Tire fitment
The 2024-2025 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.
2024-2025 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 2024-2025 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 2024-2025 Ford Explorer; verify against your door-jamb placard or owner's manual.
The base 2024-2025 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 2024-2025 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.