The 01 Navigator 2wd has 275/60-17's. Can't find this size with a LT rating so I am looking at 245/70-17. About 0.5 inches taller according to specs. The stock wheel width is 7.5 inches. Ok or too wide for the 245's? Is going to LT's on this vehicle a very bad idea?

 

Lts will last longer, they have a harder tread compound and more plys meaning they can carry more weight with less heat buildup, only downfall I see is they are stiffer so they do ride a little rougher than a p series.

 

Kind of what I thought. And the speedometer may be a little off. But I'll take that over flats any day of the week.