Motorcycle racer ( retired) told me that he used to get better grip when he installed his tyre against the cited rotational direction. That was the 1970s when you raced with experience intuition and instinct. And a healthy dose of placebo.
An easy DIY for anyone/everyone is add FlatOut sealant to any Schrader valve bicycle inner tube. Has worked well on two of my bikes. There are solid testimonial videos on RU-vid as well. Happy riding everyone ☮️💜
I honestly have no idea what tyres my 2019 SuperlightM6LXBrompton came with? I have never used it enough to have to change any, though I have had my fun making it even lighter than original, at present close to an original T-line, but for much less money and with more gears!
When I discovered my Brompton came with Continentals I was dreading them. My previous experience with 700c has been amazing grip although a nightmare to put on. That being said I've been amazingly impressed with the Brompton Contis. Great feel as relatively easy to get on and off.