* Your vehicle's owner's manual: This is the most reliable source. The sticker inside the driver's side doorjamb (often near the latch) will also usually list the recommended tire size.
* The tire sidewall: The tire size is printed on the sidewall of your existing tires. This is useful if you haven't changed them.
* Your vehicle's build sheet (if you have it): This will specify the original equipment tires.
Without access to one of these sources, I cannot definitively tell you the correct tire size. Several sizes were likely offered as options for the 1995 Ford Ranger XLT.
