I'm looking for a web site that shows a picture of different size tires next to each other for a proper comparison.

I wonder if it's worth it to swap out my P275-65-R18's with P285-60-R18's. I do not intend to put in a lift or leveling kit. It would really be nice to see them side by side to see if it's worth the $.

 

Dusty...you didn't indicate whether your objective is a WIDER tire or a TALLER tire. In the example you gave, the 285 will be 10mm wider (slighter wider than a 9mm/.38 bullet), but 7.75mm LESS TALL than the 275/65. If y'all go to any tire manufacturer's web-site, you can find the tire dimension info you're looking for.

Without doing that, you can crunch the numbers yourself if you understand what tire size numbers mean/translate to and their relationships. For example (keeping it simple), 285 is the distance in mm through the sidewalls (width of the tire), 60 is a % figure that translates to sidewall height, in this case 60% of the 285 (the sidewall heigth) is .60 X 285=171mm. Convert mm to inches, multiply by 2 (there are 2 sidewalls, top and bottom), add the tire diameter (18 inches or whatever) and you arrive at total tire height) plus or minus depending on tread thickness, etc.

 

Grimalkin,

Thanks for pointing out my error. I am looking for the tallest and widest tire that can be installed without the need for a lift kit. That's the bottom line. That second number always screws me up, as it's a ratio of height to width.

Before I spend the money, I just want to see a picture of what I have now and the new tire next to each other so I can see if it's really worth spending so much money.

Thanks for your input!