Nankang SW-9 285/50R20 116Q XL #SW9-2855020-116QXL

190% stud quantity(actual stud quantity depending on tire size) compared to Nordic regulation can enhance ice performance(it's 170% for its predecessor SW-8). With qualified Nordic Overrun test results, SW-9 is assured its caused damage on road surface can meet regulation requirement. Optimized stud location allocated per stud lines enables each stud to rub efficiently against road surface to improve traction on icy roads and upgrade ice performance. Unique resembling triangle shape stud carbide design has bigger ice friction than normal round shape stud carbide to improve ice performance. Multi-groove design on tread center contributed to snow-packing pillar can enhance snow performance. Unique groove bottom design can grasp and embed ice/snow, bringing out snow-packing pillars with limited displacement and deformation to upgrade snow performance. 3D sipe design adopted on tread shoulder blocks can make block with less deformation, retain block stiffness and supply handling stability during driving. Complete depth design on tread shoulder grooves(same as center grooves) can provide sufficient volume for accommodating snow to keep grip on deep snow. Ice braking for SW-9 is 11.6% better than SW-8. Snow braking for SW-9 is 3.4% better than SW-8.