for experimentation sake i took my hot glue gun and put small thin lines across the track pads on the tracks and took it out for a spin. the difference in traction is like night and day. alot of the areas it would sit still and spin the tracks on before it blasted right over. so adding something to the tracks is gonna be a must. as i said before i am going to buy a second set of tracks and have a winter set and a stock set for summer. as far as tracks to use in the summer (grass, dirt, and gravel) would another set of stock tracks be fine or would the metal tracks provide better grip. and if i got metal tracks would it require any upgrades to the tank or can the stock tank just use metal tracks?