Tire fitment
The 2024 Ford Explorer base tire size is 255/65R18 — 255 mm wide with a 65% aspect ratio on 18″ rims. 3 OEM sizes are available across trims.
2024 Ford Explorer
255/65R1831.1″ overall diameter · 165.8 mm sidewall · ~650 rev/mi
| Trim | Tire size | Rim | Diameter | vs Base |
|---|---|---|---|---|
| Active ★ | 255/65R18 | 8×18″ | 31.1″ (788.7 mm) | — |
| ST-Line/Platinum | 255/55R20 | 8×20″ | 31″ (788.5 mm) | -0.03% |
| ST | 275/45R21 | 9×21″ | 30.7″ (780.9 mm) | -0.99% |
The 2024 Ford Explorer ships with 255/65R18 tires on the base trim — that's an overall diameter of 31.1″. The 255 mm width and 65% sidewall ratio give you 165.8 mm of sidewall cushion between the rim and the road.
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 2024 Ford Explorer; verify against your door-jamb placard or owner's manual.
The base 2024 Ford Explorer uses 255/65R18 tires — 255 mm wide, 65% aspect ratio, on 18-inch rims. The overall diameter is 31.1″ (788.7 mm). Higher trims use different sizes — see the table above. Confirm against your door-jamb placard.
Yes, within limits. Keep the overall diameter within about 3% of 31.1″ to avoid speedometer error and clearance issues. A wider tire may improve grip, but match the load and speed ratings your Explorer requires.
255/65R18 tires have an overall diameter of 31.1″ (788.7 mm), with a 165.8 mm sidewall height. That's about 650 revolutions per mile.
The 2024 Ford Explorer 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.