OEM wheel and tire fitment specs for the 2009 Acura MDX, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.
Recorded OEM specifications for the 2009 Acura MDX, donor years with overlapping ranges, and a calculator to compare a selected wheel. Range overlap is not a guaranteed fit.
Thread-only product links are shopping examples, not verified fits. Seat style is not confirmed here. As an Amazon Associate we earn from qualifying purchases.
Donor vehicles with overlapping OEM specs
These are vehicle-year records whose recorded OEM ranges overlap this 2009 Acura MDX. Overlap is not a guarantee that a specific wheel will install. Selected-wheel comparison is in the calculator below.
Evaluated 34 donor years. Listed 24 eligible overlaps (not all evaluated years are compatible). Showing all listed.
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Recorded OEM bolt pattern, center bore, and width/offset ranges overlap. This is not a guarantee that every wheel from the donor year fits this vehicle.
Dataset suggestionWheel spacer ≈ 16.35 mm – not a verified installation requirement.
A spacer of about 16.35 mm is a dataset suggestion only; clearance is not verified. Estimated outer position is about 16.35 mm farther inward than the mid OEM package.
Compare a donor vehicle or custom wheel against this 2009 Acura MDX. Use Compare in calculator on a donor row above to fill the donor side of this same calculator.
Compare
Compare wheel compatibility between two vehicles
Wheels from (donor vehicle)
Selected Car:
Custom wheel size (optional)
Tip: change values here to simulate custom wheels and immediately see the impact in the comparison below.
Custom tire size (optional)
Installed on (your vehicle)
Selected Car:
2009 Acura MDX
Compare Rims
Specification
Wheels from
Installed on
Result (Click it)
Bolt Pattern
The total number of bolt holes and the diameter of the circle they form.
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5x120
Center Bore
The hole in the center of the wheel that fits over the vehicle’s hub.
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64.1 mm
Thread Size
The size and spacing of the threads on the bolts or nuts that hold the wheel in place.
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M14 x 1.5
Rim Diameter
The wheel diameter in inches that determines which tire sizes will fit.
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18"
Rim Width
The distance between the inner edges of the wheel is measured in inches.
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8.0"
Wheel Offset
How far the wheel sits inward or outward relative to the hub mounting surface.
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45 mm
Backspacing
Shows how much space the wheel takes up toward the inside of the vehicle.
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-
Wheel Fasteners
The type of hardware used to secure the wheel to the vehicle.
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-
Compare Tires
Specification
Wheels from
Installed on
Result (Click it)
Section Width
The width of the tire from sidewall to sidewall, measured in millimeters.
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-
Aspect Ratio
The height of the tire’s sidewall expressed as a percentage of its width.
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Diameter
The wheel diameter for which the tire is designed to fit.
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Tire Pressure
The recommended air pressure for safe and efficient driving.
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Overall Diameter
The total height of the tire and wheel combined affects clearance and speedometer accuracy.
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-
Wheel Fitment Parts for the 2009 Acura MDX
Example products matched to recorded thread, hub, or spacer dimensions. They are not verified fits. Confirm seat style, thickness, and clearance before ordering.
As an Amazon Associate we earn from qualifying purchases. Product availability and pricing may change.
2009 Acura MDX Wheel Fitment Guide
You found a set of wheels and want to know if they will safely fit your 2009 Acura MDX. The main problem is balancing bolt pattern, offset, brake clearance, and tire diameter under real-world constraints. Below is a practical process I use in the shop, with checks you can repeat using the on-page calculator at wheelinterchange.com.
Goal
Select and validate wheels and tires that fit a 2009 Acura MDX without rubbing, vibration, or hardware issues, using the site’s comparison calculator and OEM baselines.
Prerequisites
Access to the on-page calculator on wheelinterchange.com.
Accurate specs for the candidate wheels and tires. Look at the back of the wheel for diameter, width, and offset stamps. Check tire sidewall for size and load index.
Tools: a torque wrench, a jack and stands, and a way to measure clearances. Consider:
If a value is missing for your trim, use the calculator’s vehicle selector and confirm with the owner’s manual and OEM service information.
Spec
Value
Bolt pattern
5x120
Center bore
64.1 mm
Thread size
M12 x 1.5
OEM rim diameter
18 in
OEM rim width
8.0 in
OEM offset (ET)
45 mm
Backspacing
5.77 in
OEM tire size
255/55R18
Assumption: some trims and accessory packages may vary. Validate wheel part numbers and tire load index against the door placard.
Step by step
1) Eliminate incompatibilities first
Bolt pattern must be 5x120. Do not attempt to fit 5x114.3 with wobble nuts or force. That is a safety risk.
Center bore must be 64.1 mm or larger. If larger, plan hub-centric rings sized 64.1 mm to your wheel’s bore. If smaller, the wheel will not seat on the hub.
Thread size is M12x1.5. Use matching lug nuts or bolts with the correct seat type that the wheel requires. Verify whether the wheel uses conical, ball, or mag-seat hardware.
2) Collect donor wheel and tire data
Wheel: diameter, width, offset, and center bore. Check casting marks and part numbers.
Tire: section width, aspect ratio, and rim diameter. Confirm load index and speed rating meet or exceed the door placard.
Wheel load rating should be appropriate for an SUV. Use manufacturer documentation for validation.
3) Use the calculator to compare
Open the calculator on wheelinterchange.com.
Set “Installed on” to your vehicle: 2009 Acura MDX.
For “Wheels from (donor vehicle)”, either choose the donor vehicle or enter the specs manually with “Custom wheel size”.
Enter custom rim diameter, width, and offset. If you change rim diameter, the tool will update tire diameter in the comparison. Adjust “Custom tire size” to what you plan to run.
4) Evaluate the results
Overall tire diameter: aim for a variance near ±3 percent to help maintain clearance, gearing, and speedometer accuracy.
Inner clearance to strut and spring: keep a positive margin. I aim for at least 3 to 5 mm static clearance at the tightest point, more if possible.
Outer “poke” relative to fender: confirm the wheel does not extend beyond the fender line through full suspension travel and steering lock.
Offset and backspacing: compare against OEM 45 mm and 5.77 in backspacing. Large departures are possible but drive new clearance checks.
5) Plan hardware and sensors
Hub-centric rings only if the wheel bore is larger than 64.1 mm. Order rings 64.1 mm to your wheel’s bore size.
Lug engagement: for M12 studs, target thread engagement at least equal to the stud diameter. Count full turns on the nut. If using spacers, re-check engagement.
TPMS: most 2009 MDX vehicles use direct TPMS. Transfer sensors or install compatible ones, then perform relearn or programming as required.
6) Test fit procedure
Mount one front wheel without a tire if clearance is tight, or mount the full wheel-tire assembly.
Hand rotate the hub and turn steering lock to lock. Watch caliper barrel and spoke clearance. A minimum of 3 mm static gap is recommended, more is better.
Lower the vehicle and bounce the suspension. Listen for liner contact and observe fender clearance.
Torque lugs to the value in your owner
Methodology and sources
Wheel interchange depends on more than bolt pattern. Where data is available, this site compares recorded OEM values:
Bolt pattern / PCD
Center bore direction (donor wheel bore must not be smaller than the hub)
Wheel diameter, width, and offset against known OEM ranges
A normal wheel spacer does not change bolt pattern. Hub rings cannot enlarge a wheel bore that is smaller than the hub. Brake clearance and tire package fitment still require vehicle-specific checks when not confirmed in the dataset.
