I have chains for my 3020 and my skidloader.. HUGE DIFFERENCE with chains then without.. Esp if you have had a snow and it has packed down on drive making it slick and you get more snow to clear. I try to clear my drive without moving the rock base leaving a little snow on top. Prob is when it gets packed it gets slick and with more snow ontop tractor and skidloader slide around.. I use my skidloader the most for snow removal just because I can scoop, move and pile. Chains on the rear tires only on skidload dont need on front.
I made chains for a old lawn tractor that I keep on year round only to have traction in wet conditions and dry conditions.. Keep it off pavement though..