A good tire should last 8-10 yrs. That is the issue with the LT rated 16" stock tires, everything I here is they give out after only 2-3-4 years. That is why the investment of the 17.5 seems totally worth it. Plus the danger and the damage of a blow out is greatly reduced. With my business I buy a lot of tires and I always go with the highest rating possible.
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