Sims made the move from North Queensland to the Wire at the end of 2015.
The veteran Aussie forward was a mainstay for the Wolves last year, making 28 appearances and scoring two tries.
Sims made the third most tackles and carries at the club, and the fourth most metres.
But the 30-year old is not satisfied with his displays and believes he can do better.
“I fully enjoyed my first year,” Sims told Love Rugby League.
“I learned a lot from it, it’s a lot different to back home. So I learned a lot of things and I can do better, and maintain doing.
“We had a really good squad last year and we’ve strengthened it even more this year.
“Our intentions are high and hopes are high for this year, but we know it’s going to take a lot of hard work and it’s something we’re all willing to do.”
Sims is confident these signings will make the Wire a much tougher proposition in 2016.
“Full credit to the club, we’ve recruited really well,” he said.
“We’ve got some guys in some key areas that we identified from last year.
“We’re just building little steps to a big start to the year and maintaining that through the whole season.”