Re: What tire size?
Well, Heather, I'm running 31's with the Calmini 6". I had to "hammer back" the driver's side front wheel well. Passennger side never did rub - go figure. Because I live at 9,000 feet elevation, my Kick doesn't have as much power as you do in Idaho, most likely. I DEFINITELY want to regear, and hopefully, my next set of meats will be 33's!
Here's a trick - ZukBoys fender flares for a Samurai will ALSO fit a 2-door Sidekick, and they give you 5" of flare on the outside, and extend 8" INSIDE the wheel well. Just a matter of time, until I get a set. They won't work on the back wheel wheels of a 4-door, because the back doors are so close to the wheel well.