“I’ve been speaking to the people who made it in Italy originally and, sadly, they don’t produce them anymore,” Mr Sheppard added, referring to the wheel.
“We’ve got to go down the road of getting one bespoke made.”
The engineer said visitors also climbed over a second historic F1 car on display.
“We had a Forti, another 1996 Formula One car on one of the other stands, and people were just using it like a climbing frame,” he said.
“People doing things like this, sadly, it puts a sour taste in your mouth.”
About 500,000 people visited the circuit over the weekend, which saw Lando Norris win the British Grand Prix for the first time in his career.
A total of 34 crimes were reported during the event, including theft, criminal damage, assault and drug possession, police said.