Radio announced the sale of its mid-market stations, including WJMZ and its lease of W249CB, to SummitMedia $66.25 million.

[7] On April 28, 2023, at 3 p.m., after signing off the "Awesome" format with an hour of songs themed around departure in some fashion (ending with "End of the Road" by Boyz II Men), the station flipped to urban contemporary as "Streetz 99.5", launching with "Players" by Coi Leray.

The format was to serve as a flanker for sister station WHZT against, most notably, Audacy's "The Block" translator trimulcast in the market.

Patterned after sister station KSRZ, the station segued to an adult contemporary format after the Christmas holiday at midnight on 12/26, filling the void left by WSPA-FM’s sale and subsequent flip to a Regional Mexican format in April 2024.