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Alright guys I'm still trying to wrap my head around the whole backspacing, offset thing so maybe someone here can help.
I have a 2004 FX4 ranger, bought the super lift 4 inch suspension kit and am just waiting on that tax return to pay for the rims and tires.
Anyway, I'm looking at a couple of rims but I found some for $143. They're the TRD Pro rims which i think are the same kind I have on my 4runner, 17x7 with 11mm of backspacing and 4mm of offset.
I can get some Bora spacers/adapters that will adapt my setup to use the 6 lug pattern that these rims use, I'm thinking either 1.5 or 2 inch spacers, I've used both on past vehicles with no issues and I fully trust them to hold up so please no comments about that. Any help would be great, I emailed Toyota to get the bore size to match the spacers to, and emailed Super lift to get their take on it as well.
Their website says to use 15x8 or 16x8 inch rims with 3.5-4 (inches?) of backspacing to fit the lift. If they weren't 6 lug I'd just take them off and see if they fit but I'm not sure how accurate it would be without having a spacer.
It has the Ranger wheel back spacing and off-sets
4.5" back space is stock Ranger wheels
offsets relate to the centerline of the wheel and where its bolted to the hub
Lift won't effect this, suspension lift does effect alignment, body lift doesn't, well shouldn't, lol
Wheel back spacing and offset effect alignment as well
Just need to do that math for new wheels backspacing and spacers/converters
You need enough back spacing so wheels don't hit the brake calipers, or drums, or tie rod ends
You can go with spacers but look at local laws, there are "fender coverage" laws in many areas, which don't allow tires to stick out passed the fenders, so vehicles can't spray water/mud onto passing vehicles, you can get add-on fender flares to get back the coverage, but added expense
Stock wheels are 15x7 with -6mm offset.
New rims are 17x7 with 4mm offset
So that puts it at about .4 inches closer to the truck then before
With 1.5 adapters that should mean the wheels would only stick out 1.1 inches more then stock on each side.
So I think this is gonna work, I used to run 2inch spacers on my old 2wd Ranger with no rubbing issues. And the 4inch lift would counter the extra 2 inches in rim size anyway, even if I put fatter tires.
You need the back spacing included, offset is just for the center line of the wheel as it applies to the back spacing
Rim/wheel diameter doesn't matter as long as it won't rub on calipers/drums
Tire diameter matters, as far as Lift
i.e. 21" wheel with low profile tire might only be 28" over all diameter and would fit on stock Ranger
Tire diameter and width is what matters
A 265/70R15 tire is 29.6" diameter
A 265/60R17 tire is 29.5" diameter
so 15" or 17" wheel but same diameter
21" wheel, with a 245/45R21 tire is 29.7" diameter
Okay I just emailed Toyota and asked for the backspacing on them. I looked again online and the 11mm doesn't say it's the backspace, not sure what it means. We'll see what they say.
Right now I'm running aftermarket 15s with 31x10.5R15 tires that the old owner had put on.
Okay TRD rims have 4.5 inches of backspacing which is according to that link you gave me, the stock backspacing of the Ranger rims as well, correct?
So basically all I will be changing is going from about 12mm offset to 4mm offset.
So it would push it 8mm further from the truck then, and after my spacers would mean my truck now has an offset of about -30 (+8mm with the -38 of the spacers)
The offset would stay as the offset for that wheel, the offset is just about where the center line of the rim is compared to where it bolts to the hub
If spacer was 1" thick then back space would be 5.5" with spacer, so wheel would stick out 1" farther, plus any offset
2" spacer would stick out 2" farther plus offset
