After I added spacers to the front it did sling more mud but I think that was more from the aggressive tires than the width. I added mud busters to the front and back and now I have less mud and water on the hood and windshield than I did stock. Adding spacers to the back will definitely make a big improvement in the ride and stability with no negative affects in my opinion. One nice thing about using spacers rather than wheel offset is that you can play with the width some and figure out what you like best. I originally started with 1” rear spacers and liked that. I found a good deal on some 2” spacers and moved the 1” to the front and installed the 2” on the rear.I'm considering having mine wider in the rear; trying to keep the fronts from throwing as much mud. Thoughts?