Mine was a 92, but my dad had a 91 nite reg cab short bonot flareside) 351 auto and had stock 235/75r15. I found it weird that mine came with 265's

 

My mom's 95' F-150 5.0/4R70W ext. cab short bed 4x4 has P265/75/R15 door sticker on it.
My 96' 5.8/E4OD ext. cab short bed 4x4 has LT235/75/R15 door sticker on it.
Mine has the max tow or whatever package, hers doesn't. Might just be based on various options.

 

Ok now that you say that my dads truck had the tow pkg and mine didn't. My current 95 ha the yow package as well and has the 235 stock