Run-flat tires perform largely the same during regular usage and provide similar levels of traction.
However, they are much safer in case of an air loss, as the stiffer sidewalls can continue to support the vehicle’s weight and provide you with enough stability to keep your vehicle in check. While a regular tire might quickly destabilize your vehicle after an air loss, even in a straight line, a run-flat one will keep it stable.
Still, while run-flat tires do provide better stability than regular tires after an air loss, they won’t work at 100%. In other words, you will experience reduced cornering and braking ability.