Ford Bronco Tire Size Chart: Trim and Year 2021 to 2026
The Ford Bronco tire size chart runs from 30 inch tires on the Base trim to 35 inch tires on Sasquatch trims and 37 inch tires on the Raptor. Trim and package decide the size, not model year. The Bronco Sport is a different platform and uses 17 and 18 inch car-size tires.
Below you get the full factory chart, the real measured diameters, and what fits without a lift. You also get the speedometer error each upgrade causes and three tire picks matched to each size. Start with the chart, then check what changes when you go bigger.
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Sixth generation Bronco. Bars show overall tire diameter.
| Trim | Tire Size | Diameter | Wheel | Factory Tire |
|---|---|---|---|---|
| Base Standard | 255/70R16 | 30.1 in | 16×7 steel | Bridgestone Dueler H/T |
| Big Bend Standard | 255/75R17 | 32.1 in | 17×7.5 alloy | Bridgestone Dueler A/T RH-S |
| Black Diamond Standard | LT265/70R17 | 31.6 in | 17×7.5 steel | General Grabber A/T |
| Outer Banks Standard | 255/70R18 | 32.1 in | 18×7.5 alloy | Bridgestone Dueler A/T RH-S |
| Badlands Standard | LT285/70R17 | 32.7 in | 17×8 alloy | BFGoodrich KO2 or Goodyear Territory |
| Sasquatch Package, Wildtrak, Everglades, Heritage Limited Sasquatch | LT315/70R17 | 34.4 in | 17×8.5 beadlock capable | Goodyear Wrangler Territory MT |
| Raptor Raptor | 37×12.50R17 | 36.5 in | 17×8.5 beadlock capable | BFGoodrich All-Terrain T/A KO2 |
Bar length starts at 28 inches, so it shows the difference between sizes rather than the full tire height. Diameters are calculated from the size code, except the Raptor, which uses the measured KO2 diameter. Sources: Wheel-Size and Ford Authority.
What Tire Size Comes on Each Ford Bronco Trim
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Your Bronco’s tire size depends on its trim and whether it has the Sasquatch Package. The chart below lists every factory size for the sixth generation Bronco. Wheel-Size lists the same factory sizes for 2025 and 2026, and earlier 2021 and 2023 owner guides show the same sizes, so the chart holds for 2021 to 2026.
| Trim | Wheel | Factory Tire Size | Overall Diameter | Factory Tire Model |
|---|---|---|---|---|
| Base | 16×7 steel | 255/70R16 | 30.1 in | Bridgestone Dueler H/T |
| Big Bend | 17×7.5 alloy | 255/75R17 | 32.1 in | Bridgestone Dueler A/T RH-S |
| Black Diamond | 17×7.5 steel | LT265/70R17 | 31.6 in | General Grabber A/T |
| Outer Banks | 18×7.5 alloy | 255/70R18 | 32.1 in | Bridgestone Dueler A/T RH-S |
| Badlands | 17×8 alloy | LT285/70R17 | 32.7 in | BFGoodrich KO2 or Goodyear Territory |
| Sasquatch Package, Wildtrak, Everglades, Heritage Limited | 17×8.5 beadlock capable | LT315/70R17 | 34.4 in | Goodyear Wrangler Territory MT |
| Raptor | 17×8.5 beadlock capable | 37×12.50R17 | 36.5 in | BFGoodrich All-Terrain T/A KO2 |
Factory sizes run from 255/70R16 on the Base to LT315/70R17 on Sasquatch trims and 37×12.50R17 on the Raptor. Overall diameter is the tire’s height. Ford sells LT285/70R17 as a 33 inch tire and LT315/70R17 as a 35 inch tire, but the real numbers run smaller. Diameters above are calculated from the size code, except the Raptor, which uses the measured KO2 diameter.
Tire models come from the Ford Authority tire and wheel guide, which lists Ford’s original equipment by trim.
Standard Trims Without Sasquatch
Base, Big Bend, Black Diamond, Outer Banks, and Badlands each get their own size. Base rolls on steel 16 inch wheels with all-season Bridgestone Dueler H/T tires. Big Bend and Outer Banks share a 32 inch Bridgestone all-terrain, and Badlands steps up to LT285/70R17.
Trim also changes wheels, packages, and suspension. The Ford Bronco trim levels chart shows what else separates each one.
Sasquatch Package Trims
The Sasquatch Package swaps in 17×8.5 beadlock capable wheels and LT315/70R17 Goodyear Wrangler Territory MT tires. It is standard on Wildtrak, Everglades, First Edition, and Heritage Limited, and optional on most other trims.
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Listen Free for 30 Days As an Amazon Associate I earn from qualifying purchases.Wheel-Size lists the Sasquatch wheel at ET30. Every other 17 inch wheel listed for non-Raptor trims is ET55. Sasquatch and standard wheels are not interchangeable.
Raptor Trim
The Raptor is the only Bronco on 37 inch tires. Ford fits BFGoodrich All-Terrain T/A KO2 tires in 37×12.50R17 on 17×8.5 wheels. The Raptor also uses a 6×135 bolt pattern, so standard Bronco wheels do not bolt on.
Not sure which row is yours? Here is how to confirm it in two minutes.
4 Ways To Confirm Your Exact Bronco Tire Size
The fastest check is the placard on your driver door jamb, and three other sources back it up. Use at least two before you order tires.
Driver Door Jamb Placard
Open the driver door and read the sticker on the jamb. It lists the tire size your truck left the factory with and the recommended cold pressure. If the tires were changed later, the placard still shows the original size.
Tire Sidewall Code
Read the code on the tire itself. In LT315/70R17, LT marks a light truck tire, 315 is the width in millimeters, 70 is the sidewall height as a percentage of width, and 17 is the wheel diameter in inches, per the Wheel-Size tire glossary.
Build Sheet or Window Sticker
The window sticker or build sheet shows whether the truck has the Sasquatch Package. That answers the biggest question, because Sasquatch changes the wheel and tire size on any trim it is added to.
Wheel Size Database Lookup
Pick your year and trim in a fitment database to see the original size and wheel dimensions side by side. Confirm the bolt pattern before you order wheels. Non-Raptor sixth generation Broncos use 6×139.7 and the Raptor uses 6×135. The Ford bolt pattern chart covers every model and year.
The Bronco Sport is a separate platform, so its sizes get their own chart.
Ford Bronco Sport Tire Sizes by Trim and Engine
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The Bronco Sport uses 17 and 18 inch wheels with tires between 225 and 235 millimeters wide. Wheel-Size lists these original sizes for the 2025 model year, split by engine.
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See Annual Plans As an Amazon Associate I earn from qualifying purchases.| Engine | Wheel | Factory Tire Size | Overall Diameter |
|---|---|---|---|
| 1.5L EcoBoost | 17×7 ET37.5 | 225/65R17 | 28.5 in |
| 1.5L EcoBoost | 18×7 ET37.5 | 225/60R18 | 28.6 in |
| 2.0L EcoBoost | 17×7 ET37.5 | 225/65R17 | 28.5 in |
| 2.0L EcoBoost | 17×7 ET37.5 | 235/65R17 | 29.0 in |
Wheel-Size also lists 235/60R18 on a 7.5×18 ET38 wheel as an alternate size. Diameters are calculated from the size code.
The 2025 Sasquatch Package for Outer Banks and Badlands adds all-terrain tires that Ford Authority describes as 29 inch tires on the Bronco Sport. The Bronco Sport uses a 5×108 bolt pattern. Full size Bronco wheels and tires will not fit it.
The two SUVs are built differently, with a body-on-frame Bronco and a unibody Sport. The Bronco vs Bronco Sport comparison explains what that means for capability.
Now the question most owners actually search for: how big can you go.
Which Bigger Tires Fit Your Bronco Without a Lift
33 inch tires fit most trims without changes, 35 inch tires sometimes fit, and 37 inch tires rarely fit without modification. Sources disagree at the edges, so we show the range instead of averaging it.
Across fitment guides, non-Raptor Broncos contact the same three places as tires grow. Those are the front crash bars, the fender liners, and the sway bar at full lock.
33 Inch Tires on Standard Trims
LT285/70R17 is the safest upgrade. American Fusion Wheels reports that it fits stock on most trims with no rubbing. Badlands already ships on this size, which is why it needs no adjustment on the trims closest to it.
35 Inch Tires on Standard Trims
This is where sources split. American Fusion says a non-Sasquatch Bronco needs a 2 inch leveling kit or small lift for 315/70R17. Hardrock Offroad’s fitment guide says the Base may need a 2 inch lift, while Big Bend, Black Diamond, and Outer Banks can take 35s without suspension changes in some cases.
A Ford Authority reader with a Big Bend reported needing a lift kit and crash bar removal. A 35×12.50R17 tire is a nominal 35 inch tire, while 315/70R17 measures 34.4 inches. Owners on Bronco6G report the real gap is well under an inch and varies by brand.
37 Inch Tires on Non Raptor Trims
Plan for real work. A Bronco tire fitment guide says 37s fit cleanly only on the Raptor. Sasquatch owners run them with rubbing trade-offs, and anything bigger than 35 inches means trimming, a lift, and regearing.
Taller tires also add overall height, which matters for garages and roof racks. See the Ford Bronco height by trim and tire setup for how much.
Bigger tires also change what your speedometer tells you.
How Much Do Bigger Tires Throw Off Your Speedometer
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A 35 inch tire makes your speedometer read about 7 percent low. The truck counts wheel rotations, and a larger tire covers more ground per rotation, so you travel faster than the dash shows. The odometer under-counts distance by the same percentage.
The table uses the Big Bend 255/75R17 as the stock reference at 32.1 inches.
| Upgrade Tire | Overall Diameter | Change vs Stock | Real Speed When Dash Reads 60 mph |
|---|---|---|---|
| LT285/70R17 | 32.7 in | +2.0% | 61.2 mph |
| LT315/70R17 | 34.4 in | +7.3% | 64.4 mph |
| 37×12.50R17 KO2 | 36.5 in | +13.9% | 68.3 mph |
The 315/70R17 measures 34.4 inches with 587 revolutions per mile. The BFGoodrich KO2 in 37×12.50R17 measures 36.5 inches with 569 revolutions per mile. Percentages and speeds in the table are our calculations from those diameters.
Sasquatch trucks already run 34.4 inch tires, so going from 35s to 37s adds about 6 percent. At a true 60 mph, the dash would read about 56.5. Owners report correcting the error by reprogramming the tire size in the truck’s module with FORScan. Check the procedure for your model year before you change anything.
One more cost comes with upsizing, and it hangs on your tailgate.
3 Spare Tire Problems After Upsizing Your Bronco
Your factory spare stops matching the moment you upsize. Base trims carry a 255/70R16 spare on a steel wheel, while Sasquatch trucks carry a full size fifth wheel and tire.
Mismatched Spare Size
A spare with a different diameter than the other three tires loads the drivetrain on a four wheel drive truck. Treat a mismatched spare as a get you to a tire shop tire, not a daily one.
Different Wheel Offset
Sasquatch wheels are ET30 and standard wheels are ET55, so a Base steel spare does not sit where a Sasquatch wheel does. Owners advise against using a standard wheel as a Sasquatch spare because the offset changes how the tire sits against the suspension.
Tailgate Weight and Cover Fit
Big spares are heavy. The 37 inch KO2 weighs roughly 65 to 71 pounds depending on the source, and Ford reinforced the Raptor’s rear spare carrier because of the wheel weight. Tire covers fit by tire diameter, so a new size means a new cover. Rotating all five tires keeps a full size spare wearing with the rest.
If you are ready to buy, these are the sizes we would start with.
3 Best Tire Choices for Ford Bronco by Size
We would start with these three, matched to the size chart above. Each pairs a size with the use it fits best.
| Size | Tire | Load Range | Best For | Buy |
|---|---|---|---|---|
| LT285/70R17 | BFGoodrich All-Terrain T/A KO2 116/113Q | C | 33 inch upgrade for standard trims | Check Price |
| LT315/70R17 | Goodyear Wrangler Territory MT 113/110S | C | Matching Sasquatch factory tires | Check Price |
| 37×12.50R17 | BFGoodrich All-Terrain T/A KO2 116S | C | Raptor size and big tire builds | Check Price |
The KO2 in LT285/70R17 is a Badlands tire option, so it matches what Ford already fits at this size. The listing shows a severe snow rating, which helps if you drive in winter.
The Territory MT is the factory Sasquatch tire, so replacing it keeps your speedometer and gearing exactly as Ford set them. It is a mud terrain design, so expect more road noise than an all-terrain.
The 37×12.50R17 KO2 is the Raptor’s factory tire. Tiresize.com lists a 3,525 pound max load and 50 psi max pressure with an 8.5 to 11 inch rim range, so it suits a 17×8.5 wheel. Non Raptor trucks need the changes covered above.
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Your Bronco Tire Size Answer in 3 Quick Rules
The Ford Bronco tire size chart comes down to three rules.
- Trim plus Sasquatch decides your size. Standard trims run 30 to 33 inch tires, Sasquatch trims run LT315/70R17, and the Raptor runs 37×12.50R17.
- 33 inch tires are the safe upgrade. 35s need a check of the crash bars, fender liners, and sway bar. 37s need real modification on any non Raptor trim.
- Fix your speedometer after you upsize. A 35 inch tire reads about 7 percent low.
Check your door jamb placard, then match your size to the chart before you order tires.
Common Questions About Ford Bronco Tire Sizes
What Size Tires Come on a Stock Ford Bronco
It depends on trim. Base uses 255/70R16, Big Bend 255/75R17, Black Diamond LT265/70R17, Outer Banks 255/70R18, and Badlands LT285/70R17. Sasquatch trims use LT315/70R17. Confirm your exact size on the driver door jamb placard before you order, because a previous owner may have changed the tires.
What Size Tires Does the Bronco Sasquatch Package Have
The Sasquatch Package uses LT315/70R17 Goodyear Wrangler Territory MT tires on 17×8.5 beadlock capable wheels. They measure about 34.4 inches tall, and Ford markets them as 35 inch tires. The package is standard on Wildtrak, Everglades, and Heritage Limited, and it is optional on most other trims.
Can You Put 35 Inch Tires on a Bronco Without Sasquatch
Sometimes. Some fitment guides say Big Bend, Black Diamond, and Outer Banks can take 35s without suspension changes, while others call for a 2 inch leveling kit. Check the front crash bars, fender liners, and sway bar for contact before you commit.
Are 35 Inch Tires and Sasquatch Tires the Same Size
Nearly. The Sasquatch LT315/70R17 measures 34.4 inches tall, and a 35×12.50R17 is a nominal 35 inches. Owners report the real gap is well under an inch and varies by brand. Load range often differs between the two sizes, so compare it before you buy.
What Size Tires Does the Bronco Raptor Use
The Raptor uses BFGoodrich All-Terrain T/A KO2 tires in 37×12.50R17 on 17×8.5 wheels. That KO2 measures about 36.5 inches tall, so the tires are a little shorter than the 37 inch name suggests. The Raptor bolt pattern is 6×135, so standard Bronco wheels do not fit it.
What Size Tires Does the Ford Bronco Sport Use
Bronco Sport 1.5L trims use 225/65R17 or 225/60R18, and 2.0L trims use 225/65R17 or 235/65R17, per Wheel-Size. The wheels are 17 or 18 inches, and the bolt pattern is 5×108. The 2025 Sasquatch Package adds all-terrain tires around 29 inches tall.
