Will these tires fit on my 1993 pickup with a 4 cylinder?

31x13.5x15

 

I'm gonna go with yes.
These trucks came stock with 31x10.5R15 tires with stock wheels (4.5" backspacing).
I've heard and seen guys run 31x12.5R15 tires. I'd image the extra 1/2" on either side can't hurt.
If it rubs, break out the hammer.

 

I know 12.5 wide will... But even then they still rub slightly... not sure about 13.5... i would question that on a stock set-up...

 

you can make them fit.... but why? worse mpg?

 

Who makes a 31x13.5 tire? Sounds like a weird Interco size

 

Apparently you didn't search. there is a whole thread dedicated to "will these tires fit on my truck"

 

Might rub in the width department.

 

Ive never heard of 13.5 width tire, who makes it?