From a 255/70R/16 to a 265/75-16

I am lookin at buying some Blizaaks for the Expy.. just worried about rubbing.

the 265s are just a little wider and taller.. but just wanna make sure...

about an inch and a half taller if you go 265/75R16 this site is pretty cool
http://www.miata.net/garage/tirecalc.html

Yep, inch and a half larger diameter, half of that will be below the rim riasing the vehicle up. That will make your speedo and odo about 5% lower than you are actually doing.

But they will fit any Expedition, no rub.