The spacers really helped with the stability and I don't get too much more mud on me than stock. I'd do it again. BTW outside to outside of the rear tires is 45" now.

 

I HAVE A 2007 WOLVERINE 450 AND I PUT A SET OF 27 INCH VAMPIRES ON IT AND ITS UNSTOPABLE. THEY WILL RUB JUST A LITTLE IF YOU HAVE IT TURNED ALL THE WAY AND HIT A HOLE AT THE SAME TIME BUT IF YOUR JUST RIDING I NEVER HAVE A PROBLEM.