As well as 700c and 26in sizes, Schwalbe’s virtually impregnable Marathon Plus comes in 24in, 20in and now 18in and 16in too: great news for Birdy and Brompton owners.
A Brompton rear wheel is tricky to remove so the ability to ignore thorns and bits of glass is handy. The thick, springy SmartGuard rubber sub-tread adds some weight – around 200g over a Kevlar-lined Brompton tyre – and the tyre doesn’t roll as quick, but it’s tough and grips well in the wet.
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