One reason is that a larger tire is similar to changing the rear axle ratio to a higher gear, which may not be a good thing on many Class C's like mine that can't stay in high gear as much as I would prefer. I am curious as to why you would consider the larger tire, if it is for weight capacity then there are new 225/75/16"C" tires available now that have a higher weight capacity rating. ~CA
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2010 GreyHawk 31SS
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