Winter’s coming and roads are bound to get icy.
Just recently, Schwalbe introduced 16″ x 1.2 (ISO 349) studded tires. 72 carbide studs will maintain traction on icy patches and keep you moving along confidently. Moderate tread will grip through the sloppy stuff.
These will keep your Brompton or other small wheeled bike sure-footed when the roads get slippery.