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Replace Sasquatch with Method 703 Offset question.

broncorik

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What about SAS? I am talking about SAS and thinking about +35
Mine is SAS and I opted for +35 to closely match the +30 OEM SAS wheel. If you go with zero, your happiness will depend on if your tire being 1.2 inches farther out on each side is ok with you. For me, it wasn't...so I went with my tires being 5mm inside the SAS flare (and keeping my steering geometry as close as possible to OEM). I wish Method made a hub-centic +30 wheel for Broncos, but they do not. I had some custom hub spacers made, even though the Methods seemed to be fine with the lug-centric design, just because it makes it easier to line things up in precarious situations rather than having the lugs pull the wheel on center. Maybe it is because I am getting older or because I try to spend less time wrenching but I lean more towards function versus form these days. As a kid I went through a phase of stuffing huge "meats" (fat tires) on the rear of my muscle cars and "pizza cutters" (skinny tires) up front...and it drove my dad (spent his adult life working for GM in engineering) nuts. He lectured me more times than I could count about alignment being screwed up, crappy handling, stress on drivetrain, etc. etc. but I went about my business and broke things/lived with crappy handling until I figured out the concept of how sensitive OEM things are to modifications. My muscle car these days is more like this stance...the meats are still there but the axles were shortened so the meats don't stick out UNDER the quarters...and the front tires are wide enough to actually grip the road...and the front suspension is adjustable enough to actually hold proper alignment to steer/stop...with our Broncos, we can only go so far with OEM components before bigger tires and lifts skew whatever those components were meant to do. There are folks with mad fab skills and loads of money who will be able to create lifted beasts with 40s, but most mere mortals won't go that route due to structural or financial limitations.
Ford Bronco Replace Sasquatch with Method 703 Offset question. 00L0L_8b4bSmLXiwLz_0CI0t2_1200x900
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Bronkers

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I am a noob in wheels, but I want to replace standard sasquatch wheels with Method 703. The site has two offsets: 0/4.75" and 35/6.2" What to choose?
The OEM squatches are +30 (not 0) for a reason(s).

Get the +35 and spare yourself the track (trail) width limitations and increased off-axis wheel bearing loading
Ford Bronco Replace Sasquatch with Method 703 Offset question. 20220506_142539
 

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Raptor911

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broncorik

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And this is an excerpt from the Toyota forum regarding exactly what we are discussing here...worth the read:

BenWa, I had a long conversation with a wheel bearing engineer at SKF a couple of years ago about the effect of changing the wheel's offset either by using different wheels or through use of spacers, same thing.

The 2nd gen Taco comes from the factory with a +30mm offset to its wheels. The SKF engineer told me this was the ideal offset that Toyota established to center the load of the vehicle over the wheel bearing module. If you remember, each front wheel bearing module has two side-by-side tapered roller bearings in the bearing module. The engineering design is to split the load so that each of the tapered parts in the module takes about 50% while driving in a straight line.

When you move the wheel outward (change the offset from the +30mm factory design to a lower number, such as +12mm) you proportionally change the loading so that the outermost tapered bearing takes a greater load and the load on the innermost tapered bearing decreases.

Let's do some math for fun. Assume that your truck weighs 4,000 lbs. and that the weight distribution is 50% on the back and 50% on the front. That would would make about 1,000 lbs. of weight on each corner, or 500 lbs. that each tapered bearing part in one of the front bearing's module would be loaded (assuming a straight path). Now, let's change the offset by say 60% from the factory's +30mm to a +12mm wheel or doing the same by using spacers to move each wheel outward by 18mm (0.7 in.).

Now watch what happens to the loading. By changing the offset by 60% the innermost tapered roller bearing's load decreases 60% from 500 lbs. to 200 lbs., and the outer now has to take a load of about 830 lbs., up from the 500 lbs. it previously carried. Keep moving the stance wider and work the math, you will soon see that the outer tapered roller is taking almost all the load and the inner almost none.

SKF told me that the design life of those bearing modules is 100k miles if the factory +30mm offset is maintained. I have a relatively modest offset to my wheels: they are +18mm, or 12mm (0.47 in.) different from factory.

I asked for a gut feeling from SKF on the expected life of my front bearings with the offset I run. As I recall it was something like to expect a reduction to somewhere around 65-70k miles or so, I'll have to dig into my old notes to confirm.

Obviously chuck holes, rocks, high speed cornering, etc. will hammer the wheel bearings too.

By the end of the thread this guy had replaced 10 wheel bearings with about 120,000 mi. on his Tacoma. He clearly states in the thread, and in email communication with me, that the high toll on wheel bearings started when he changed the offset of his wheels. As I recall, he told me in correspondence he was running something like -6mm offsets (again I would need to check my notes to confirm). The thread can speak for itself.

Great post, Taco'09. Hard to imagine that 1.25" could make such a difference, but these trucks (like any vehicle) have so much engineering put into them with the intention of them remaining stock. Once you start modding, all that careful engineering starts to go right out the window.

This is the best explanation I have seen about wheel bearing wear with spacers or high off-set wheels.
 

broncorik

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RTR jusr released a new wheel >> https://www.rtrvehicles.com/product...81574&pr_ref_pid=6839217193126&pr_seq=uniform

- EVO6
- 17x9
- 0 or 30MM offset
- hub-centric >> Other than the OEM wheel, this is the only wheel I know made for the Bronco that is hub-centric

1658771147645.webp
Those are really nice...I went with the Methods because they have the "bead grip" technology on both the inners and outers...and the tire place shared that it is a challenge to mount or unmount tires with those rims because the bead grips work so well. I wish Method was hub centric, but even without the hub spacers I had made I had no balance issues.
 
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Most guys who offroad hard want a little poke .. this is the only reason why they recommend it.

Though a 9 inch wheel means you have .25" inches on either side (inner and outer). So I wonder if .25" inner (30mm offset) would hit the inner suspension?

below is their other wheel which comes in 25+ offset (hubcentric and 17x9).. which I think is perfect

Ford Bronco Replace Sasquatch with Method 703 Offset question. 1658772679089


I am lost. Why +0? Because 9 and 8.5?
  • We recommend +30 offset for Non-Sasquatch equipped Broncos and +0 for Sasquatch equipped Broncos
 

broncorik

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I am lost. Why +0? Because 9 and 8.5?
  • We recommend +30 offset for Non-Sasquatch equipped Broncos and +0 for Sasquatch equipped Broncos
I am perplexed by that as well...SAS OEM is 17x8.5 +30. Maybe they are poke fans? They make cool stuff but no idea why they make a +30 (like OEM SAS) and then don't recommend using it on a SAS...unless they are concerned that the 1/4 inch wider rim towards the inside might rub something...but my stock tire does not rub with the 5 additional mm of positive offset (but 1/4 inch is 6.35 mm). The backspace measurement is the one to also consider.
 
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They do not. Also if you want the white lettering you should ensure its states "RWL" or "Raised White Lettering"
I don't want white, can I just rotate them, or should I search for a set without white lettering?
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