Just after the recording of their sixth studio album, 1979's Night in the Ruts, Joe Perry left the band, citing differences with Steven Tyler, and formed The Joe Perry Project. Perry was replaced first by longtime band friend and songwriter Richard Supa and then by guitarist Jimmy Crespo (formerly of the band Flame). Night in the Ruts quickly fell off the charts (although it would eventually go platinum several years later), its only single being a cover of The Shangri-Las' "Remember (Walking in the Sand)", which topped out at #67.
The band continued to tour in support of Night in the Ruts with new guitarist Jimmy Crespo onboard, but as the 1970s came to a close, the band's popularity waned. Steven Tyler collapsed onstage during a performance in Portland, Maine in early 1980. Also in 1980, Aerosmith released its Greatest Hits album. The album has gone on to become the band's bestselling album in the United States, with sales of 11 million copies. In the fall of 1980, Tyler was injured in a serious motorcycle accident, which left him hospitalized for two months, and unable to tour or record well into 1981. In 1981, the band suffered another loss with the departure of Brad Whitford. After recording guitar parts for the song "Lightning Strikes", Whitford was replaced by Rick Dufay and the band recorded their seventh album Rock in a Hard Place in 1982. The album was considered a commercial failure, only going gold, and failing to produce a major hit single. During the tour for Rock in a Hard Place, Tyler again collapsed onstage, this time at the band's homecoming show in Worcester, Massachusetts, after getting high with Joe Perry, who met with Aerosmith backstage that evening.
On February 14, 1984, Perry and Whitford saw Aerosmith perform. They were officially re-inducted into the ranks of Aerosmith once more two months later. Steven Tyler recalls:
“ You should have felt the buzz the moment all five of us got together in the same room for the first time again. We all started laughin'—it was like the five years had never passed. We knew we'd made the right move.