Ford Bronco Wheel Fitment Guide
Bolt pattern, offset, backspacing and center bore for the 2021+ Ford Bronco, including the Raptor's different 6x135 pattern, plus what changes between Sasquatch and non-Sasquatch trucks and which offsets work with 35s and 37s.
Quick Answer
Every 2021+ Ford Bronco except the Raptor uses a 6x5.5 (6x139.7 mm) bolt pattern, a 93.1 mm center bore and M12x1.5 lug nuts. The Bronco Raptor is different: it uses a 6x135 mm bolt pattern, an 87.1 mm center bore and M14x1.5 lug nuts, so standard Bronco wheels don't fit it. Non-Sasquatch factory wheels use a +55 mm offset, which tucks the tire in. Sasquatch wheels are 17x8.5 with a +30 offset, and that's the starting point for 35s. In 63 owner-reported Bronco builds, the most common wheel is a 17x8.5 with a 0 offset: 10 builds on 35 to 38 in tires, none reporting rubbing. A 17x9 -12 is second, with 7 of 9 builds rubbing-free.
Table of Contents
- What You Need to Know First
- Which Option Is Right for You?
- Bronco Offset Chart: How Far the Wheel Sticks Out
- Real Build Data
- Sasquatch, Non-Sasquatch and Raptor
- How Wheel Fitment Works
- Supporting Parts You May Need
- Common Mistakes
- Recommended Setup Paths
- Frequently Asked Questions
- Related Guides
- Sources & Technical References
1. What You Need to Know First
| Spec | Bronco (all trims except Raptor) | Bronco Raptor |
|---|---|---|
| Bolt pattern | 6x5.5 in (6x139.7 mm) | 6x135 mm |
| Center bore | 93.1 mm | 87.1 mm |
| Lug thread | M12x1.5 | M14x1.5 |
| Factory wheel | 16 to 18 in, +55 mm offset; Sasquatch: 17x8.5, +30 mm, beadlock capable | 17x8.5, +34 mm |
| Factory tires | 255/70R16 (30 in) up to 315/70R17 (35 in) on Sasquatch | 37x12.50R17 |
| Track width | 65.0 in | 73.2 in (2-door), 73.6 in (4-door) |
Bronco Raptor: Different Bolt Pattern
The Bronco Raptor is the only Bronco that uses a 6x135 mm bolt pattern, with an 87.1 mm center bore and M14x1.5 lug nuts. Every other Bronco uses 6x139.7. Wheels for a standard Bronco won't bolt onto a Raptor, and Raptor wheels won't bolt onto a standard Bronco. Always shop by your exact model.
The standard Bronco doesn't share a bolt pattern with the Wrangler or Gladiator. Its 6x5.5 pattern is the same as the Ford Ranger, Tacoma, 4Runner and many half-ton trucks, but center bore and offset vary between them, so don't assume a wheel from another truck fits. The Raptor's 6x135 pattern is shared with the F-150, not the rest of the Bronco lineup.
Ford makes the Bronco on 2-door and 4-door bodies. Both use the same wheel specs, so wheel fitment is the same for both.
2. Which Option Is Right for You?
Your best wheel depends on your tire size and how much poke you want past the fenders.
3. Bronco Offset Chart: How Far the Wheel Sticks Out
All rows use a 17x8.5 wheel so you can compare offsets directly. Backspacing is calculated from width and offset. Every 25 mm of lower offset moves the tire about 1 in further out.
| Offset | Backspacing | Compared to Sasquatch (+30) | What It Looks Like |
|---|---|---|---|
| +55 (non-Sasquatch factory) | about 6.9 in | 1 in further in | Tucked; can rub on 35s |
| +30 (Sasquatch factory) | about 5.9 in | Baseline | Factory 35 in position, tire tucked slightly under the flare |
| +25 | about 5.7 in | 0.2 in out | Nearly factory Sasquatch look |
| +12 to +15 | about 5.3 in | 0.6 to 0.7 in out | Tread edge roughly at the Sasquatch flare edge |
| 0 | about 4.75 in | 1.2 in out | Mild poke; owners report no rubbing on 35s |
| -10 to -12 | about 4.3 in | 1.6 in out | Tires roughly 1 in past the factory flares |
4. Wheel Size and Offset: Real Build Data
The most common wheel setups across 63 owner-reported Ford Bronco builds (2022 to 2025). The Raptor is left out because it uses a different bolt pattern. Backspacing is calculated from width and offset. "Rubbed" includes slight rubbing at full steering lock.
| Wheel | Offset (mm) | Backspacing | Builds | Tire Sizes Run | Result |
|---|---|---|---|---|---|
| 17x8.5 | 0 | about 4.75 in | 10 | 35 in, 37 in, 38 in and up | No rubbing reported |
| 17x9 | -12 | about 4.5 in | 9 | 35 in, 37 in | 2 of 9 rubbed |
| 20x10 | -18 | about 4.8 in | 6 | 35 in, 37 in | 2 of 6 rubbed |
| 17x9 | +1 | about 5.0 in | 4 | 33 in, 35 in, 37 in | 1 of 4 rubbed |
| 18x9 | 0 | about 5.0 in | 2 | 35 in, 37 in | 1 of 2 rubbed |
| 20x10 | -25 | about 4.5 in | 2 | 35 in, 37 in | 1 of 2 rubbed |
| 22x12 | -44 to -51 | about 4.8 in | 3 | 35 in, 37 in, 38 in and up | 1 of 3 rubbed |
34 of 63 builds run 17 in wheels, and 44 run 8.5 or 9 in widths. One thing stands out: 29 of the 63 builds report some metal trimming, including half of the 17x8.5 0 offset builds. On a Bronco, offset keeps the tire off the suspension, but bigger tires often still need trimming. See the Tire Size Guide for what each lift height needs.
5. Sasquatch, Non-Sasquatch and Raptor
Non-Sasquatch Broncos
Base, Big Bend, Black Diamond, Outer Banks and Badlands trucks without the Sasquatch package come on factory wheels with a +55 offset. That's fine for the factory 30 to 33 in tires, but it puts 35s close to the suspension and body mounts at full lock. Owners running 35s on these trucks usually switch to a wheel between +33 and 0 offset, add a small front level, and in some cases remove the crash bars behind the front bumper. Non-Sasquatch trucks also have different gearing and suspension than Sasquatch trucks, so wheels alone don't make a Sasquatch. See the Bronco Tire Size Guide for full tire fitment.
Sasquatch Broncos
The Sasquatch package comes on 17x8.5 beadlock-capable wheels with a +30 offset and 315/70R17 tires. Many owners swap to aftermarket wheels to get more poke or a non-beadlock wheel, and keep the factory 35s. Some non-Sasquatch owners buy Sasquatch takeoff wheels and tires as an easy route to 35s.
Bronco Raptor
The Bronco Raptor exclusively uses a 6x135 mm bolt pattern with an 87.1 mm center bore and M14x1.5 lug nuts. No other Bronco does. Its factory wheels are 17x8.5 with a +34 offset on 37 in tires, on a track about 8 in wider than standard Broncos. Raptor and standard Bronco wheels are not interchangeable, so shop Raptor wheels by the 6x135 pattern.
6. How Wheel Fitment Works
A wheel has to match the hub, clear the brakes and suspension, and place the tire where it won't rub. Five measurements decide that.
Bolt Pattern
The standard Bronco's 6x5.5 pattern means six lugs on a 5.5 in (139.7 mm) circle; the Raptor's 6x135 pattern puts six lugs on a 135 mm circle. It's one of the most common truck patterns, so there's a huge wheel selection. Always confirm the wheel lists the 2021+ Bronco, since center bore and offset still have to match.
Offset & Backspacing
Offset is the distance in millimeters from the wheel's centerline to its mounting face. Positive offset tucks the wheel in; negative pushes it out. Backspacing measures the same thing in inches from the back edge of the wheel. The Bronco's independent front suspension doesn't have much room inboard, so lower offsets are what make room for 35s at full steering lock.
Center Bore
The standard Bronco's hub is 93.1 mm (87.1 mm on the Raptor). A wheel with a matching bore centers itself on the hub. A wheel with a larger bore needs a hub centric ring so it doesn't center on the lug nuts alone, which can cause vibration.
Lug Nuts
Standard Broncos use M12x1.5 lug nuts; the Raptor uses M14x1.5. Aftermarket wheels often need a different seat type than factory, so use the lug nuts the wheel maker specifies, torque them to the spec in your owner's manual, and re-torque after the first 50 to 100 miles.
Beadlock-Capable Wheels
The Sasquatch wheels are beadlock capable, which means they're designed to accept a bolt-on beadlock ring for very low tire pressures off road. As delivered they work like a normal wheel. Most owners never add the rings, which is why many swap to standard aftermarket wheels.
7. Supporting Parts You May Need
A wheel swap usually needs a few small parts to finish the job right.
8. Common Mistakes
- Running 35s on factory non-Sasquatch wheels. The +55 offset tucks the tire in close to the suspension and body, where it rubs at full lock.
- Buying a 6x5.5 wheel without checking the Bronco listing. The bolt pattern can match while the center bore or offset doesn't.
- Reusing factory lug nuts on aftermarket wheels. If the seat type doesn't match, the wheel won't clamp correctly.
- Treating the Raptor like a standard Bronco. The Raptor uses a 6x135 bolt pattern, so standard Bronco wheels won't bolt on at all.
- Forgetting the spare. A spare on a different offset may not clear the tailgate carrier or match the other four.
9. Recommended Setup Paths
Non-Sasquatch to 35s
- 17x8.5 or 17x9 wheels
- +25 to 0 offset
- 35 in tires plus a small front leveling kit
Sasquatch, more poke
- 17x8.5 or 17x9 wheels
- +15 to 0 offset
- Keep the factory 315/70R17s
Aggressive / 37s
- 17x9 wheels
- 0 to -12 offset
- 37 in tires with a lift; see the Lift Kit Guide
10. Frequently Asked Questions
What is the Ford Bronco bolt pattern?
Every 2021+ Ford Bronco except the Raptor uses a 6x5.5 inch bolt pattern, also written 6x139.7 mm, with a 93.1 mm center bore and M12x1.5 lug nuts. The Bronco Raptor uses a 6x135 mm bolt pattern with an 87.1 mm center bore and M14x1.5 lug nuts.
What offset wheels should I run on a Bronco with 35s?
Most owners run a 17x8.5 or 17x9 wheel between +30 and 0 offset. The factory Sasquatch wheel is +30, an offset of +12 to +15 puts the tread near the flare edge, and in our build data, all 10 Broncos on 17x8.5 0 offset wheels reported no rubbing on 35 to 38 in tires.
Can I put Sasquatch wheels on a non-Sasquatch Bronco?
Yes. Sasquatch wheels share the standard Bronco's 6x5.5 bolt pattern and 93.1 mm bore, and their +30 offset sits about 1 in further out than the +55 non-Sasquatch wheels. Many owners buy Sasquatch takeoff wheels and tires as a route to 35s.
What is the factory Bronco Sasquatch wheel offset?
The Sasquatch wheel is a 17x8.5 beadlock-capable wheel with a +30 mm offset, which works out to about 5.9 in of backspacing.
Do Bronco Raptor wheels fit a regular Bronco?
No. The Bronco Raptor exclusively uses a 6x135 mm bolt pattern with an 87.1 mm center bore, while every other Bronco uses 6x139.7 mm with a 93.1 mm bore. The wheels aren't interchangeable in either direction.
Can I reuse my factory TPMS sensors on aftermarket wheels?
In most cases, yes. The factory sensors can be moved to aftermarket wheels that accept them. If you'd rather keep your factory wheels intact as a spare set, buy a new set of sensors for the new wheels.
Do I need wheel spacers on my Bronco?
Not if you buy a wheel with the right offset. Spacers can push the factory wheel out, but a wheel with the offset you want is the cleaner way to get the same stance.
11. Related Guides
12. Sources & Technical References
- Factory tire sizes, wheel offset and track width: Ford 2025 Bronco Technical Specifications
- Bolt pattern, center bore and lug thread: Wheel-Size.com, Ford Bronco lug nut and hub specs
- Sasquatch wheel offset and aftermarket offsets with 35s: Bronco6G.com owner discussion
- Bronco Raptor wheel offset: Bronco6G.com owner discussion
- Build data: 63 owner-reported Ford Bronco wheel and tire builds, 2022 to 2025 model years, compiled by Offroad Source.
- Offset comparison on Sasquatch tires: OVR Magazine
Not sure which wheel fits your Bronco? Call 419-670-3141 or email sales@offroadsource.info for a free fitment check. We also mount, balance and install at our shop in Paulding, Ohio.