Swashbuckler

I just put on some 315/70/17 (35x12.50/17) Hankook M/Ts on my truck. I'm trying to adjust my Edge tuner for the new tire size. I'm using level 3 with the custom option. when I go in to the 'tire size' option it has the number 2,300 (mm) and an up or down arrow.

Now I googled 35 inches -> millimeters and it's showing me 889 millimeters.

so what the heck do I set the evo to?

Charles-F150

if you check out your evo manual there will be chart telling you what size your tires are

ford4wd08

well thats the correct conversion, one inch is 25.4 mm, so what to do from there im not sure lol

GATORB8

Might be the circumference and not the diameter

889*3.14=2791.46

Swashbuckler

yeah I figured it out shortly after posting this...teach me to not RTFM.

thanks though

dilloncawthon

also you will have to subtract the squish factor. for me it was 3% i think. so multiply the number that edge gives you buy .03 then subtract that number from the number that edge gives you. that should make your speedo more acurate. it helps to use a gps to check it too.

shotgun

Or simply multiply the number by .97

ford4wd08

i read that reply and thought the same exact thing

dilloncawthon

haha yall can hush. idk why i didn't think of that lol. i've just always seen people explain it like i did but yeah that way is a lot quicker. just multiply the number by .97,.98,.99, etc. and check with a gps or some other way until you get it right.

shotgun

It's Sunday night and every one wants to have a little fun before Monday.