calculating tire size?

[leenjen]

right now i have the factory 15" rims with the factory tire size (i think 235/75). i want to put 80 or 100 spoke 17 or 18 inch rims on. but i dont know what tire size to get. if i get the wrong size, the speedometer will be inaccurate (and where i live, the cops patroll aggressively in big expeditions).

does anyone know the correct low profile size for 17"/18"??

 

[Bill Kemp]

Check out www.explorerunderground.com
They have a tire size computer that will help you out.

 

[tbomb]

ive never used the one at explorerunderground, i use the one at www.4lo.com - whichever floats your boat.

 

[leenjen]

thanks

thanks guys, both websites are very helpful.
i knew somebody could help me.
thanks again!