we have a new to us jd9400 4x4 with 710/70r38 with 1 205kg on each rear and 20 suit case between fenders,and none on the front. its only gonna pull a jd 980 30ft.field cultivator what air pressure can i run that will cause the least compaction? and then what would u use in the fall pulling a jd 512 7 shank or a 15 shank glenco soil saver? jd dealer said do what the tire says but it only gives a max for seating bead

thanks

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