I just sold a set of swamplite 26" that I had for about 1500 miles for some Carisle ACT XL radials. I'll list what I liked and didn't like about them

Pros - They are super tough. I could take them over the sharpest rocks, broken glass, small diameter tree trunks cut at an angle so they are like a spear. These are the most puncture resistant tires I've ever seen. They look badass. They do well in the mud, and on trails. The tread last a long time. I sold them with about 1500 miles on them and the tread was still 7/8" in the center and 1" on the outer lugs and I road a lot of hardpack, rocks, mud, hills, and pavement. They do fairly well in the snow/ once they're broken in. They made my quad feel a lot more stable turning and off camber angles (very stiff tire). gained an inch of ground clearance. They should be an honest 3000 mile or longer set of tires

Cons- They are pretty heavy. for me it's a con, but this may be a plus for some, my 26" tires measured 27". They kind of suck at first until they break in at about 500 miles. I had trouble getting traction over logs, they where digging like shovels in snow. they would not grip, but more like tire hop like a drag car with bad suspension would do. They are just way too stiff at first. a noticeable loss of low end crawling power.

Over all, not a bad tire, but I can say I'm getting better traction with my new ACT radials in all conditions. I can say that my swamplites sometimes would dig too deep crossing mud bottomed streams and would hop around trying to get up steep rutted river edges. not with the new radials. they grip or spin smooth with no hop and I just crawled up a rutted steep drop off rivers edge today that I know the swamplites would have not gripped enough.
Swamplites are ultra tough long lasting tires that do pretty well at everything and blow away stock tires in the mud and most other conditions, but I think radials provide better traction than swamplites in all conditions except I haven't been able to try snow with the radials yet.

 

atv dealer told you that to get you to buy the more expensive tires. swamplites are known for running 1" larger than what they say on the tire.

That's like the dealer telling me it was $445 dollars to get my fluids changed and valve adjustment, quote "most of that cost is just the parts and only $60 is for labor." I told they guy he was full of **** and I would buy the oil and feeler gauges to do it my self for under $100. Some dealerships you can't trust more than 15% of what comes out of they're mouths.

 

mudslinger did say it all. i have 22's on my 300 and havent got stuck yet. they are an all around GREAT tire. happy trails.