If the dealer has a tractor I like with R14s, I'll probably take it. Have had R4s on last 2 tractors and absolutely NO tire problems.Ralph, one thing I'd recommend you assess is the speed/gearing of the LX2601. Youtuber Gordon up in Canada replaced his B2601 for the cab model LX and has complained how slow it is in comparison. Now, he has a cab and the extra weight may be the issue, also with hydro wine noise which also bothers him. I stay in low range and it's about right for my hilly conditions and small open spaces but if it were slower it would bother me.
I got the R14 tires with my B2601 and like them. Traction is good, and they do not tear up the grass unless I am in 4WD and cut too sharp. My only doubt is whether I should have gotten the rears loaded. I don't drive on the grass when it is really wet, so they have not rutted. However, the weight does seem to discourage grass unless there is a heavy sod.