2018 Ford F150 Bolt Pattern – The Definitive Guide To Proper Wheel
The 2018 Ford F-150 features a 6x135mm bolt pattern, which is the standard configuration for Ford’s flagship pickup across the 13th generation. Knowing this specific measurement is essential for ensuring that any aftermarket wheels you purchase will seat safely and securely against the hub. This guide breaks down everything from lug nut torque to offset considerations to help you customize your truck with confidence.
Selecting new wheels for your truck is one of the most rewarding upgrades you can make. It changes the stance, improves off-road capability, and gives your F-150 a personalized look. However, the technical side of wheel fitment can feel like a maze of metric numbers and clearance issues.
If you are worried about buying a set of rims that do not fit, you are in the right place. We will walk through the exact specifications of the 2018 ford f150 bolt pattern to ensure your DIY project goes smoothly. By the end of this guide, you will know exactly what to look for when browsing the wheel catalogs.
We will cover the critical measurements, the tools you need for a safe installation, and the common mistakes that lead to vibrations or rubbing. Let’s get your truck set up with the right gear for the road or the trail.
Understanding the 2018 ford f150 bolt pattern
The term “bolt pattern” refers to the number of lug nut holes and the diameter of the circle they form. For your truck, the 2018 ford f150 bolt pattern is 6x135mm. This means the wheel has six holes arranged in a circle with a diameter of 135 millimeters.
In the United States, you might occasionally see this expressed in imperial units as 6×5.31 inches. However, the automotive industry almost exclusively uses the metric 6x135mm designation for Ford trucks. This pattern is shared with the Ford Expedition and the Lincoln Navigator from the same era.
It is important to note that this pattern is unique to Ford. While many other trucks, like the Chevy Silverado or Toyota Tundra, also use a six-lug design, their spacing is typically 6×139.7mm. Attempting to force a wheel with the wrong pattern onto your F-150 will damage the wheel studs and compromise your safety.
How to Measure a Six-Lug Pattern
If you have a set of wheels and you are unsure of their fitment, you can measure them yourself. For an even-numbered bolt pattern like the six-lug setup on your Ford, measure from the center of one hole to the center of the hole directly opposite it.
Use a high-quality digital caliper for the most accurate reading. If you use a standard tape measure, ensure you are as precise as possible. A few millimeters of difference might seem small, but it determines whether the wheel seats properly on the hub assembly.
Always double-check the manufacturer’s stamping on the back of the wheel. Most reputable brands will stamp the bolt pattern, offset, and load rating directly into the metal for easy identification.
Lug Nut Specifications and Thread Pitch
The bolt pattern is only half of the equation when it comes to securing your wheels. You also need to use the correct lug nuts. For the 2018 model year, Ford uses M14 x 1.5 lug nuts.
This “M14” indicates a 14mm diameter, and the “1.5” refers to the thread pitch, or the distance between each thread. Older F-150 models used a different thread pitch, so do not assume that nuts from a 2014 model will fit your 2018 truck.
When buying aftermarket wheels, the “seat” of the lug nut is vital. Most factory Ford wheels use a large acorn or conical seat. Many aftermarket wheels require a “tuner style” nut or a different seating profile to fit into narrower lug holes.
Torque Requirements for Safety
Properly tightening your lug nuts is the most critical safety step in any wheel swap. For a 2018 F-150, the factory-recommended torque spec is 150 lb-ft (204 Nm). Under-tightening can cause the wheel to wobble, while over-tightening can stretch or snap the wheel studs.
Always use a calibrated torque wrench rather than an impact gun for the final tightening. Tighten the nuts in a “star pattern” or “cross pattern” to ensure the wheel applies even pressure to the brake rotor and hub. This prevents warping and ensures a flush fit.
After installing new wheels, drive for about 50 to 100 miles and then re-torque the nuts. Heat cycles and road vibrations can cause new hardware to settle, and a quick check ensures everything remains tight.
Center Bore and Hub-Centric Design
The center bore is the large hole in the middle of the wheel that slides over the hub of the truck. The 2018 F-150 has a center bore of 87.1mm. This is a “hub-centric” design, meaning the hub carries the weight of the truck, not just the lug nuts.
When the wheel’s center hole fits perfectly over the hub, it ensures the wheel is perfectly centered. This eliminates vibrations at high speeds. Many aftermarket wheels are “lug-centric,” meaning they have a larger center bore designed to fit multiple vehicle types.
If you buy wheels with a bore larger than 87.1mm, you should use hub-centric rings. These simple plastic or metal rings fill the gap between the truck’s hub and the wheel’s center bore. They are inexpensive and significantly improve ride quality by preventing “wheel shimmy.”
Why Avoid Lug-Centric Setups?
While lug-centric wheels can work, they put all the shear stress of the vehicle’s weight on the wheel studs. In off-road scenarios or heavy towing conditions, this increases the risk of stud failure. Using hub-centric rings effectively converts a lug-centric wheel into a hub-centric one.
Check the center bore of any wheel you consider. If the bore is smaller than 87.1mm, the wheel will not fit onto the truck at all. If it is larger, ensure you have the correct rings ready for the installation day.
Offset and Backspacing Explained
Beyond the 2018 ford f150 bolt pattern, you must consider how far the wheel sits inside or outside the fender. This is determined by offset and backspacing. Offset is measured in millimeters and describes the distance from the wheel’s mounting surface to its actual centerline.
Stock 2018 F-150 wheels typically have a high positive offset, usually around +34mm to +44mm. This keeps the wheels tucked neatly inside the wheel wells. If you want a “poked” look or need more clearance for wider tires, you might look for a lower or even negative offset.
Backspacing is a similar measurement but is taken from the back edge of the wheel to the mounting surface. It is usually expressed in inches. For most F-150 owners, a backspacing of 5 to 6 inches is common for aftermarket setups.
The Risks of Incorrect Offset
Choosing the wrong offset can lead to several problems. If the offset is too high (positive), the tire may rub against the upper control arm or the inner fender liner. This can damage the tire sidewall and affect your turning radius.
If the offset is too low (negative), the wheels will stick out past the fenders. While this looks aggressive, it flings road debris against your paint and can lead to rubbing on the “crash bars” found in the 2018 F-150’s wheel wells. Always measure your clearance before committing to a wide wheel setup.
Upgrading Your Wheels: Practical Tips for Off-Roaders
If you take your truck off the pavement, the 2018 ford f150 bolt pattern opens up a world of heavy-duty options. Off-road enthusiasts often look for “beadlock-capable” wheels or wheels with reinforced lips. These allow you to run lower tire pressures for better traction in sand or mud.
When selecting off-road wheels, consider the weight. Heavy “show” wheels can increase unsprung mass, which makes your suspension work harder and slows down your braking response. Lightweight alloy wheels are often preferred for technical trail driving.
Many owners choose to swap their factory 20-inch rims for 17-inch or 18-inch wheels. A smaller wheel allows for a “meatier” tire with more sidewall. This extra rubber acts as a secondary shock absorber, protecting your rims from rocks and providing a smoother ride on washboard roads.
Clearing the Crash Bars
The 2018 F-150 includes structural safety members known as crash bars located in front of and behind the front tires. When moving to a larger tire or a wheel with a lower offset, these bars are the first thing the tires will hit during a turn.
Some DIYers choose to “spread” the crash bars using a port-a-power tool or remove them entirely. However, keep in mind that these are safety features designed to protect your legs in a front-end collision. We recommend choosing a wheel and tire combo that clears these bars without modification whenever possible.
Common Pitfalls When Buying Aftermarket Rims
One of the most common mistakes is confusing the F-150 bolt pattern with the F-250 pattern. While both are Ford trucks, the F-250 uses an 8-lug pattern (8x170mm). Always verify that you are looking at “half-ton” truck wheels during your search.
Another pitfall is ignoring the load rating of the wheel. Your F-150 is a workhorse. If you plan on towing a heavy trailer or hauling a bed full of gravel, your wheels must be rated to handle that weight. Most cast aluminum wheels are plenty strong, but some “budget” wheels may have lower ratings than the factory equipment.
Finally, do not forget the TPMS (Tire Pressure Monitoring System) sensors. Your 2018 F-150 uses sensors inside the wheel to monitor air pressure. When you buy new wheels, you will either need to move your old sensors over or buy a new set and sync them to the truck’s computer.
Checking for Brake Clearance
If you have upgraded your brakes to a “Big Brake Kit,” some 17-inch wheels might not clear the larger calipers. Always check the inner diameter of the wheel to ensure it can spin freely without contacting the braking hardware. A minimum of 2-3mm of clearance is generally recommended for safety.
Step-by-Step DIY Wheel Installation
- Park on a level surface: Engage the parking brake and chock the rear wheels for safety.
- Loosen the lug nuts: Use a 21mm socket and a breaker bar to loosen the nuts while the truck is still on the ground.
- Jack up the truck: Use a floor jack on a secure frame point and always support the vehicle with jack stands.
- Remove the old wheel: Take off the lug nuts and pull the wheel straight off the studs.
- Clean the hub: Use a wire brush to remove any rust or debris from the hub surface to ensure a flat mounting area.
- Mount the new wheel: Slide the wheel onto the studs. If using hub-centric rings, place them on the hub first.
- Hand-tighten: Thread the lug nuts on by hand to avoid cross-threading.
- Lower and torque: Lower the truck until the tire touches the ground, then use your torque wrench to hit 150 lb-ft in a star pattern.
Frequently Asked Questions About the 2018 Ford F150 Bolt Pattern
Can I use wheels from an older F-150 on my 2018?
Yes, wheels from 2004 to 2023 F-150 models generally use the same 6x135mm pattern. However, the lug nut thread pitch changed in 2015. You can use the wheels, but you must use the 2018-specific M14x1.5 lug nuts.
Will Raptor wheels fit a standard 2018 F-150?
Yes, Ford Raptor wheels use the same 6x135mm bolt pattern. They are a popular upgrade because they are often forged and very strong. Just be aware that Raptor tires are 35 inches tall and may require a leveling kit to fit a standard F-150.
Is 6×135 the same as 6×5.5?
No, they are not the same. 6×5.5 inches is approximately 6×139.7mm, which is the pattern used by Chevy and RAM. These wheels will not fit your 2018 Ford F-150 without unsafe adapters.
Do I need new lug nuts for aftermarket wheels?
In most cases, yes. Factory lug nuts are often too wide to fit into the smaller lug holes of aftermarket wheels. You will likely need “conical seat” lug nuts that match the M14x1.5 thread of your truck.
Conclusion
Getting the 2018 ford f150 bolt pattern right is the foundation of a successful truck build. By sticking to the 6x135mm specification and ensuring a hub-centric fit, you protect your truck’s performance and your own safety. Remember to always use a torque wrench to reach that 150 lb-ft mark and check your clearances if you are going for an aggressive offset.
Whether you are hitting the trails or just want a better look for the commute, the right wheels make all the difference. Take your time, measure twice, and enjoy the new look of your Ford. Stay safe and stay comfortable on your next adventure!
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