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1st EWS victory for the 97.5 format (27.5 at the rear / 29 at the front)Road bikes: all you need to know on disc brakes

Customer evaluation

Maxxis Beaver Tyre – EXO Protection – Dual 62a/60a – Tubeless Ready

Roc des Alpes Marathon 2016

Tested in real life conditions at the Roc des Alpes Marathon last week-end. This tyre delivers in liquid or greasy mud. Great yield, no loss of traction, it got me through all kinds of trouble even in the toughest spots. Rather narrow (2.00), but no problem, even in rocky downhill sections. Very easy to mount on my MAVIC Crossmax SL

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Following Charles Goodyear’s invention of vulcanisation in 1839, and John Boyd Dunlop’s  first bicycle tyres fixed to rims, Edouard Michelin invented in 1891 the first modern removable bicycle tyre “clincher”, with beads and inner tube. In 1999, Mavic, Hutchinson and Michelin jointly developped tubeless mountain bike tyres. Road tubeless tyres, developped by Hutchinson and Shimano, are much more recent (2008). Most MTB tyres, and some recent road tyres such as the Vittoria Corsa Speed, are “tubeless ready”, with a tubeless bead, but requiring liquid latex to be added to be air tight.

A bicycle tyre is made of three parts: 1) the bead, in steel for rigid or wire bead tyres, in kevlar for folding bead tyres, 2) the casing, whose density is expressed in “tread per inch” or tpi. The higher the tpi, the more souple and dynamic is the tyre. The casing can be in nylon, polyesters, cotton or even in silk on some high end tubulars 3) the center tread, whose compound hardness is expressed in Shore. The lower the Shore, the softer the compound.


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