June 2019; purchased a brand new Pioneer 700-4 which has a severe vibration at low speed (3-7 mph). Have been told that it is "normal" even though the unit has a rubber mounted engine. Honda service manager has told us that Honda thinks it is the high tread tires that Honda put on the unit. Now we are responsible to purchase better tires ($500.00) after we spent $17,000.00 on the unit.