I’ve had three punctures in eight months. All of these have been on the way to or from work, rather than when touring, but I really don’t think that’s a great strike rate. Furthermore, although I have become much quicker at changing an inner tube (all three were the back wheel too), it is still something that I would prefer to avoid doing at night, in the rain, beside a busy road (yes, I know that is the worst case scenario).
My Brompton came with fitted with Schwalbe Marathon Racer tyres. These have a lower rolling resistance than Schwalbe Marathon tyres, and they are more durable than Schwalbe’s Kojak tyre (which is also an option on new Bromptons), but my own experience over eight months suggested that the Racers are not as puncture resistant as I would like.
Therefore, I decided to switch to Schwalbe Marathon tyres, to see if things improved. Time will tell … I’ll report back after a few hundred commuting and touring miles.