DAVIE, Fla. -- Miami Dolphins starting running back Lamar Miller knows exactly what he wants this year. Miller, who put on about 15 pounds of muscle in the offseason, believes he's ready for more carries in 2015.

But there is one problem for the usually-quiet Miller.

"I don't know. I'm going to have to find a way to say it [to coaches]," Miller said.

Miller is a man of few words. He prefers to lead by example; he led the Dolphins in rushing with 1,099 yards and averaged 5.1 per carries. Both were career highs.

Last year when Miller had seven games of 12 or fewer carries, Miller shrugged it off and never complained. Miller also averaged just 13.5 attempts per game, which isn't the norm for a player who nearly had 1,100 yards.

Will Miller's workload change? That decision is mostly up to the coaching staff.

But Miller, who is entering a contract season, said this week that he plans to speak up more if he has it going.

"I'm going to start doing that," Miller said of being more vocal. "I'm a team guy, so whatever the coaches call, I just try to do my assignment. But if I feel like we can run the ball this year, I'm just going to try and open up a little bit more."

Dolphins head coach Joe Philbin told ESPN.com before training camp that he's open to Miller getting more carries this year. Philbin suggested that Miami's run scheme, which focuses heavily on option runs, factored into to Miller's low-carry output at times.

Statistics suggest Philbin prefers to share the wealth at running back. No tailback has rush for more than 227 attempts in Philbin's three seasons in Miami.

"Whatever we're doing to move the football and score points we have to do," Philbin said Thursday of running the ball. "If one person can help us do that and giving him 23 carries a game to get 350 carries, I have no problem doing that."

Miller must prove that he can stay healthy and productive to reach his potential. That is the best way for Miller get more carries.