I have another question about my tires. Before I buy the new 285 75 16's I want to make sure they will fit on the stock rim which now has on 155 70 16's. Will the 2nd number being different make it not fit on the rim? This is probably a dump question but I need to make sure.

 

are u sure they are 155..or 225 lol..155 is smalllllllllllllllllll!!! but the second number is how wide.. it wont matter it will be just a bit wider.. you should make sure they fit on your truck meaning they dont rub or touch when turning ..im not sure if there is anything different between a 1995 and a 1998 but mine fit perfect.

 

the first number is how wide. the 2nd number is the height from the top of the rim to the top of the tire and the last number is the rim size.

 

Yes I meant 255. My bad. And thanks for the help!!

 

To get super technical about tire sizing, check out this page, it's very descriptive.

Courtesy of Tire Rack