Perez replaces Lewis Hamilton at the team and Button thinks the Mexican will be a positive addition to McLaren.
"It’s always interesting to have a new team-mate – there’s that inevitable getting-to-know-you period when you’re settling in, but I’m really pleased to have Checo at Vodafone McLaren Mercedes," he said. "We all saw what he was capable of doing behind the wheel of a Sauber last year and I think he’s a very good addition to this team."
"The most important thing is that you have a good working relationship, that you can share ideas and information freely and that you’re working together with the engineers for the good of the team".
"That’s never been an issue at Vodafone McLaren Mercedes and I think we’re going to work well together – Checo may only be 22, but he’s very sensible and he knows what’s needed to get the most from the car, so I predict it’ll be a very strong partnership."
Button also reckons the teams enter 2013 with a greater confidence about Pirelli's tyres.
"I think all the teams will go into this season feeling more assured about the Pirelli tyres. As you know, last year was a bit of an unknown as we all got to grips with the new rubber, but that’s less likely to happen this time around, so there’s more stability there. There are differences to the tyres – the shape and the compounds, but I don’t think they’ll be as fundamental to the overall car performance as they were last year," he said.
"In terms of regulations, yes there is some stability, so I expect most teams will have continued to refine their car package over the winter. It’s always really interesting to see how the cars develop during a period of rules stability, because you watch the progress from year to year as the engineers refine and improve their thinking and ideas. You can literally see how the car has improved from season to season. It’s crazy."
"I hope there’s stability for another reason, too: I won the last race of 2012 so it would be perfect to win the first race of 2013!"