F-150 Tire Size by Trim: Why Your Neighbor's Size Is Wrong for Your Truck

For 2026, Ford fits five standard-line F-150 sizes: 245/70R17, 265/70R17, 265/60R18, 275/65R18, and 275/60R20. The Tremor, the Raptor, two C-rated LT options, and a 22-inch package add more. The variable most size charts skip is load. The standard-load versions of those five sizes run from a 110 to a 116 load index, which works out to 2,125 to 2,505 pounds per tire once a passenger tire is counted for truck duty. Your neighbor's size is only right for your truck if it carries what your placard requires.

If you've searched this before and gotten a list of sizes with "check your door jamb" at the bottom, that list isn't wrong. It's just half the answer. The part nobody puts in front of you is the load number attached to each size, and how much it moves from one F-150 to the next. I spend most of my week matching load tables to trucks, so here's the full picture, size and capacity together.

What Size Tires Come on Each F-150 Trim?

Ford's 2026 F-150 technical specifications list every factory tire fitment by trim and drivetrain. The table below pairs each one with its overall diameter and the load rating that usually comes with it.

Trim and Drivetrain	Factory Size	Diameter	Typical Load Rating	Rated Load per Tire	Counted on an F-150
XL, XLT 4x2 (all-season)	245/70R17	30.5 in	110, standard load	2,337 lb	2,125 lb
XL 4x4 (all-terrain)	265/70R17	31.6 in	115, standard load	2,679 lb	2,435 lb
STX, Lariat 4x2; optional on XLT 4x2 (all-season)	265/60R18	30.5 in	110, standard load	2,337 lb	2,125 lb
STX, XLT, Lariat 4x4 (all-terrain)	275/65R18	32.1 in	116, standard load	2,756 lb	2,505 lb
King Ranch, Platinum; optional on STX, Lariat	275/60R20	33.0 in	115, standard load	2,679 lb	2,435 lb
Tremor (all-terrain)	275/70R18	33.2 in	116, standard load	2,756 lb	2,505 lb
Optional on XL Fleet and FX4 Package	LT265/70R17 C	31.6 in	112, Load Range C	2,469 lb	2,469 lb
Optional on XLT 4x4	LT265/70R18 C	32.6 in	113, Load Range C	2,535 lb	2,535 lb
Optional on STX Lobo Package, King Ranch, Platinum	275/50R22	32.8 in	111, standard load	2,403 lb	2,185 lb
Raptor	LT315/70R17	34.4 in	Light truck; check placard	Varies by load range	Full rated load
Raptor 37 Package	37x12.50R17	37 in	Check placard	Varies	Varies

"Typical load rating" is the rating most common for that size and construction across the tire market; your door placard lists the exact requirement for your truck. "Counted on an F-150" divides passenger-tire ratings by 1.10, explained below. Diameters are nominal.

The five standard-line sizes span 380 pounds per tire

Line up the five standard-line fitments and the counted capacity runs from 2,125 pounds (245/70R17 and 265/60R18) to 2,505 pounds (275/65R18). That's a 380-pound gap per tire and 1,520 pounds across four tires, all on trucks wearing the same badge. Two of those sizes even share the same 30.5-inch diameter on different wheels, which is why "it's the same height" tells you nothing about load.

The specialty fitments

Tremor gets its own 33-inch all-terrain. Ford lists two C-rated light truck options: LT265/70R17 C with the FX4 Package or on XL Fleet trucks, and LT265/70R18 C on the XLT 4x4. The 22-inch 275/50R22 is optional on the STX Lobo Package, King Ranch, and Platinum. The Raptor rides on LT315/70R17, with a 37-inch package on top of that.

Earlier 14th-generation trucks

Most 2021 to 2025 F-150s share much of this lineup, but packages changed along the way. The 2021 to 2023 Heavy-Duty Payload Package, for example, paired 18-inch wheels with LT265/70R18 C all-terrains, and dealer-published 2023 specs listed a maximum F-150 payload of 3,315 pounds, well above the 2026 ceiling. If your truck is a few years old, the placard on the door is the only reference that counts.

Why Can Two F-150s Need Different Tire Sizes?

Because "F-150 XLT" describes a trim, not a tire. Drivetrain, packages, and engine all change what Ford bolts on at the factory, and two trucks with the same badge on the tailgate can leave the plant on completely different rubber.

4x2 and 4x4 get different tires

The 2026 XLT is the cleanest example. The 4x2 comes on 245/70R17 all-seasons. The 4x4 comes on 275/65R18 all-terrains. That's a 1.57-inch difference in diameter and a 419-pound difference in rated load per tire. Park those two XLTs in the same driveway and the owners are shopping for two different tires.

Packages change the tire, too

Order the FX4 Package and your truck may carry LT265/70R17 C instead of a passenger tire. Tick the Lobo Package and you're on 22s. Add the optional 20-inch wheels to a Lariat and you're shopping 275/60R20. The window sticker and the build sheet tell you which packages your truck actually has.

Payload varies by configuration

Ford's own 2026 spec sheet puts maximum payload anywhere from 1,405 pounds on the Raptor to 2,440 pounds on a properly equipped 3.5L EcoBoost 4x2, and notes that the label on the doorjamb shows the carrying capacity of a specific truck. Different payloads call for different tire capacities. That's the whole reason the sizes and load ratings differ.

What Load Index Does an F-150 Need?

At minimum, whatever your truck's placard specifies. More if you regularly load it near its limits. There's no single F-150 answer, and anyone who gives you one is guessing about your configuration.

Start with the placard

The tire and loading information placard, required under Federal Motor Vehicle Safety Standard No. 110, sits in the driver's door opening. It lists the original tire size, the recommended cold inflation pressure, and the combined weight of occupants and cargo the truck should never exceed. The certification label nearby adds the gross vehicle weight rating (GVWR) and the gross axle weight ratings (GAWR).

Passenger tires count for less on a pickup

When a passenger tire goes on a light truck, its rated load is divided by 1.10. Tire makers including Toyo and Nitto trace that factor to Federal Motor Vehicle Safety Standard No. 120 and the Tire and Rim Association Yearbook. It applies to P-metric and metric (no-prefix) passenger tires alike, standard load or extra load. LT tires take no derate. Our P-metric vs. LT tire guide walks through the full math.

A worked check on one axle

Here's how that plays out, using a hypothetical rear GAWR of 4,000 pounds. Split across two tires, each rear tire has to carry 2,000 pounds, and a 5 percent cushion raises the target to 2,100. A metric 245/70R17 at 110 counts as 2,125 pounds on the truck, so it clears. A P245/70R17 at 108 counts as 2,005 pounds. It technically covers the axle rating, but it misses the cushion by 95 pounds per tire. Same size on the sidewall, different answer at the scale. Run the same math with the real numbers from your own certification label before you buy.

Check your margin against the truck's weight rating

Four tires' worth of counted capacity should comfortably exceed your GVWR, and each axle's pair should exceed that axle's GAWR. A common shop check builds in a 5 percent cushion on top, which we break down in the 105 percent rule for tires.

Is a P-Metric Tire the Same as the F-150 Factory Size?

Same size, often a different load. Ford's 2026 spec sheet lists F-150 sizes without a "P" prefix, and in these sizes the P-metric version of a tire usually carries a lower load index than the metric version. That's the most common way a neighbor's "same size" ends up short on your truck.

Size	P-Metric Standard Load	Metric Standard Load	Extra Load	LT Load Range E
245/70R17	108 (2,205 lb)	110 (2,337 lb)	114 (2,601 lb)	119 (3,042 lb)
265/70R17	113 (2,535 lb)	115 (2,679 lb)	116 (2,756 lb)	121 (3,197 lb)
265/60R18	109 (2,271 lb)	110 (2,337 lb)	114 (2,601 lb)	119 (3,042 lb)
275/65R18	114 (2,601 lb)	116 (2,756 lb)	116 (2,756 lb)	123 (3,415 lb)
275/60R20	114 (2,601 lb)	115 (2,679 lb)	116 (2,756 lb)	123 (3,415 lb)
275/50R22	111 (2,403 lb)	111 (2,403 lb)	115 (2,679 lb)	119 (3,042 lb)

Values show the most common rating in each column across the tire market; individual tires vary. Passenger columns still take the 1.10 factor on a truck. The LT column does not.

The two-point gap

In 275/65R18, the size on most 2026 STX, XLT, and Lariat 4x4 trucks, P-metric versions most often carry a 114 while the metric versions carry a 116. That's 155 pounds of rated capacity per tire, or 140 pounds counted on the truck. Across four tires, a set that "matches the size" can come up 560 pounds short of what the truck left the factory with.

Extra Load closes the gap in some sizes

An Extra Load tire reaches a higher rating at a higher pressure. In 245/70R17 and 265/60R18, it jumps four points over metric standard load. In 275/65R18, it often matches the standard-load 116 exactly. Our guide to what XL means on a tire covers the pressure side of that trade.

Read the number, not the letters

Load range tells you the casing's pressure class. Load index tells you pounds. You need both to compare two tires honestly, and our breakdown of load range vs. load index shows how they fit together on the sidewall.

Are the C-Rated LT Tire Options an Upgrade?

In construction, yes. In capacity, barely. The C-rated options on the FX4 and XLT 4x4 give you a light truck casing, but their load numbers land very close to a passenger tire of similar size once that passenger tire is derated.

The capacity math

An LT265/70R17 C typically carries a 112, or 2,469 pounds, with no derate. The standard-load 265/70R17 it replaces carries a 115, which counts as 2,435 pounds on the truck. The difference is 34 pounds per tire. The LT265/70R18 C, typically a 113, carries 2,535 pounds, a hair more than the 2,505 counted for a standard-load 275/65R18.

What the C actually buys you

A tougher casing that resists punctures, bruising, and sidewall cuts on gravel and rock, plus a load rating that isn't discounted on a truck. That's worth having if your truck sees dirt roads or job sites. It just isn't a big capacity jump.

Don't swap a C-equipped truck back to passenger tires

If your placard lists an LT tire, the pressure on that placard was set for that LT tire. Keep LT construction at the same or higher load rating. If you load the truck hard, an LT Load Range E in the same size adds real reserve. In LT265/70R18, the E version commonly carries a 124, about 3,527 pounds per tire.

Can You Put 20-Inch or 22-Inch Tires on an 18-Inch F-150?

Ford offers both on the same platform, so the swap is common. The catch is load. The neighbor's 20s or 22s were chosen for the neighbor's truck, and the lower-profile sizes often carry less than your 18s.

275/60R20 instead of 275/65R18

The 20-inch size is 33.0 inches tall versus 32.1, about 2.9 percent larger, near the edge of the 3 percent range most shops use for size changes. A standard-load 275/60R20 typically carries a 115, counted as 2,435 pounds, versus 2,505 for the 18-inch 116. That's 70 pounds less per tire. An Extra Load 275/60R20 at 116 or 119 closes it.

275/50R22 instead of 275/65R18

This is where the neighbor's size really bites. A standard-load 275/50R22 typically carries a 111, counted as 2,185 pounds. That's 320 pounds less per tire than the 275/65R18 it replaces, or 1,280 pounds across the truck. The Extra Load version at 115 counts as 2,435 pounds and gets you most of the way back. On a 4x4 truck that came on 18s, choose the XL.

The wheels have a say

Width, offset, and the wheel's own load rating all matter before the tire does. If you're shopping a wheel swap along with the tires, our F-150 aftermarket wheel guide covers what to check.

Can You Put Tremor or Raptor Tires on a Regular F-150?

Not as a like-for-like swap. Both trims carry hardware the rest of the lineup doesn't, and their tires were sized around it.

Tremor

The Tremor's 275/70R18 stands 33.2 inches tall, about 3.4 percent taller than the 275/65R18 on an XLT 4x4. Ford's spec sheet shows the Tremor with monotube shocks, a different transfer case than the XL, STX, and XLT, and a wider front track than a standard SuperCrew 4x4. Load isn't the issue, since both sizes typically carry a 116. Clearance and calibration are.

Raptor

The Raptor's LT315/70R17 stands about 34.4 inches, roughly 7 percent taller than a 275/65R18, and rides on a Raptor-only chassis: cast aluminum lower control arms, FOX dampers, a five-link coil rear suspension, and a front track about 6 inches wider than a standard F-150. Raptor owners report Load Range C versions of this tire from the factory, so bigger here doesn't automatically mean more capacity. For taller aftermarket sizes on a standard truck, start with our F-150 aftermarket tire guide.

What the Wrong F-150 Tire Size Is Costing You

A size that mounts isn't the same as a size that works. When the diameter or the load rating misses your truck's spec, the costs stack up in a predictable order.

1. Calibration drift. A diameter change skews the speedometer, odometer, and the wheel-speed data your truck's stability and traction systems rely on.
2. Less reserve. A lower load rating leaves less cushion for passengers, a loaded bed, or a trailer tongue, and a tire working near its limit runs hotter.
3. Faster, uneven wear. Overworked rear tires wear their shoulders early, especially on trucks that carry weight regularly.
4. Sidewall damage. Flex cracks and bulges show up on overloaded or underinflated tires. Know whether sidewall damage is safe to drive on before you load up again.
5. Failure under load. Heat finally wins, usually on the highway with the bed full or a trailer behind you.
6. A shop that won't touch it. Many tire shops won't install a tire rated below the placard, which can leave you replacing a set you just bought.
7. Buying the right set anyway. The top rung: four tires in your truck's actual size and rating, after paying for the wrong ones first.

How to Find the Right Tire Size for Your F-150

Ten minutes at the truck saves you from buying your neighbor's tires. Work through it in this order.

1. Read the door placard. Write down the tire size and cold pressure exactly as printed.
2. Read the tire on the truck. Compare it to the placard. A previous owner may have changed sizes or ratings.
3. Confirm drivetrain and packages. Check the window sticker or build sheet for 4x4, FX4, Lobo, or wheel packages.
4. Match or beat the load rating. If you're buying a passenger tire, divide its rated load by 1.10 before comparing.
5. Keep the construction. If the placard lists an LT tire, stay LT.
6. Check diameter before changing wheel size. Stay within about 3 percent of the factory size and re-check the load rating for the new size.
7. Buy four that match. Same size, construction, and rating on all four corners.
8. Set pressure cold. Use the placard pressure for the placard tire, or the tire maker's load table if you've changed construction.

Conclusion

The F-150 lineup uses five standard-line sizes, a Tremor size, two C-rated LT options, a 22-inch option, and two Raptor sizes. Across the five standard sizes alone, counted capacity swings 380 pounds per tire. Add P-metric versions that trail their metric twins by a couple of load index points, and a "same size" tire can fall short of your truck's spec without looking any different.

So skip the neighbor's receipt and start with your own placard. Match the size, match or beat the load rating after the 1.10 factor, and keep LT construction where Ford specified it. When you're ready, shop truck tires by size and load rating and buy for the truck you actually own.

Key Takeaways

Here's what decides the right tire for your F-150.

• Five standard sizes, five capacities: Counted load runs from 2,125 to 2,505 pounds per tire across the standard-line fitments.
• Drivetrain matters: A 2026 XLT 4x2 and XLT 4x4 leave the factory on different sizes.
• P-metric often trails: In 275/65R18, P-metric versions commonly carry a 114 versus the metric 116.
• C-rated options are tougher, not much stronger: They add casing strength but only a few pounds of counted capacity.
• 22s need Extra Load: A standard-load 275/50R22 counts 320 pounds less per tire than a 275/65R18.

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