Tires R4s vs R1 Ags?

[nspec]

X 2 for the grooving. Did mine last year. Easy and extremely effective.

 

[k0ua]

X 2 for the grooving. Did mine last year. Easy and extremely effective.

I wish I had more snow last winter to test with.. just a little 4 incher, but the one we had I noticed a difference with the grooved R4's vs the stock or at least I think I did. I would like to hear what others that have grooved their R4's have to say.

James K0UA