Wonder why the front wheel came off?

Quote
The documentary also reveals the full details of the crash for the first time. Flintoff was driving a three-wheeled car around the Top Gear race track when one of the front wheels came off.

Flintoff says he wasn’t going particularly fast – 40 to 45 miles per hour, he estimates – so he wasn’t wearing a helmet. It was a potentially fatal scenario, but when the car began to roll, his cricketing reflexes kicked in.
Per https://www.telegraph.co.uk/cricket/2025/04/24/flintoff-part-of-me-wishes-i-had-died-in-crash/

M3W5sp 2015, MSCC, MTWC, Oxon UK