Not sure if you already bought tires by now since I'm replying so late to your post, but I am sure you could install those tires on your truck. I had 245/60/16s (I think) on my truck from the previous owner and I didn't have any troubles. And I drove those tires for 5 months before buying new ones. I even put them on our work SUV after. And they were just a passenger tire as well. Lionheart tires. You should not have any trouble with it.
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