If you’re shopping for replacement tires for a 2017 Ford Explorer Sport, fitment should come before brand, tread pattern, or price. A common factory all-season setup is 255/50R20 105H at all four corners, but you should always confirm the tire-and-loading information label on your own vehicle before ordering. The right replacement should fit your wheels and meet or exceed the required load and speed ratings while matching the weather and driving conditions you face most often.
Quick Fitment Verdict:
Start with the tire size, load index, and speed rating shown on your Explorer Sport’s door-jamb placard. For many 2017 Explorer Sport models with the factory 20-inch all-season setup, that means 255/50R20 with a 105H service description. Do not assume a 15-, 16-, or 17-inch tire is compatible simply because its overall diameter looks similar; changing wheel diameter requires separate wheel, brake-clearance, and vehicle-fitment verification.
2017 Ford Explorer Sport Tire Fitment Basics
Tire fitment involves more than matching one number. Before buying, compare the complete tire designation on your current tire and vehicle placard. You should also confirm wheel diameter, load index, speed rating, tire pressure requirements, and whether your vehicle still has its original wheels.
| Fitment Item | What to Check | Why It Matters |
|---|---|---|
| Tire size | Check the door placard and existing factory-size tire. A common Sport setup is 255/50R20. | Controls wheel compatibility, clearance, overall diameter, and vehicle behavior. |
| Load index | Match or exceed the requirement listed for your vehicle. | Helps ensure the tire can safely support the vehicle and its intended load. |
| Speed rating | Use the rating specified for your configuration or a suitable higher rating. | A lower rating can change the tire’s heat and performance capability. |
| Wheel diameter | The last number in the tire size must match the wheel unless you are intentionally replacing the wheels. | A 17-inch tire cannot mount on a 20-inch wheel. |
| TPMS compatibility | Confirm sensor and valve compatibility when replacing wheels. | Helps preserve the factory tire-pressure monitoring function. |
Factors to Consider When Choosing Tires for a 2017 Ford Explorer Sport
The best replacement depends on more than the brand name. Start with correct fitment, then compare tire category, wet-weather performance, winter needs, comfort, tread life, and the type of driving you do most often.
Tire Size and Fitment
For many 2017 Ford Explorer Sport models equipped with the factory 20-inch all-season setup, 255/50R20 is the key size to look for. However, the door-jamb tire placard on your vehicle should be the final reference because wheels or equipment may have been changed during the vehicle’s life.
Do not choose a tire only because its outside diameter is close to the factory tire. A different rim diameter means you also need different wheels, and those wheels must clear the brakes, fit the hubs correctly, have appropriate width and offset, and work properly with the suspension and body clearance.
If your Explorer has aftermarket wheels, identify the wheel size and specifications before ordering tires. When in doubt, have a qualified tire shop verify the complete wheel-and-tire combination.
Load and Speed Ratings
The numbers and letters after the tire size are important. For example, a service description such as 105H contains both a load index and a speed rating.
Your replacement tire should meet or exceed the requirements specified for your vehicle. Avoid choosing a lower load index or lower speed rating simply because the tire is cheaper or available in the same physical size. Two 255/50R20 tires can have different service descriptions and are not automatically equivalent replacements.
Check the driver-side door placard and, when necessary, the owner’s manual or a professional fitment database before purchasing.
All-Season, All-Weather, Winter, or Summer Tires
All-season tires are usually the most practical choice for drivers who spend most of their time on paved roads and experience moderate seasonal changes. They aim to balance dry handling, wet traction, tread life, comfort, and light-winter capability.
All-weather tires can be useful when you need stronger winter capability without maintaining a separate seasonal tire set. When snow performance is important, look for tires carrying the three-peak mountain snowflake symbol rather than relying only on an M+S marking.
Dedicated winter tires are the better choice when you routinely drive in significant snow, ice, or sustained cold temperatures. Their compounds and tread designs are developed specifically for cold-weather traction.
Summer tires prioritize warm-weather dry and wet performance but are not intended for freezing temperatures or snow. If your Explorer is equipped with a performance-oriented summer setup, plan for a suitable cold-weather tire solution before temperatures drop.
Wet and Snow Traction
For frequent rain, look for tread designs with effective circumferential channels, lateral grooves, and adequate siping to help move water away from the contact patch. Tire compound and tread design matter as much as raw tread depth.
For winter use, do not judge snow capability from an aggressive-looking tread alone. Check the tire’s actual category and severe-snow certification when applicable. An all-terrain appearance does not automatically mean a tire will provide the cold-weather braking and ice traction of a dedicated winter design.
UTQG traction grades can provide limited comparison information, but they should not be treated as a complete measurement of snow traction, hydroplaning resistance, cornering performance, or real-world braking in every condition.
Ride Comfort and Road Noise
If your Explorer Sport spends most of its time commuting or traveling on highways, touring-oriented tread designs can provide a quieter and smoother experience than aggressive off-road patterns.
Larger tread blocks and open voids can improve loose-surface traction but may increase road noise and rolling resistance. Heavier-duty tire construction can also change steering response and ride feel.
Maintain the cold tire pressure specified on the vehicle placard. Significant underinflation can increase sidewall flex, heat buildup, abnormal wear, and sluggish handling, while excessive inflation can reduce ride comfort and alter the contact patch.
Tread Life and Warranty
Mileage warranties can be useful when comparing tires in the same category, but the longest advertised warranty is not automatically the best choice. Tread life depends on alignment, inflation, rotation, driving style, road surface, climate, vehicle loading, and the tire compound itself.
Before buying, read the manufacturer’s current warranty terms. Some treadwear warranties require regular rotation records or apply prorated credit rather than a free replacement.
Towing and Heavy Loads
If you tow or regularly carry heavy passengers or cargo, do not choose tires based on an advertised “heavy-duty” description alone. The replacement tire still needs the correct size and an adequate load index for your Explorer.
Vehicle towing limits, axle limits, tire load capacity, wheel capacity, and inflation requirements all work together. A higher-capacity tire does not increase the vehicle manufacturer’s rated towing or payload limit.
Before You Buy: Quick Checklist
- Read the tire size on the driver-side door-jamb placard.
- Confirm whether the vehicle still has its original wheels.
- Match the wheel diameter exactly unless you are intentionally buying different wheels.
- Match or exceed the required load index.
- Match or exceed the appropriate speed rating.
- Choose all-season, all-weather, winter, or summer performance based on your climate.
- Check whether the tire has the snow certification you need.
- Verify wheel width and approved rim-width range when using aftermarket wheels.
- Confirm TPMS compatibility if wheels or sensors are being replaced.
- Check current manufacturer warranty terms rather than relying on old marketplace copy.
- Have uncertain wheel, brake-clearance, or modified-suspension fitment checked professionally before ordering.
TPMS and Wheel Changes
The Explorer Sport uses a tire-pressure monitoring system, but TPMS sensors are separate components from the tires themselves. You do not normally need to buy new sensors simply because you are replacing worn tires.
Existing sensors can often remain in service if they are functioning correctly and the wheels remain compatible. If you install a separate wheel set, damaged sensors, or wheels with different valve requirements, new compatible sensors may be needed.
Sensor installation, relearning, or programming requirements can vary, so confirm compatibility for the exact vehicle and sensor before ordering.
Frequently Asked Questions
What Size Tires Fit a 2017 Ford Explorer Sport?
A common factory all-season configuration is 255/50R20 at all four corners. Your vehicle’s door-jamb tire placard is the best source for the exact original specification because equipment and wheels can vary or may have been changed by a previous owner.
Does the 2017 Explorer Sport Use Staggered Tires?
The common 255/50R20 factory all-season configuration is not a staggered setup; the same size is used front and rear. Do not create a staggered combination unless your specific vehicle configuration, wheel setup, and manufacturer guidance support it.
Can I Install 17- or 18-Inch Tires on My Explorer Sport?
Not on the factory 20-inch wheels. A 17-inch tire requires a 17-inch wheel, and an 18-inch tire requires an 18-inch wheel. A wheel-downsize package must also be checked for brake clearance, hub fit, wheel width, offset, load capacity, overall tire diameter, and TPMS compatibility. Do not assume a smaller wheel will fit just because a tire calculator shows a similar outside diameter.
Can I Use a Lower Speed-Rated Tire?
For a straightforward replacement, use the speed rating specified for your vehicle or an appropriate higher rating. A tire with the same physical size but a lower speed rating is not automatically an equivalent replacement. Confirm any proposed downgrade with the vehicle manufacturer or a qualified tire professional.
Can I Keep the Stock TPMS Sensors When Changing Tires?
Usually, replacing tires alone does not require replacing working TPMS sensors. A tire shop can inspect the sensors and valve components during tire service. If you are changing wheels, verify that the wheels and sensors are compatible and complete any required relearn procedure afterward.
What Type of Tire Is Best for Snow?
If you regularly encounter substantial snow, ice, or prolonged freezing temperatures, dedicated winter tires generally provide the strongest cold-weather focus. An all-weather tire carrying the three-peak mountain snowflake symbol can be a practical year-round alternative for drivers who need more winter capability than a conventional all-season tire.
Can I Use All-Terrain Tires on an Explorer Sport?
Potentially, but only when the tire is available in a properly compatible size and service rating for your wheels and vehicle. Do not install an oversized light-truck or different-rim-diameter all-terrain tire solely because it has an aggressive tread or high load capacity. Check clearance, wheel compatibility, overall diameter, handling effects, and manufacturer fitment first.
Can I Use Snow Chains?
Chain use depends on vehicle clearance, tire size, the owner’s manual, chain design, and local law. Do not assume every tire and wheel combination has enough clearance. Check the vehicle manufacturer’s instructions before installing chains or other traction devices, and follow the rules for the roads where you will be driving.
How Often Should Explorer Sport Tires Be Rotated?
Follow the rotation interval and pattern recommended in your vehicle and tire documentation. Regular rotation helps promote more even wear, especially on an AWD vehicle. A tire shop should also inspect tread depth, pressure, alignment symptoms, and unusual wear during service.
Final Recommendation
Start with fitment, not the product name.
If your 2017 Ford Explorer Sport still uses its common factory 20-inch all-season setup, begin your search with 255/50R20 and confirm the required load index and speed rating on the vehicle placard. For many stock configurations, that means a 105H-equivalent or appropriately higher service description.
After fitment is confirmed, choose the tire category that suits your driving: a comfortable all-season for everyday road use, an all-weather or winter tire for stronger cold-weather capability, or a correctly fitted performance tire when warm-weather handling is the priority. Avoid mismatched wheel diameters, lower-than-required service ratings, and tire listings that claim compatibility without verifying the complete vehicle specification.
Conclusion
The most important step when buying tires for a 2017 Ford Explorer Sport is verifying the correct size, wheel diameter, load index, and speed rating before comparing brands. A tire can look appropriate on paper and still be the wrong replacement if it requires a different wheel or does not meet the vehicle’s service requirements.
Use your door-jamb placard as the primary fitment reference, consider how much rain, snow, highway driving, towing, or performance driving you actually encounter, and verify any nonstandard wheel-and-tire setup before purchasing. That approach gives you a much better chance of preserving the Explorer Sport’s intended handling, braking, ride quality, and tire life.
