Tire tread is gone in one section!!!

Returning from our trip, We decided to call it the night before continuing out journey back home. When we pulled in the RV park I notice that one of my tires was losing air, so I told the DW, well let me change this tire now because I am not going to feel like doing this in the AM. When I took the tire off it looked like some one ripped the skin off in one section. ( like you peel an orange )I said to the wife, looks like we need a new tire. Now Lets back track a bit I recall the DW asking me ,don't you think you are going a little to fast while towing? I just looked at her and said. Nah it's ok, well call me every name in the book because I deserve it. I was going a little to fast ( 70-80 ) at some times. Now one gentlemen at the RV park was watching me changing the tire and he told me that this tires are meant to go only up to 65MPH or less. Is he right?:o Which brand is the best tire out there please advise to this person who should of listen to his wife. :o