DT Swiss partnered with world-class aerodynamicist SwissSide for a new range of endurance disc brake wheels. First to be released, the ERC1100 Dicut – Endurance Race Carbon – features tubeless carbon rims. They are 26.93mm at their widest, 19mm wide internally and 47mm tall, and are focused on aero stability and optimum performance with 25mm and 28mm tyres.
The wheels are handbuilt in Switzerland with 24 straight-pull Aerolite 2/3 spokes, butted and round for the central third, then bladed until the rim, so there’s aero benefit where it’s most useful, and more comfort where it’s needed. A slimmed DT Swiss 240s front hub body reduces the wheel’s drag by 2.5 per cent, and SINC ceramic bearings are standard. They’ll fit 12mm thru-axle and quick-release bikes, have Centerlock disc rotor fittings, and come with six-bolt rotor adaptors.
I fitted Schwalbe Pro One Tubeless 28mm rubber, using the supplied 55mm Milkit tubeless valves (5g each) and sealant syringe system. The tyres seated first time using only a high-volume track pump, and inflated to 29mm at 85psi, creating a perfect match with the rim.
Gusty crosswinds don’t cause the sharp handlebar flicks usual in less aerodynamic front wheels, just a gentle nudge. Within minutes of embarking on a seriously blowy ride, the cockpit remained calm.
A fast local descent that’s usually a nerve-shredding affair in strong wind was dispatched with confidence, reassured by controllable handling. Heading downwind, the speed shot up, and the tubeless tyres began to sing, but the wheels felt oblivious to the shifting breeze. Turning in to a block headwind helped me to appreciate the ERC1100’s accelerative ability, as well as its aerodynamic stability, proving as quick as anything I’ve ridden in such conditions.
Performance is accentuated by the benefits of wide tubeless tyres. Larger volume with better supported sidewalls creates a wider, shorter contact patch with the tarmac, reducing rolling resistance while increasing grip, and reducing the chances of pinch flats. This allows lower pressures that increase comfort, and with less weight than a tyre and inner tube, which results in a general speed increase everywhere.
The rim’s rigidity and build strength make for a stiff and dynamic wheelset, suited to all kinds of ambitious use, within its 120kg system weight limit. At 1496g (without rim tape) for a wide, 47mm-deep rim, it offers a great balance of all-round performance and weight.