I look at tire rack, and see 17" wheels with +15mm offset which would seem closer to where I wanna be, and apparently they'll fit, but then others here say no. Go to methods site, they have others with 0 offset that'll fit. I'm gonna spend forever confusing myself.
This is 15 offset and 35x10.50r17…tires narrow Enough to just, perhaps, fit under the fenders at this wide of an offset. I could probably fit 285’s (11.22”) wide tires if I rolled the fenders.
The following is not an exhaustive comparison of wide vs narrow offsets. And I may be incorrect. But based on my reading:
Wider offset can theoretically cause your vehicle to dart into puddles but also adds a benefit of being more stable.
Narrower offset will sort of stay the direction they’re pointing when in a hydroplaning situation but will make a vehicle more tippy.
You might think of it like walking through a tiled house barefoot…put your feet wider than shoulder width and you’re quite stable…but step on an oily patch and your foot darts that way and you fall down (wide offset).
Shuffle through the tiled floor area w feet right under you close together (narrow offset) and even if you step in an oily spot, your feet aren’t going to dart out from under you…but if you trip on something, youre less stable so more likely fall to tip over.
Walk w your feet at shoulder width (optimum scrub radius) and you somewhat reduce chances of slipping should you step in an oil spot but also somewhat reduce the chances you trip on something and tip over…
Since we aren’t Toyota engineers, we may not be able to ascertain what optimum scrub radius is, however…we know what they run (60 offset for a 31.3-32” tire and 50 offset for a 32.8” tire), but we don’t know how much the parameters were driven by being less tippy vs less slippy…or how much tucking the tires into the fenders for fuel economy may have come into play…or any other variables I (as a non engineer) cannot think of.
Further complicating things: Within the offsets we are considering, the differences may not even be noticeable (1” wider than shoulder width vs 1” narrower than shoulder width probably won’t have an appreciable difference on how tippy or slippy you are in a tiled oily/trippy floor for instance)….
you might liken it to the age old argument 9mm vs 45 acp. The differences may seem large on paper…but in practice their relative utility is comparable.