LAN丸 5 Bought them to install on my summer tires to go to Hakuba. It worked perfectly in the molten muddy snow, fresh powder and icy road. You can feel vibration on lower speed, but if you go at around 45 km/h it becomes less annoying. Just keep your speed below 50. Otherwise great purchase. Metallic spikes were fine after driving on asphalt as well, after the trip they looked like new. Very satisfied.