I use grip studs in my tractor for winter. they work very well. I have chains but since I went to a cab tractor I help out my neighbors some and the chains will drive you nuts if you run down the road at all. the studs are smooth when plowing and grip very well. I have a sloped driveway thats partially in the shade and the studs are great. I looked at several different kinds of studs and went with the grip studs since they wont break off in your tire.. they are used on things like skidsteers all the way to trucks. there are alot of different sizes on the website with charts depending on your tread depth. overall i'm very happy with the grip when plowing. I have a 7.5' power angle skid steer mount plow that I used last winter with the grip studs on a boomer 3040. it kept the front end from sliding when pushing snow with blade angled and I had no problems on glare ice with them. I will be installing the grip studs this week in the new LS XR4145 .