The A 1800 SPLINE wheels are now available as an aero-optimized wheel tire system (WTS) mounted with the new AERO 111 tire in 26 mm width in the front and a Continental GP 5000 STR in 28 mm width in the rear. DT Swiss has engineered the ultimate aerodynamic combination of wheel and tire interface in collaboration with Continental with a joint tire: the Aero 111. Wheel and tire combinations pre-chosen and designed to be as aerodynamically efficient as possible. Tire Features:. Aero 111 tires features 48 `vortex generators` which greatly reduce drag across the entire wheel system freeing up additional wattage. Continental`s Black Chili compound and Vectran Puncture resistant technology. Wheel Features:. Affordable entry level to the aero category featuring an aero tuned aluminum rim shape paired with hidden nipples and Aero Comp Straightpull spokes. 370 series hub with Ratchet LN 18 driver. DT`s first aero-optimized aluminum rim