I fitted Tannus tyres to my Brompton just before Christmas, having been assured that I would hardly notice any difference. I cycle 12 miles to work 3 mornings a week and was looking forward to no longer having to worry about punctures. Cycling home from the workshop, I thought I was struggling a bit, but it was an unfamiliar route so I didn’t worry.
The next day I set off for work and after a couple of miles, thought I had developed COPD - I was gasping for breath. I arrived at work exhausted. Even the slightest incline felt like the Alps. I began to wonder if it was the tyres. Over the next few weeks I continued to struggle and began to hate my commute. Yesterday, I finally had the Tannus tyres removed and a set of Marathons put on. Today, my cycle to work was a dream. I felt 10 years younger. Good riddance to the Tannus tyres, I say.