Chris Froome once again criticized the performance of disc brakes on road bikes in a YouTube video filmed during his latest training camp in Gran Canaria, focusing on the unsolvable problem of disc rotor "rubbing."

Chris Froome was training in Gran Canaria with his Israeli Premier Tech teammate Mason Holleman before his season debut at the Settimana International Coppi e Bartali 2022.

The training camp episode (opens in new tab) begins with the sound of loud disc brake rubs from Frum's bike.

"My entertainment with disc brakes continues," he jokes, perhaps knowing that his doubts about braking technology always cause a stir.

He then devoted a small portion of the video to a more in-depth explanation of the questions surrounding braking technology.

"I think it's still in its infancy.

"I think the technology is improving, but the margins are very small," he said of the clearance between disc brake pads and rotors.

"If you do a big descent, the alignment moves completely.

Froom uses the previous generation of Shimano's top-of-the-line groupset, the Shimano Dura-Ace 9170, but emphasizes that the latest Dura-Ace 9270 has wider pad clearance.

"I ride Shimano now. I'm told that the new 12-speed Shimano has solved some of these problems. One piston fires more than the other, which constantly throws me out of alignment."

Froom also suggests that there is no easy mechanical solution to rotor chafing, but rather that it is an intrinsic problem.

"No matter how many mechanics you talk to or how many times you take the bike in for repair, it's never 100% solved. When you start riding down a really big descent, there are always going to be a few problems.

"But that's life. For now, just put on your earphones and pretend you can't hear."

Froom has spoken out about disc brakes before on his YouTube channel, and last year he took the cycling technology world by a small storm when he released a video heavily criticizing disc brakes after the transition to them.

More recently, he has also used his channel to question whether time trial bikes are appropriate for road cycling in light of various training crashes in recent months, including Egan Bernal's big crash in January, which sparked controversy.

In other recent episodes of Froome's recent episode in Gran Canaria, he discusses his training journey so far this year, starting at Settimana Coppi e Bartali after a knee injury in January interrupted his season preparations, finishing 86th overall. He finished 86th overall.

"I'm a little behind this year because of the injury," he commented optimistically.

"My legs are feeling good and I am starting to see progress from last year's numbers.

The next time Froome will race will be at the Tour de l'Alps, which begins on April 18.