Round profile with micro-siped knobs and carbide studs for traction on iceWorks best when run at minimal pressure but can be used at full pressure on non-icy roads with minimal road noise*To ensure proper spike seating the tire should be run for roughly 25 miles on asphalt while avoiding fast acceleration or hard brakingSGRD - Smartguard equipped tires feature a 5mm breaker belt made from special Indian and partially recycled rubberTWN - An additional rubber coating on the side that protects against cuts and abrasionsStudded700x35622WireBeltedBk/Bsk7091067SGRD/TWN/REFYes240UPC/EAN/GTIN: 4026495849852