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I can only comment on the Nitto NT420S. That's for low profile tires on trucks/suv's. My neighbor has them on his F-150 and has had them for 2years with no problems what so ever. The nitto's do ride harder/stiffer than other makes though. On the dune grapplers I cannot comment on. You will get more mileage out of the street tires than the duners.
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