Tires, my thoughts on tires, have popular size as 11R22.5, not 12R22.5 and keep good tires, not OLD nor patched many times, keep eye on air pressure. Tires have never been an issue for me. On the MC7, it came with the 12R22.5, being cheap, I went to the 11R22.5, no like that due to small diameter, so switched to all new steel 24.5 rims with new 11R tires, made the mistake of running a standard truck drive tire on drive axle, with the larger engines, it wore the treat to a saw tooth looking pattern, switched to a steer tread, no more goofy wear pattern, yes I put many miles on it over 20+ years and never an issue on the road.
If you keep your head clear, take care of the Kill items you should have a fun trip not waiting for road service that might put a big dent in your credit card, removing all fun for the trip/vacation. THINK.
Dave M