Can I put 108H load capacity tires on my Toyota Tacoma that is rated for 111S capacity tires?

My Tacoma is a 2001 SR5 4x2. I don't ever tow anything. I actually don't even have a hitch. The 108H is already rated for more weight than my truck can carry. I may just be ignorant when it comes to tires, but it seems to me that a 108 would carry my truck just fine (especially without towing). I was told by the tire shop that I couldn't do it, but it seemed like he was just trying to get me to buy new tires. Any help or explanation is much appreciated.
Asked Apr 09, 2014

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