I got Goodyear 235/75/R15 tires on my 1995 Ford Ranger 4x4. I got a flat so I looked on the door panel drivers side, it said 265/75/R15. Is it ok to have those tires or should I have the ones on the door panel on the truck. I bought the truck with those on the truck.

 

235/75/R15 is 29" x 9.3"
265/75/R15 is 30.6" x 10.4"

So your speedometer/odometer would be off a bit with the 235's
Its about a 6% difference, speedometer at 60 you would be going 64mph
But Fords speedo/odo allows for +/- 5% so may not be off at all, lol

The 265's would be more expensive to buy and have slightly lower MPG, i.e. heavier and wider
But would have better traction, i.e. wider
Also 3/4" more ground clearance, lol