2023 Ford Bronco: the quick answer
The 2023 Ford Bronco ships with 255/75R17 tires on the base trim — that's an overall diameter of 32.1″. The 255 mm width and 75% sidewall ratio give you 191.3 mm of sidewall cushion between the rim and the road.
Tire fitment
2023 Ford Bronco tire size
The 2023 Ford Bronco base tire size is 255/75R17 — 255 mm wide with a 75% aspect ratio on 17″ rims. 5 OEM sizes are available across trims.
2023 Ford Bronco
255/75R1732.1″ overall diameter · 191.3 mm sidewall · ~629 rev/mi
| Trim | Tire size | Rim | Diameter | vs Base |
|---|---|---|---|---|
| Big Bend ★ | 255/75R17 | 8×17″ | 32.1″ (814.3 mm) | — |
| Black Diamond | 265/70R17 | 8×17″ | 31.6″ (802.8 mm) | -1.41% |
| Outer Banks | 255/70R18 | 8×18″ | 32.1″ (814.2 mm) | -0.01% |
| Badlands | 285/70R17 | 8×17″ | 32.7″ (830.8 mm) | +2.03% |
| Wildtrak | 315/70R17 | 8.5×17″ | 34.4″ (872.8 mm) | +7.18% |
35-inch. Raptor uses 37-inch (37x12.50R17).
Before you buy tires
Match the load index and speed rating from your door-jamb placard — not just the size. If you're switching sizes, keep the overall diameter within ~3% to avoid speedometer error and potential ABS/traction-control issues.
Factory fitment for the 2023 Ford Bronco; verify against your door-jamb placard or owner's manual.
FAQ
What tire size does the 2023 Ford Bronco use?
The base 2023 Ford Bronco uses 255/75R17 tires — 255 mm wide, 75% aspect ratio, on 17-inch rims. The overall diameter is 32.1″ (814.3 mm). Higher trims use different sizes — see the table above. Confirm against your door-jamb placard.
Can I use a different tire size on my 2023 Bronco?
Yes, within limits. Keep the overall diameter within about 3% of 32.1″ to avoid speedometer error and clearance issues. A wider tire may improve grip, but match the load and speed ratings your Bronco requires.
What is the overall diameter of 255/75R17 tires?
255/75R17 tires have an overall diameter of 32.1″ (814.3 mm), with a 191.3 mm sidewall height. That's about 629 revolutions per mile.
The 2023 Ford Bronco tire sizes shown are OEM factory fitments. Confirm your exact tire size, load rating, and speed rating against the door-jamb placard or owner's manual before buying tires.