I don't have wheel spacers. I bought some but haven't decided if I want to use them or not. Looks fine without. Waiting for the snow to melt so i can get into the hills and properly test the tires. I ended up with these primarily because there were very few options available in a mud tire in this size. I was looking for KM3s but Around here I could only find these and Toyo MTs in stock. I've had the Toyos in the past and they wore poorly and very fast - they are also nearly 10 lbs heavier per tire than the Maxxis so I went with the Maxxis. They do have some road noise, however it's been a while since I've had mud tires on a vehicle newer than 1986 so they may be quiet in comparison to others. Part of me wishes I'd just done some KO2s as they are pretty quiet and I've had good luck with them. But, they are not good in muddy conditions.