'Upgrading' to skinny tyres pointless for London commuting

Riding at 120psi on clinchers is for masochists, unless you're ~100kg (in which case you'd be better off running 25s at <120psi anyway).

We've done this to death in other threads.

There are no other threads. This is an amalgamation of hearsay and speculation, with a smattering of maniacal fanaticism. Reads like any other to me.