so your little table there is not as accurate as it may seam. not all 285 70 17s are the same exact size they will all very by not only tire manufacture but also tire itself. if you put a 285 70 17 Kevlar MTR next to a 285 70 17 Wrangle silent armor and measure them out to the same preciseness as your table shown, they will be different... and the differences will very greater if you are going between different manufactures. another thing to consider is that the width of the rim will come into play as well.
no to the OP, you will need to hammer over you pinch welds, id suggest removing the plastic splash guard first then hammering them over, then pain it to cover up any bare metal you create with the hammering and the reinstall the splash cover. no i have done this, and ran a 285 70 17 for a long time with no lift, but i have a 97 SR5 with no flares. i only rubbed at full lock and full flex. i wheeled the truck and drove it as a daily driver. it worked fine and i loved the look. im not sure how much lower your truck is, as the 02s sat the lowest and so will have a harder time with clearances. i would not run spacers as it will probably cause more of an issue for you via the increased "arc" the tires will travel while turning. spacers will push your tires further out and that means when you turn your wheels the outside of the tire will be closer to the front bumper and fire wall(respectively) during the turn, and those duratracs have a pretty aggressive sidewall side lug...
read through my build thread it covers the 285 on a stock truck and shows that it works...
http://www.toyota-4runner.org/3rd-gen-t4rs/105400-rescue-runner-build-thread-5.html
incase any of you think i dont really wheel my truck. -this is a trail that should be run with at least 33s and one locker at minimum. this was done before my locker was installed or armor or lift.
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