After a confrontational race at Darlington, the NASCAR circuit heads to Charlotte for two weekends of racing. Crews have already arrived and are busy tweaking their cars in the shop, just in time for a few rule changes. According to Fox Sports, NASCAR sent out an “extensive technical bulletin” make pit crews aware of the new changes, which include shortening the side curtains of the car.

Most of the changes, though, are nothing new, and things that have already been tested.

“We actually tested that for NASCAR at the Michigan tire test, so it didn’t seem like a real big deal,” Matt Kenseth told FOX Sports “I think they’re just trying to make it a little easier to pass, take a little bit of downforce and sideforce off the cars so the lead car doesn’t have quite as big of an advantage.

“I think that’s their thought process … to try and make it better for the guys not in the lead.”

NASCAR vice president of competition Robin Pemberton assured fans the benefits of the new rules will decrease lift-off speeds and possibly keep the cars from going airborne.

“We’re still working with the manufacturers to meet the targets,” Pemberton said. “It’s not necessarily a date, if we meet the targets tomorrow, that would be great. But the fact of the matter is, we keep going back in and they keep working on the looks and we keep working on the targets. That’s been an ongoing process since last summer. So, it takes a lot because the cars are so unique in their looks that it takes a lot of work to try to achieve proper balance and proper parity among the manufacturers.”

What that means for bettors looking into NASCAR Betting Odds, it will take downforce off the cars and force drivers to carry “shark fins” on the roof.