How old is your trailer? What model year was it built in?
My current Pace Shadow 10,000 GVW was built in 1999, I bought if from the original owner around 2004 and I have had to put several different sets of tires on it
I carry 3 spares (not new tires, good used ones stored in the trailer) now and replace them as soon as I can after the ones on the trailer go bad
I've weighed this trailer loaded more than once on the road at the state commercial truck scales to see if I was overloading it causing the tire issues, the most I've seen it weigh was 8660 Lbs. on the trailer axles and adding 500 Lbs. onto the truck rear axle and taking 300 Lbs. off the front axle . That was with my old pump gas Duster in it with spare tires and tools and 25 gallons of gas in plastic fuel jugs
The Braceo trailer was noticeably heavier than this one is.