Bigger rim widths improve cornering by reducing a tire’s tendency to roll on the rim. It also provides additional support to the tire sidewalls at lower pressures. Carbon fiber wheelsets are able to give you a bigger rim width without it being too heavy as compared to aluminium wheelsets.
Also, a deeper rim depth has more aerodynamic qualities as compared to shallow rim depths. Deeper rim depths have smaller holes inside the rim, allowing it to minimize air separation over the surface of the wheel, keeping airflow attached longer.
Bigger rim widths and deeper rim depths also mean heavier wheels. Thus, most riders will choose a carbon fiber wheelset if they are looking for bigger rim widths and deeper rim depths.
Check out Minimotors SG’s ICAN AERO 50, a carbon fiber 50mm rim depth disc wheelset!