Originally Posted by gofastbobby
fwiw, ass-u-me-ing that you have stock wheels, i wouldnt go with anything wider than 265. with 285's you won't get the mileage out of the tire that it is capable of.
I dont know what kind of load you carry, but if your going for weight bearing (as in 10 ply) the bigger tires usually have a higher load rating - like comparing 245/75 vs 285/75. However as stated above the 285 will probably be too wide for a 6.5 inch rim (standard width on light trucks that come stock with 245/75).
For me I needed weight rating, SRW sidewall anti-wallow type thing. Was going to replace the 245/75s. 285s were too wide, Ive done that before - looked neato on the truck and rated for a lot of weight (~3800/tire I think) but was not right and probably not a good idea when you plan on running close to max poundage.
Was going to go for 235/85s but went with 265/75-16s. I think they're about the same height as the 235/85, slightly wider, and they're rated for an extra ~500lbs capacity per tire. (~3600/tire as opposed to ~3200/tire) Also much bigger variety of tires available in 10ply rating for 265/75-16.