I don't know about these Sailun tires but I bought a set of gently used Champiro Winter something or other, studded on rims for a steal on kijiji. Champiro are Chinese made too, right? They grip fine but the noise is horrendeous, like deafening. It's not the studs, it is a rhythmic thumping at any speed over 60 km/h. My tire installer says they are not damaged and that they are balanced. Our other family car has Tiger Paw studded tires and they are not nearly as loud. I'll tough it out this winter but that's it, even if I am getting used to it!