The Supersuckers almost didn’t make it to 30 years.

The last decade has been particularly rough on the self-proclaimed “greatest rock ’n’ roll band in the world.”

In 2009, founding guitarist Ron “Rontrose” Heathman left and the band went on hiatus for a few years while frontman/bassist Eddie Spaghetti focused on his country-rock solo career. The group returned to the road and released its first album in six years, 2014’s “Get the Hell,” but guitarist Dan “Thunder” Bolton — another founding member — quit soon after. To top it all off, Spaghetti, born Edward Daly, was diagnosed with throat cancer in 2015 and underwent successful surgery on a lump in his neck.

“There (were) many, many years of that — just thinking, what the f— are we doing? Why are we even bothering with this? It’s such a hassle and nothing’s going right,” Spaghetti said recently from Vancouver, Canada, where the band played the second show of its 30th-anniversary tour. The trio (since Bolton’s departure) will return to Volcanic Theatre Pub on Thursday.

“But you’re inspired by the music to keep going, I guess. And there’s always that possibility of somebody actually noticing that we’re as good, if not better than any other popular rock ’n’ roll band out there.”

Spaghetti has been taking it a bit easier on the road since his recovery (though not much — this is a band known for worshiping “The Evil Powers of Rock ’N’ Roll”). “I have to be a little more mindful of not talking so much at the gigs, and that’s why I don’t spend nearly as much time at the merch booth as I used to,” he said.

Contrast that with his schedule: The 30th-anniversary tour stretches through October, with a break in August while Spaghetti tours Australia solo.

Bend became a constant in the band’s nonstop touring starting in the early 2000s.

“I think the first time we went to Bend, it was a real surprise what a cool little town it is,” Spaghetti said. “I always like that High Desert environment anyway; it reminds me of being at home in Arizona, only it’s a lot cooler.”

While The Supersuckers formed in Tucson in 1988 (originally as The Black Supersuckers, taken from an adult video), most people think of the group in conjunction with the alternative rock boom out of Seattle in the early ’90s, thanks to a fateful move to the Pacific Northwest rock bastion in 1989. Spaghetti recalled flipping a coin to determine whether the then-five-piece band would move there or to New Orleans.

When Spaghetti and company arrived in Seattle, they faced a burgeoning scene with bands such as Soundgarden, Mudhoney, Nirvana and Pearl Jam predecessor Mother Love Bone on the cusp of breaking out. The struggles weren’t all musical — original lead singer Eric Martin would eventually die of a drug overdose.

“We thought we were gonna move up to Seattle and be the most popular, most awesome band anybody had ever seen up there, because who was from Seattle?” Spaghetti said. “We hadn’t heard of any of the bands. This was ’89, that’s when we moved in May of ’89. We moved up to Seattle thinking, ‘We’re gonna blow everybody away; nobody’s ever seen anything like this.’ And we get there, and there are all of these amazing bands already in place, already playing to big crowds. … We were blown away and frankly a little bit intimidated by it, because we were like, ‘Oh my God, we have a lot of work to do.’ It wound up being really good for us to have that challenge set before us, and also all the bands up there were super supportive.”

By the time the band recorded its debut album, “The Smoke of Hell,” released in 1992 on Seattle mainstay Sub Pop, grunge exploded into mainstream consciousness.

“That was crazy,” Spaghetti said. “We went and recorded at the same place Nirvana recorded (1989 debut album) ‘Bleach’ with the same guy, Jack Endino, who recorded that record. It was just kind of a heady time. Just the fact that Sub Pop was willing to put out our record was a victory for us. I felt like it took longer than I wanted it to, even though it happened pretty much right away. When you’re young like that, everything has to happen right now or it’s too late.”

The band revisits that album and its follow-up, 1994’s “La Mano Cornuda,” in its marathon anniversary shows, playing both albums in their entirety. This presented some challenges for Spaghetti, guitarist “Metal” Marty Chandler and drummer Christopher “Chango” Von Streicher — many of the songs have dropped out of the live repertoire over the years, or have never been performed before.

“We actually needed to go into a rehearsal place and actually do the work, which is something that we don’t do too often unless we have a new record to record,” Spaghetti said. “We adhere to this no-practice policy. We’re on the road so much, we don’t really feel like we need to get into a room and practice together. But we definitely did for this. It was a fruitful endeavor.”

The shows also feature a country set (the band released its first all-country album, “Must’ve Been High,” in 1997, following it up with 2015’s “Holdin’ the Bag” and Spaghetti’s country-tinged solo records). And fans can expect new material from the group’s hard-rocking new album, “Suck It,” due for release Sept. 21.

“It’s possibly our best record we’ve ever made, which is hard to believe,” Spaghetti said. “I think the last three records that we’ve made including this one are our best records that we’ve ever made, and who does that? What band has been around for years and is just now putting out their best stuff? I don’t think it’s very common, although it ought to be — if you were a plumber for 30 years, you’d be a f—ing amazing plumber.”

That confidence in the music has kept Spaghetti at it for this long, even if the rest of the world hasn’t always been on board with the band’s classic rock/punk/country hybrid.

“What we do, we’ve come to realize, it’s for so few people it’s almost barely even worth doing,” he said. “If we didn’t love it so much, we wouldn’t even bother with it, but it still turns us on and makes us feel like we’re 18. That’s what I like about it.”