NASCAR star Kyle Busch has opened up on the 'really fun' relationship he had with former Cup Series rival Greg Biffle.

Biffle tragically lost his life at the age of 55 in December when he and his family were involved in a plane crash when their jet attempted to land at Statesville Regional Airport in North Carolina. Sadly, Biffle's wife Cristina, his son Ryder and daughter Emma also died, along with three others.

Busch was one of the first to pay tribute to Greg on his Instagram when the tragic news dropped, sharing several photos of the two of them and their families enjoying what looked like some great times over the years.

NOTE: A public memorial to remember Biffle, his family and the other victims of the plane crash is set to take place in Charlotte today, Friday, January 16. Fans unable to attend in person can watch via a live stream on NASCAR.com, Facebook, The NASCAR Channel or YouTube.

Kyle Busch on Greg Biffle friendship

Busch spoke to the media for the first time in 2025 this week after taking part in NASCAR's Cup Series test at North Wilkesboro Speedway.

During his conversation with the press, Busch was quizzed on his relationship with Biffle, to which he replied (via Peter Stratta): “I mean myself and Greg, we had a really fun relationship. It was really cool.

“We would go to the sand dunes and stuff like that. I mean, there's a lot of people who talk about him and going to the sand dunes. He had a big passion for all of that and he kind of got me hooked on it when we were doing the sand cars in the side-by-sides and stuff and so we we spent a lot of time out there before [Busch's son] Brexton started racing.

“We were out there once or twice a year, out at his compound or Ron Pratt's compound or, you know, somewhere. So it was always really fun.”

On track relationship

It wasn't just off the track that the pair shared a good relationship; Busch also recalled a very specific memory that showed just how much they respected each other.

"I ran into him one time…maybe more than that…but I remember running into him one time at Darlington off of two. I moved him out of the way, I think it was for the lead. And I let him back by, and then I redid it the clean way, you know," Busch explained.

“Those days are gone. I don't think you see much of that these days anymore, but after the race is over, he puts his arm around me, and he's like, ‘Did you mean to do that?’, I go, ‘No, I’m sorry, that’s why I let you have it back’, he goes, ‘I know, I know’.

“But we were always really great with one another, him and I never had a problem on the race track. So it's nice to have guys that you can be friends with and smile with after the race.”