Carlisle without a question. Maxxis used to have a great reputation however there have been a lot of tire failures reported on various forums with Maxxis tires the last 2+ years. Research it so you can avoid adding your name to the long list.
Last April I'd replaced 4 tires on our 5th wheel and was planning on buying "E" (80 psi) Maxxis tires until lots of researching and talking to 7 tire dealers who sell Maxxis and 3 had confirmed that they were seeing a lot more failures with the last few years of Maxxis trailer tires. So doggone glad I'd indepth researched it and resulted in changing my mind. Went with the new style same size Carlisles and what an excellent very strong tire they are turning out to be on our 12,800 lb scale weighed Carriage Corp 5th wheel!