Unique tire/wheel sizing situation

Hey all. First post. I've researched extensively and I cannot seem to find the answer to my specific "will it fit" question. If it HAS been answered, I'm sorry in advance and deserve the verbal flogging that will inevitably come my way. Hopefully, it includes a link to where the question is answered.

I'm about to install my friend's take-off 3rd gen suspension on my 2nd gen access cab SR5. I've read this will give me 1-2" of lift. Nice.

I own 265/75/R16 KO2s.

I want to switch out my stock wheels with some black steelies with a bit more poke.

Could I get 16x8 with 4" BS, -12 offset wheels to fit? Or am I stuck with 16x7 with 4" BS and 0 offset?

Note that stock is 16x7, 30mm offset. Unsure of backspacing.

 

Not sure anyone will be answer that specific of a will it fit question definitively since there's so many variables at play. The best thing you can do is to jack up the truck and start taking clearance measurements after you get the new suspension installed and then do the math, accounting for the offset changes to figure out if it fits. Either that or take it to a suspension shop and get a professional to take a look once the new suspension is installed.

 

Thanks. I was hoping to get it all done in one go to avoid needing to get an alignment done twice. But if that's the way she goes, that's the way she goes.

 

If it's only a few days you can drive without an alignment after the lift no problem while you wait to try the new wheels. I did it recently myself. And in any case you can make the wheels and tires work if you're will to do the work with the heat gun and sawzall

 

As long as the 16x8 steelie doesn’t rub the caliper you’ll be fine there. You may need do some slight trimming due to the the -12 offset. Also you won’t get 2” of lift from the 3rd gen suspension you’ll get about 1”

 

Ok, this is good to know. I read that you get more lift when it's on an access cab model? Can't seem to find the post now, so maybe I'm wrong.

 

So with a V6 4wd SR5 access cab you should gain about 1.25" in the front, sometimes closer to 1.5" if your springs are completely shot! If you have the 4cyl 4wd access cab, you will likely be around 1.5"-1.75" lift in the front. Either way, a cheap way for a much improved ride and a bit of a lift!

As far as the wheels go, you should be just fine. I have 17x9 FN Six Shooters that are 5" backspace and 0 offset. When I had the 3rd gen suspension on I had 265/70r17 Duratracs with absolutely no issues which are the same overall diameter as what you are looking at. Since then I have put on 6112's, B110 5100's in the rear and OME leaf springs along with Kenda Klever RT 33x10.50. Again with no issues. Like @gotoman1969 said, as long as it clears the calipers up front you'll be fine. I don't know of steel wheels with the spec you are looking at, but I haven't looked either. As long as the lug pattern and hub bore are all good, then you should have zero issues.

This is the only picture I have showing the offset of the FN Wheels mentioned above. This is when I had the 265/70r17 Druatracs and 3rd gen suspension.



And if you're curious about the difference of the 3rd gen lift vs the setup mentioned above, here it is with the 265 duratracs. When I made the 3rd gen suspension review thread I did not have these wheels yet btw.

 

Thank you so much. Super helpful.

So, knowing that I could fit a 16x8, 4" BS, -12mm offset steelie (Vision Soft 8, FWiW), my next question would be: How much poke outside the fender flares will that give me?

I've looked all over and I'm seeing wildly different results. Realistically, I'm looking for a level of poke the same as yours. Minimal, but outside the fender flare.

 

It looks like yours should sit almost identical to mine.

Backspacing is an old term and offset is the more recent (like last 20yrs or so). So the backspacing is mostly irrelavant in this case and after doing the math, irrelevant in my case too.



So in my case with a 9" width and 0 offset, the amount between the mounting surface to the outside lip of the wheel is 114.3mm/4.5" . On the wheels you are looking at it should be 113.6mm/4.47" from the mounting surface to the outside lip.

Here's the math. To get the mounting surface to the outer lip measurement you make the - into a + because the - number refers to how the mounting surface is behind the center or closer to the inboard side of the inner lip.
- 8"= 203.2mm
- 203.2mm / 2 = 101.6mm
- 101.6mm + 12mm = 113.6mm

So from the hub to the outer lip of the wheel it should be within almost 1mm of mine, pretty much not noticeable. The current FN Six Shooter in an 8' width (and many other aftermarket wheels for the Tacoma) are the same specs as the ones you are looking at, the 9" ones aren't available anymore.

 

Also found this nifty calculator that I'm bookmarking now! The Orange represents your wheel choice and Green represents what I have. So essentially the Orange and Green pretty much overlap on the left side which is the outside of the wheel.

 

My dude. You're doing god's work. This is infinitely more helpful than squinting at a series of pictures with a bunch of unknown factors or clumsily holding a tape measure out from my car and trying to imagine what a tire there would look like. Sometimes you just need someone to talk you through it. Thanks again!

 

No problem!! That's what this community is here for! I am by no means a wheel fitment guru, but I've been around enough to help out where I can.

The hard part of wheel fitment is knowing where to begin. It can get confusing very fast when wheel specs are thrown out like a McDonalds order for your coworkers expecting everyone to understand like it's common knowledge. lol Some have an innate comprehension of how it will fit a vehicle. While others like myself have to look it up and compare to a known vehicles wheel specs like we are doing here. Plus there is the whole backspacing vs offset wording issue too. It's odd how a manufacture lists both but neither jive with each other when you calculate them. This actually helped me out quite a bit too since I have been looking for wheels for my 91 MR2 with different offsets front and rear.

 

Here's the straight jive my brother. Backspacing is the confluence of rim width and offset.

 

What I find odd is that a 9" wheel with 0 offset doesn't really make sense that my backspacing is 5". If backspacing is measured from the wheel's mounting plate to its inner lip and offset is distance that the mounting surface of the wheel is away from the centerline of the wheel then it would stand to reason that my 9" width with a 0 offset should be a 4.5" backspacing correct? There is something I am missing here, I have no idea what it is though??

 

All I can tell you is that the chart doesn't lie, and that .5" of backspacing you mention is missing is consistent throughout the chart, i.e. 6" width rim on 0 offset has BS = 3.5", not 3"

 

I agree, the chart doesn't lie. But I wonder why the extra .5" comes from??

I may have found it... "Backspace is simply the distance from the mounting surface to the inside edge of the wheel, and offset is simply the distance from the mounting surface to the center of the wheel. So if you can measure your backspace and overall width, then everything else is simple math. In this example in the video below, Kevin is working with an 11-inch wheel (a stated width of 11 inches or 11 inches of tire mounting surface inside the wheel flanges). When he measures the overall width including the wheel flanges, it measures 12 inches. (Note: As a rule, your overall width will almost always be one full inch larger than the stated width.)"

https://forgeline.com/latest-news/tech-how-to-measure-backspace-and-offset.html