Westlake trailer tires are nicer trailer tires and would not have issues associated with what you mentioned. Especially the Westlake T235/75R15 Radial Off-Road Trailer Tire # WST54FR that you referenced. This is a really nice tire with an off-road pattern and also a great warranty. These are made in China, but that's basically the norm now for all trailer tires.
I attached a review video for this tire for you to check out as well. view full answer...
According to Dexter your 2021 Little Guy Trailers Mini Max Travel Trailer has a #9 Torflex axle. The correct bearing kit is the # BK1-150. This comes with # L44649 bearings and a 10-60 grease seal like the # RG06-020. view full answer...