We took a ATV trip earlier this week and drove out to the place almost two hours of highway driving,My speeds averaged anywhere between 60 to 75ish. Got there fine,but about 40 mins into the trip back,BOOM! Just felt a sway and rough rolling,,looked in my mirror and seen a glimpse of something flying into the air and rubber slinging. Pulled over and discovered it ripped my fender off!

The tires were in decent condition,Im not sure what happened but this seems pretty extreme,for just a blow out? I dont have much experience towing trailers,but does this seem normal?

I was reading on trailer tires,and it said the majority of them are rated up to 65mph,Now I bet I was going a bit faster,maybe 75mph max,Was this the cause of this?