check out this tire/speedo correction calculator. it can't be right can it? http://www.offroadexchange.com/speedo.htm

dsm/mitsubishi service manuals https://www.mediafire.com/folder/5k14qlaulb9s1/dsm_mitsubishi

service manuals(my whole collection) https://www.mediafire.com/folder/ac51jwwa3g1n1/automotive_manuals

says going from 205 55 16 to 225 40 18 adds about 1mph. i'd say that's a bit off. usually adds like 4mph i beleive. that calculator is designed for big ass truck tires though.

http://www.ocaddict.com

thanks beefgg for the sig

it says that by going from my 14's to my 16's, when i'm going 100 its really 175. shouldn't it be when my speedo says 100 i'm going 104 and some change?

dsm/mitsubishi service manuals https://www.mediafire.com/folder/5k14qlaulb9s1/dsm_mitsubishi

service manuals(my whole collection) https://www.mediafire.com/folder/ac51jwwa3g1n1/automotive_manuals

what tire sizes did you put in? i think i used 195 65 14 for 14's 205 55 16 and 225 40 18

http://www.ocaddict.com

thanks beefgg for the sig

my car came with 185/70/14 now i have 225/55/16

dsm/mitsubishi service manuals https://www.mediafire.com/folder/5k14qlaulb9s1/dsm_mitsubishi

service manuals(my whole collection) https://www.mediafire.com/folder/ac51jwwa3g1n1/automotive_manuals