For my 34' 5th. wheel trailer, I have used the
Good Year G614 RST "G"rated tires for the last 15 yrs. and have not had one tire problem. I buy new ones every 5 to 6 years regardless of the condition of my old tires. They used to make a Wrangler "D" rated tire that the trailer mfg. put on new trailers to save some profit---They were useless and frequently blew out. Good Year paid to replace all four tires and moved me up to the G614, they even paid for damage to the trailer as a result of tire blow out:):)