Hello! Newbie here. I have not found a way to search the threads yet, so I hope I am not starting up an old topic. I just got a job as a caretaker where I do a lot of road work, mowing, and some backhoe work. The Kubota M9000 that the club owns has R1 (ag) tires. I have 18.4-30 on the back and 12.4-24 on the front. I would like to put R4 (construction) tires on it for all the road work I do. Any suggestions? Thank you in advance!