BEREA, Ohio — It’s only fitting that Odell Beckham Jr.'s custom orange Rolls Royce, ‘Big Bertha,’ was delivered to him at the Browns facility Thursday and parked by the fields during practice.

Because when describing the hip injury that continues to plague him, he used a wheels analogy.

“It’s like an extremely fast car with a little alignment or something off, and it’s right in the center of what you need,’’ Beckham said Thursday in his podium interview after practice. “Now the car can still go, but it’s dangerous.’’

Beckham, who missed most of team drills in training camp and all four preseason games largely because of the hip, admitted that he hasn’t gone fullspeed in practice since first noticing something early in camp.

“Especially with what I’ve had going on, I’ve been kind of afraid to just open up,’’ he said. “It’s something that hinders me from fully sprinting as fast as I can. I’d rather get to Sunday and open up [vs. the Titans] than be running around and hinder myself before the game.’’

Beckham can’t pinpoint a specific moment when he injured the hip —for which he was added to the injury report Thursday as a full participant. But he was held out of team drills after Aug. 6 -- only a little more than a week into camp.

“I don’t even know how it happened,’’ he said. “Just one day after practice I was feeling weird. No route or no play, no cut and it just kinda happened. When my adrenaline’s going I can’t feel anything.’’

He added, “it’s just something that I’ve been trying to figure out. I’ve been in and out of rehab every single day, never really dealt with anything like that.”

Beckham noted that although the injury has been weighing on his mind, “it’s getting better. It’s as good as it’s going to be until the season starts. It will be something that hopefully keeps progressing and gets better and not worse. It’s just something you got to deal with. We’ve got a game Sunday, so it’s time to go.”

Beckham, who downplayed the hip while sitting out joint practices with Colts in Indiana in mid-August, said he’s ready to hit top speed Sunday at FirstEnergy.

“I’m going to be running as fast as I can run, so if that’s not 100 I feel confident in myself to wherever I’m at, I’m going to be ready to play with whatever I got,’’ he said.

He declined to estimate what percentage he’s at, saying ‘I’m not a mathematician.’’

But isn’t 90% of OBJ better than 100% of almost anybody else?

“I’m confident in me,’’ he said. “I remember one game, I didn’t practice the entire week, couldn’t run even up to pre-game because of a hip pointer and swelling and I still went out there and played over in London, taped it up, went out there and just did what I can to help the team, so I’m confident in me.

“Once you get out there, it’s a different energy that you have. It’s a different adrenalin. I feel like nothing will get in the way of that.’’

A team source said last month in Indiana that Beckham’s current injury isn’t a hip pointer, but when he played on the one in London, he still managed five catches for 49 yards in a 17-10 victory over the Rams, on Oct. 23, 2016.

But he sounded somewhat distressed on Thursday that the hip is an enigma — lingering and not responding the way he hoped.

“I wish that it could’ve just completely went away,’’ Beckham said. “In 26 years [I’ve never] had anything like this. It’s unexplainable to me, but coach Freddie [Kitchens] and [Vice President of Player Health and Development Joe] Sheehan had a very nice plan of what to do, how to do it and they built me up nicely, so I’ve got to thank them for that. Just getting me to this point to where I can go. Like I said, hopefully it just gets better.’’

It’s unknown if the injury is related in any way to the torn quad muscle that cost Beckham the final four games of last season. He also missed 12 games in 2017 with a broken ankle that required surgery and the first four games of his rookie season with a hamstring injury. All told, he’s missed 21 games in his first five seasons with leg injuries, including 16 of the last 32.

But his friend Jarvis Landry, who’s known him since high school in Louisiana, is looking on the bright side.

“Obviously he’s struggling with some things that are minor and that he will get over, but he’s probably still running the fastest in the room right now,’’ he said. “It’s tough to tell, but he’s a competitor, he’s going to be ready for Sunday and that’s what we’re looking forward to.’’

Landry, who’s still bouncing back from an undisclosed injury of his own, knows Beckham well enough to know what to expect against the Titans.

“Obviously his health is most important, but I know when the ball is lined up on Sunday he’s going to be ready and he’s going to give the team all he’s got,’’ said Landry.

Beckham said there’s no reason to be concerned about his chemistry with Baker Mayfield, with whom he’s had precious few team reps this preseason.

“No,’’ he told a reporter, “I’ll let you decide and you can ask me after the game.’’

Fortunately for him, he’s stayed in the game mentally, and feels as prepared as he can be for the Titans.

"I would have to say I wouldn’t have gotten here if it wasn’t for those things,'' he said. "Taking down notes, visualizing and putting myself in the play before it happens is just something that I’ve been doing for a long time. It definitely helped me be here, I would say that.''

Come Sunday, it will be mind over matter.

"I feel way ahead of the game mentally, especially right now than I do physically,'' he said. "So my mental’s going to push my physical state to a different level. And that’s really all I need.''

A team source said last month in Indiana that Beckham’s current injury isn’t a hip pointer, but when he played on the one in London, he still managed five catches for 49 yards in a 17-10 victory over the Rams, on Oct. 23, 2016.

But he sounded somewhat distressed on Thursday that the hip is an enigma -- lingering and not responding the way he hoped.

“I wish that it could’ve just completely went away,’’ Beckham said. “In 26 years [I’ve never] had anything like this. It’s unexplainable to me, but coach Freddie [Kitchens] and [Vice President of Player Health and Development Joe] Sheehan had a very nice plan of what to do, how to do it and they built me up nicely, so I’ve got to thank them for that. Just getting me to this point to where I can go. Hopefully it just gets better.’’

It’s unknown if the injury is related in any way to the torn quad muscle that cost Beckham the final four games of last season. He also missed 12 games in 2017 with a broken ankle that required surgery, and the first four games of his rookie season with a hamstring injury. All told, he’s missed 21 games in his first five seasons with leg injuries, including 16 of the last 32.

But his best friend Jarvis Landry, who’s known him since high school in Louisiana, is looking on the bright side.

“Obviously he’s struggling with some things that are minor and that he will get over, but he’s probably still running the fastest in the room right now,’’ he said. “It’s tough to tell, but he’s a competitor, he’s going to be ready for Sunday and that’s what we’re looking forward to.’’

Landry, who’s still bouncing back from an undisclosed injury of his own, knows Beckham well enough to know what to expect against the Titans.

“Obviously his health is most important, but I know when the ball is lined up on Sunday he’s going to be ready and he’s going to give the team all he’s got,’’ said Landry.

Beckham said there’s no reason to be concerned about his chemistry with Baker Mayfield, with whom he’s had precious few team reps this preseason.

“No,’’ he told a reporter, “I’ll let you decide and you can ask me after the game.’’

Offensive coordinator Todd Monken acknowledged Thursday he’s not sure the Browns have seen Beckham at fullspeed yet, but the three-time Pro Bowler has had defensive coordinator Steve Wilks fooled.

“I don’t know how much you guys are out there, but he’s going full speed every day,'' Wilks said. "So our guys are getting a great look at what it’s going to be like game speed come Sunday.”

Kitchens, before Beckham revealed he was still struggling, noted, “I think he’s getting there pretty quick. I think Todd is just referring to we have not seen him in a game, and sometimes guys play faster in games than they do in practice. I think that’s all he was referring to.”

Beckham's Rolls Royce came to practice on Thursday.