A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
the Grabbers are 205/75R15 and will fit fine, but as mentioned you may as well run these all year and just use your existing rims, as long as you don't mind losing a few mpg.
however, if you're serious about playing in the mud, then it's worth the gamble to see if the Kumho's will fit as there's a chance they might - and anyway mud spray along the side of a Jimny always looks good. :lol: