i bought an old set of what i think is an oliver disc harrow. the tires are shot and not originals. i inflated them but when i lift the disc for transport its not high enough and drags down the road. i dont want to get too big a tire because from what i read when i lower to disc if the tires are too big it will not dig in correctly. anyone have any idea the tire size and/or can you identify the model and i will try to find a reference or owners manual
thank you
joe
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