Punk rockers Rancid [ tickets ], who back in the spring unveiled a short round of July tour dates that kicks off tomorrow night (7/6), have since expanded the outing to run through the end of the summer.

The group's itinerary, which is shown below, gets underway in the Phoenix area, and now comprises stops in about 30 cities, including two-night stands in nine cities, three-night stands in Montreal and Washington, DC, and a four-night run in New York City.

"With over 150 songs to choose from every night, each set will be unique to itself," the group wrote in a message posted Tuesday (7/5) at its website. "In other words, you will not hear the same set twice."

The message goes on to say that some shows will include songs that the group has never before performed live.

Rancid's most recent studio album was 2003's "Indestructible," the sixth release by the Berkeley, CA-based quartet, and their first for the Hellcat label. The group plans to issue a new disc in the spring of next year, and to release a new DVD that includes all of the band's music videos "soon," according to its website.

Tim Armstrong (vocals, guitar), Lars Frederiksen (guitar, vocals), Brett Reed (drums) and Mark Freeman (bass, vocals) formed Rancid in the San Francisco Bay Area in the early '90s. The band's most commercially successful album to date is 1995's " ... And Out Come the Wolves," which spawned the hits "Ruby Soho," "Time Bomb" and "Roots Radicals."

In addition to his work with Rancid, Frederiksen also hosts an XM Satellite Radio show dubbed "Rancid Radio," which airs five times a week on the "Fungus 53" channel. The show includes a segment during which Frederiksen plays fan-submitted music mailed to the program. More information is posted at Rancid's website.