The Turkey international has joined on-loan from Wolfsburg.
Wheater told the Bolton News: "We needed a bit more flair up front. We have some big tough players but we needed someone like Tuncay who showed what he can bring against Macclesfield.
"If you have someone like the skipper playing up there, it's an easy ball because he is going to win most of the balls.
"People think it's long balls but it's not. The skipper is the best in the league at doing that for us.
"Tuncay is probably the one who will get the knock downs and get a goal for us. There are goals everywhere in this team."