The Toyota Tacoma’s bed width between the wheel wells depends on its generation. Toyota lists 41.5 inches for the 2016–2023 third-generation Tacoma and 44.7 inches for the redesigned 2024 fourth-generation Tacoma. That difference matters when you size a drawer system, sleeping platform, pallet, toolbox, or other bed accessory.
Last updated: July 13, 2026
Quick Answer
A 2016–2023 Toyota Tacoma has about 41.5 inches between its wheel wells. Toyota’s 2024 fourth-generation specification lists 44.7 inches. Five-foot and six-foot beds within the same generation use the same wheel-well width, but their lengths differ. Measure your finished bed before cutting materials or ordering a tight-fitting accessory.
Key Takeaways
- 2016–2023 Tacoma: Toyota lists a 41.5-inch bed width.
- 2024 and newer fourth generation: Toyota lists 44.7 inches between the wheel wells, 53 inches at the tailgate, and 56.4 inches at the accessory rail.
- Bed length does not change the wheel-well width within the same generation.
- Use the narrowest finished measurement, not a rounded catalog number, for a custom build.
- Width alone does not confirm accessory fit. Check model year, cab, bed length, mounting points, height, and payload.
At a Glance
| Time Required | 5–10 minutes |
| Difficulty | Easy |
| Tools Needed | Rigid tape measure, straightedge, notepad, and masking tape |
| Cost | No added cost if you already have a tape measure |
Tacoma Wheel-Well Width: Quick Reference
Toyota’s official specifications show a clear generation change. The 2023 Tacoma brochure lists a 41.5-inch bed width for both available bed lengths. The 2024 Tacoma brochure gives three separate inside-width measurements and lists 44.7 inches between the wheel wells.
| Tacoma model years | Between wheel wells | Other official bed measurements |
|---|---|---|
| 2016–2023, third generation | 41.5 in. | 60.5-in. short bed or 73.7-in. long bed; 19.1-in. bed height |
| 2024 and newer, fourth generation | 44.7 in. | 53 in. at tailgate; 56.4 in. at accessory rail; 60.3-in. or 73.5-in. bed length |
The fourth-generation Tacoma gives you 3.2 inches more clearance between the wheel wells than the 2016–2023 truck.
For a 2005–2015 Tacoma or a first-generation truck, check the brochure or owner information for your exact model year and confirm the measurement yourself. Bed repairs, liners, storage boxes, and previous modifications can change the finished clearance.
How Bed Width Is Measured: Wheel Wells vs. Tailgate vs. Rails
“Bed width” can describe several different measurements. Toyota’s third-generation brochure uses one bed-width figure, while the fourth-generation brochure separates the width between wheel wells, at the tailgate, and at the accessory rail. That is why two accurate-looking numbers can describe different parts of the same bed.
- Between wheel wells: The narrow floor-level span that controls whether a box, pallet, drawer, or mattress can sit low in the bed.
- At the tailgate: The opening available when you slide an item through the rear of the bed.
- At the accessory rail: The wider upper-bed measurement near the factory rail system.
- Overall vehicle width: The truck’s exterior body width, which does not tell you usable cargo-bed clearance.
Note: Do not use an “overall width” number from a search result unless the source defines its measuring points. For custom work, record the exact plane where the accessory, frame, or cargo will sit.
How to Measure Your Tacoma’s Wheel-Well Width in 5 Steps
Measure the truck after every liner, mat, trim piece, or permanent bed accessory is installed. The published specification is a useful starting point, but your smallest finished clearance controls the fit.
- Park on a level surface. Empty the bed and open the tailgate so you can place the tape squarely.
- Inspect the measuring area. Note liner ribs, bolt heads, tie-down hardware, dents, storage boxes, and trim that may reduce clearance.
- Measure the narrowest floor-level span. Run a rigid tape between the inside faces of the wheel wells. Keep it perpendicular to the bed sides.
- Check more than one point. Measure near the front, middle, and rear of the wheel-well humps. Use the smallest repeatable number for a rigid build.
- Measure the other fit points. Record the tailgate opening, upper-bed width, available height, bed length, and mounting-point spacing.
Pro Tip: Cut a scrap-wood gauge or cardboard template to your planned width. Test it at the front, center, and rear before you cut expensive plywood or order drawer slides.
Official Measurements and Common Reported Numbers
The most useful numbers are the measurements Toyota defines in its specifications. Owner measurements can help with a finished bed, but they should not replace an official model-year specification or your own tape measure.
Common Reported Measurements
| Measurement | 2016–2023 Tacoma | 2024 fourth generation |
|---|---|---|
| Between wheel wells | 41.5 in. | 44.7 in. |
| At tailgate | Measure your truck | 53 in. |
| At accessory rail | Measure your truck | 56.4 in. |
| Short-bed length | 60.5 in. | 60.3 in. |
| Long-bed length | 73.7 in. | 73.5 in. |
How to Use Owner Measurements
Owner measurements are most valuable when they identify the model year, bed length, liner type, measuring height, and exact endpoints. A number without that context can be misleading. A measurement taken above the wheel wells may be several inches wider than one taken at the bed floor.
Use community measurements to spot possible fit issues, then confirm them on your truck. This is especially important for used Tacomas because repair work, aftermarket bed caps, drawer brackets, and liner ribs may change the available space.
Measurement Definitions Clarified
For a drawer box or low platform, “usable width” usually means the narrowest span between the finished wheel-well surfaces. For a sleeping deck that sits above the humps, usable width may extend toward the bed walls. For a rack, the key dimensions may be rail spacing and bracket shape rather than floor width.
Write each measurement with a label such as “floor between wells,” “upper wall,” “tailgate opening,” or “rail center-to-center.” This simple step prevents you from comparing unlike dimensions.
How Width Changes by Generation and Bed Length
The 2024 redesign changed the Tacoma’s bed geometry. Toyota increased the wheel-well clearance from 41.5 inches on the third generation to 44.7 inches on the fourth generation. The newer bed is also listed at 53 inches at the tailgate and 56.4 inches at the accessory rail.
- 2016–2023 five-foot vs. six-foot bed: Both use the same 41.5-inch bed width. Their official lengths are 60.5 and 73.7 inches.
- 2024 fourth-generation five-foot vs. six-foot bed: Both use the same 44.7-inch wheel-well width. Their official lengths are 60.3 and 73.5 inches.
- Generation impact: A width-sensitive accessory designed around a 41.5-inch opening may leave extra space in a newer truck, while a 44-inch-wide fourth-generation product will not sit between the wells of a third-generation truck.
Do not treat “Tacoma 5-foot bed” or “Tacoma 6-foot bed” as a complete fitment description. The model year and generation matter just as much as the nominal length.
What Fits Between the Wheel Wells?
A rigid item fits between the wheel wells only when its actual width is less than your truck’s smallest finished clearance. Leave extra room for loading angle, liner texture, straps, and movement.
| Item | Likely fit | What to check |
|---|---|---|
| 48 × 40-in. North American pallet | The 40-in. side can fit between 41.5- or 44.7-in. wheel wells | Actual pallet condition, load overhang, forklift access, cargo weight, and tie-down space |
| EPAL Euro pallet, 1200 × 800 mm | Its 800-mm side is about 31.5 in. and fits between the wells | Loaded weight, bed length, and securement |
| 4 × 8-ft. plywood sheet | Will not lie flat between 41.5- or 44.7-in. wheel wells | Support it above the humps or at an angle and secure it against lifting and sliding |
| Twin mattress | A nominal 38-in. width can fit low in either generation | Actual mattress width, wheel-well shape, and bed length |
| Full mattress | A nominal 54-in. width does not fit between the wells | Use an elevated platform or a narrower custom foam pad |
The European Pallet Association lists the EPAL 1 pallet at 800 × 1200 mm. Always compare the loaded pallet’s total weight with your door-jamb payload label, not just the pallet’s footprint.
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Building a Platform on a 6-Foot Tacoma Bed
Start with the correct generation. A third-generation six-foot bed is listed at 73.7 inches long and 41.5 inches wide at the narrow bed measurement. A fourth-generation six-foot bed is listed at 73.5 inches long and 44.7 inches between the wheel wells.
Some Tacoma beds have molded features that owners use to support crosspieces, but you should not assume a nominal 2 × 6 board will fit every model year or liner. Dimensional lumber is smaller than its nominal name, and molded pockets can taper. Test each support point before building the deck.
- Choose a low-weight design. Plywood, framing, drawers, water, batteries, passengers, and camping gear all count against payload.
- Use removable supports where possible. A freestanding frame avoids permanent holes and makes inspection easier.
- Support the deck at several points. Avoid a long unsupported plywood span or a concentrated load on a thin edge.
- Allow access to tie-downs. Do not bury every factory anchor behind a drawer or wall panel.
- Check movement. The finished platform should not slide forward, lift, or shift sideways during braking and turns.
Warning: Do not drill into the bed, rail, or body until you know what is behind the panel and how the modification affects the composite bed. Keep the total loaded truck within the payload and axle limits shown on the vehicle labels and owner information.
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How Spray-In and Drop-In Liners Affect Usable Width
A liner can change the finished measurement, but the amount is not universal. Coating thickness varies, drop-in liners have molded ribs, and rubber mats mainly affect height. The Tacoma already uses a composite inner bed in the generations covered here, so a liner is an optional surface or protection choice rather than the source of the bed’s structure.
| Bed treatment | Possible effect | Best practice |
|---|---|---|
| Spray-on coating | Reduces clearance by the coating applied to both sides | Measure after curing, especially around corners and textured buildup |
| Drop-in liner | May reduce width and height at molded ribs or lips | Measure the narrowest molded point and confirm the liner cannot shift |
| Rubber bed mat | Usually changes floor height more than width | Check door, drawer, and tailgate clearances with the mat installed |
Do not subtract a fixed fraction of an inch from a catalog dimension. Measure the finished surfaces because installer technique and liner design determine the real reduction.
Accessory Fit: Racks, Drawers, and Toolboxes
Wheel-well width is only one part of fitment. Before ordering, confirm the accessory’s supported model years, cab style, bed length, rail system, mounting method, lid clearance, and required tailgate space. The 2024 redesign means many 2016–2023 bed accessories should not be assumed to fit a fourth-generation truck.
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Rack and Mount Compatibility
Most bed racks mount near the upper rails, so the 41.5- or 44.7-inch floor measurement may not control fit. Check the rail-to-rail span, bracket shape, bed cap, tonneau-cover compatibility, and whether the rack uses factory rails or clamp plates.
- Match the rack to your exact model year and bed length.
- Confirm that brackets clear the bed cap, tie-downs, lighting, and power outlets.
- Check the rack’s static and dynamic ratings, then compare the whole load with the truck’s payload.
- Recheck fastener torque according to the rack maker’s instructions.
Drawer and Toolbox Clearance
A low drawer box must be narrower than the smallest finished wheel-well opening. It also needs room for slides, latches, fasteners, and side-to-side movement. A cross-bed toolbox may sit above the wheel wells, so its lower box width, top width, depth, and lid swing all matter.
Mock up the product footprint with cardboard or thin wood. Open the tailgate, slide the template through the opening, and check it at every point where the real unit will sit. Leave service room so you can remove fasteners and reach factory tie-downs later.
Common Measurement Mistakes to Avoid
- Using a fourth-generation number for a third-generation truck. The difference is 3.2 inches between the wheel wells.
- Confusing upper-bed width with floor width. A platform above the humps can be wider than a drawer sitting on the floor.
- Measuring only once. Use the smallest repeatable reading at the planned height.
- Ignoring the tailgate opening. An accessory may fit inside the bed but fail to pass through the rear opening when assembled.
- Ordering by “five-foot bed” alone. Model year, generation, cab, trim equipment, and rail design can change fit.
- Building to zero clearance. Leave space for liner texture, hardware, assembly, and removal.
Cargo Weight and Securement Matter Too
An item can fit dimensionally and still be unsafe to carry. Count the weight of passengers, cargo, the platform, drawers, rack, tools, water, and accessories against the truck’s payload. Place heavy items low and distribute them across the bed instead of concentrating them at the tailgate or on one small support.
Secure cargo so it cannot shift forward, backward, sideways, or upward. The FMCSA cargo-securement guidance is written for commercial vehicles, but its core safety goal is useful for any pickup: prevent cargo from shifting within the vehicle or falling from it. Follow your state’s laws and the instructions for your straps, anchors, rack, and accessory.
Quick Decision Checklist for Campers and Builders
- Identify the model year and generation before using a width figure.
- Confirm whether you have the short or long bed.
- Measure between the finished wheel-well surfaces at the height where the build will sit.
- Measure the tailgate opening, upper-bed width, bed length, and available height.
- Check liner ribs, rail hardware, outlets, lights, and tie-down access.
- Make a full-size cardboard or scrap-wood template.
- Leave clearance for installation, movement, and future removal.
- Add the build’s weight to passengers and cargo before comparing the total with payload.
- Use rated anchors and restraints so the build and cargo cannot shift.
Related Guides
Frequently Asked Questions
How wide is a Tacoma bed between the wheel wells?
Toyota lists 41.5 inches for the 2016–2023 Tacoma and 44.7 inches for the redesigned 2024 fourth-generation Tacoma. Measure your finished bed before buying a close-fitting accessory.
How wide is a truck bed between the wheel wells?
It varies by make, model, generation, and bed design. Do not use a general truck-bed range for an accessory purchase. Check the manufacturer’s dimension for your model year and verify it with a tape measure.
What is the inside width of a 2024 Tacoma bed?
Toyota lists 44.7 inches between the wheel wells, 53 inches at the tailgate, and 56.4 inches at the accessory rail for the 2024 Tacoma.
Are five-foot and six-foot Tacoma beds the same width?
Within the same generation, Toyota lists the same wheel-well width for both bed lengths. The short and long beds differ mainly in length, but model-year fitment still matters for rails, brackets, and accessories.
Will a 4 × 8 sheet of plywood fit flat between Tacoma wheel wells?
No. A sheet is about 48 inches wide, which is wider than both the 41.5-inch third-generation clearance and the 44.7-inch fourth-generation clearance. You must support it above the wheel wells or carry it at an angle and secure it correctly.
Will a standard pallet fit in a Tacoma bed?
A common 48 × 40-inch pallet can fit with its 40-inch side between the wheel wells, but the load, pallet condition, bed length, payload, loading method, and tie-down space still determine whether the haul is practical and safe.
Conclusion
Use 41.5 inches as the official bed-width figure for a 2016–2023 Tacoma and 44.7 inches as the official between-wheel-wells figure for the redesigned 2024 fourth generation. Five-foot and six-foot beds share the same width within a generation, but they have different lengths.
For any custom platform, drawer, toolbox, pallet, or sleeping setup, measure the finished bed at the exact mounting height. Check the tailgate opening, upper rails, liner, hardware, payload, and cargo restraints before you cut materials or place an order.
Sources
- Toyota 2023 Tacoma brochure — third-generation bed width, bed length, and bed height specifications.
- Toyota 2024 Tacoma brochure — fourth-generation wheel-well, tailgate, accessory-rail, and bed-length dimensions.
- European Pallet Association: EPAL Euro Pallet — official EPAL 1 pallet dimensions.
- Federal Motor Carrier Safety Administration cargo-securement rules — principles for preventing cargo from shifting or falling.
