Shrew is correct that bias tires typically have a higher load capacity. Depending on how long the boats sits between use bias tires can develop flat spots that will result in a bumpy ride until they heat up and even out. It realy comes done to how close the tow package come to tire capacity on if radials are an option. Of course getting another trailor wit an extra axle will distribute the load for a price;-) Also the flex in the radial side wall will provide a smoother ride for he boat, but only if the tire capacity is less than the tow weight plus a little margin.
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1997 Silverton 362, 7.4 Crusaders
1997 2400 SCR, 5.7 Vortec / Bravo 2
Mike
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