Soil condiations plays a major part on what tire set up works or don't work.
I have one Cub with a dual (149) and one without a dual (100) on the land side that I plow with. Both have 23-8.50-12 tires (Power Tracs). There are times that the dual on the land side doesn't touch the ground......When it does you know it. When the soil has a hard surface the dual tire does little work. If the soil has a soft surface both tires on the left side will do the job. My 100 with a 10 inch plow will bury the rear tires on soft soil if you don't watch what you are doing.
I have plowed without a dual on my 149. There were times when I wish I had the dual on.
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