Onboard with Jon Barnes driving a lap of Estoril Circuit in a Caterham 420R (McMillan 7 Race Series specification on Toyo R888R tyres). 
21st November 2024. 

Lap time: 1m48.11

This is a lap on used Toyo R888R tyres as a reference / car setup assessment for one of my coaching customers. As you may be able to see from the video, the car was particularly difficult to drive in left handers, indicating a problem with the right front or right rear suspension / ride height or corner weights.