NASCAR legend Dale Earnhardt Jr. made a stunning prediction regarding the value of Cup Series charters ahead of a recent legal settlement between the stock car racing series and two of its teams.

After being sued last October, NASCAR came to a settlement on day nine of their antitrust lawsuit with 23XI and Front Row Motorsports on Thursday in a seismic day for the sport.

As part of the settlement, Cup Series teams will now have 'evergreen' or permanent charters, offering greater financial stability and making them a much more appealing proposition for investors.

In the prior agreement, Cup Series charters only lasted as long as the current Cup Series charter, which is only set to run through 2031.

READ MORE: Dale Earnhardt Jr reveals how NASCAR can fix relationship with 'p****d off' fans

Earnhardt Jr. predicts $150M charters

In light of the news, NASCAR insiders and executives have already predicted that the charter values could rise as high as $100 million.

However, speaking on his Dale Jr Download podcast before the settlement was agreed, Earnhardt Jr. stated that he believed granting evergreen charters to teams would put their value somewhere in the region of $150 million.

“If the charter remains nothing more than a guaranteed entry into a single event, I think then values remain where they are today,” Earnhardt Jr. said.

“What the teams have recognized is if those charters were to become permanent and therefore basically a franchise, the values are well north of $150 million.

"So, you’re sitting there with a charter that’s worth, let’s say $25 million, and by the stroke of Jim France’s pen, it will now be $150 million.

“If that happens, there is no going back. It changes the sport forever,”

READ MORE: NASCAR insiders issue verdict on shock Joe Gibbs Racing exit

New barriers to entry

Whilst the above is great news for the current Cup Series owners, Earnhardt Jr. raises the point that there is now a significant barrier to entry for any teams that would have hoped to join the Cup Series in the future.

Perhaps he had his own team - JR Motorsports - in mind. They currently run in the O'Reilly Auto Parts Series but have made no secret that they'd love to go Cup racing one day.

“You’ll basically have 36 franchises," Earnhardt Jr. continued. "However many cars start a race, they’ll be the franchises, owned and valued, and they will sell and trade from one entity to another over the course of decades and centuries, however long this goes.

"There’ll be a gigantic barrier of entry.”

READ MORE: Hendrick Motorsports under-fire after latest NASCAR driver announcement