I have a stock (uncorked) BRP. It's running on the stock Dunlops (k490 front and k695 rear, 110/100 rear) It sucks in the sand. I'm going to put on a D756 front tire (the spikey one) and I'm undecided on the rear. My terrain is mostly hard pack and sand, California Desert terrain. I was thinking a 120/100 rear, but don't want to rip off the mud guard. Is there something that will hold up to 500 mile of off road use? (5 rides) My K695 is pretty much 1/2 worn at 2 rides (120 miles). The front is looking new, but washes out a little too easily for me in the sand (ok, it sucks) Also, the 110 K695 rear can't get decent traction in the sand, probably because it's so narrow. Any ideas for the rear? Thanks.