From 265 to 245. Anyone done it?

On my 2005 TRD Offroad Prerunner, i have 265/70/16 Cooper Discover HTP, a street tire. I'm looking to get an A/T or M/T, but they are a pretty penny. I drive on the street most of the time, which brings me to a delima. I know that a 265 off-road tire would be great for off-roading, but since i rarely do, i'm wondering if a 245 will suffice? Or even increase gas mileage since i daily drive my truck.

I'm also looking a Treadwright Guard Dog or Warren. Both come in 245/75/16 with an (E) rating, if that makes any difference in ride quality or performance.

 

Anything you gain by going from a 265/70 to a 245/75 will likely be lost by going from a P-rated tire to an E-rated tire. Plus, those treadwrights are heavy tires to begin with because they're retreads. Additionally, the ride will suffer a bit because the tires are significantly stiffer.

The jump from 265 to 245 is fine, and will help with your MPGs if you stay with a similar tread pattern and load range.

 

That's a small tire, so it might look a little silly, but it will definitely improve your gas mileage.

As for offroading, you're not going to be doing anything too crazy in a prerunner anyway, so you're not losing much capability there with a smaller tire.

 

mine came with 245 dunlops and i went to 265's then to 285's, you'll gain some mpg and probably wont notice much else performance or ride wise

 

I've been reading up on skinnies too so i'll be following this and posting if i get something narrower than my 265's.