I spent about an hour with Mark from Sand Tires Unlimited at his shop in Temecula, Ca a couple days ago picking the wizard's brain on set up for the XP1K4 as I just bought mine a few weeks ago and want to be ready for the first dune trip after Christmas.
His opening statement was, no surprise, "It depends HOW you drive and WHERE you drive".
We talked about duneability, hill racing and drag racing as all types of driving preferences. I was most interested in the set up for best duneability for Glamis. He mentioned that Oregon requires more paddle for the same performance...that's how tuned in this guy is to the sand world. We didnt talk about Dumont, Idaho or Utah. Sorry to those of you in those places, my bad.
He took me through sand tire technology and the difference between a street tire having traction and a sand tire having weight displacement properties as opposed to traction. It was all very fascinating.
Once we got down to the meat of it all, he suggested that he was still in the process of doing his own testing to be 100% sure but he was leaning heavily to the following for a great duning experience;
â—Ź28"X14" Sand Blasters with the #1 paddle being stagger cut at a 60 [paddle]/40 [cut] ratio (75/25 for the 2 seater) and given the comp cut treatment. (Comp cutting is the process of taking off most of the rubber between the paddles so the cord is nearly or lightly exposed to lessen the rolling weight by about 7 lbs per tire. Please note that this is an expensive option and might not be for everyone's wallet)
â—Ź28X14 Razor Backs for the front.
One other note, and this is particularly important from a safety standpoint, he mentioned that having the tallest tire(within performance limits) was important because the Rzr1000 will drag the underbelly if the suspension AND the tire is fully compressed on a hard landing. Once those two are compressed the only things left to compress are your seat and your back and that is NOT a good thing.
I hope this helps some of you. Personally I just have to figure out how to tell my wife im going to spend another $2500 on rims and tires for the dunes.
Happing Razoring to all and to all a good night.