But is he correct to say that wider tyres equal better performance?
That depends on which wider tyres, and what performance. There are a great many rides where a wider tyre will require less total energy to complete the journey at a given average speed, so he is, as I said, half right.
That depends on which wider tyres, and what performance. There are a great many rides where a wider tyre will require less total energy to complete the journey at a given average speed, so he is, as I said, half right.