OEM wheel and tire fitment specs for the 2009 Chevrolet TrailBlazer, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.
Recorded OEM specifications for the 2009 Chevrolet TrailBlazer, donor years with overlapping ranges, and a calculator to compare a selected wheel. Range overlap is not a guaranteed fit.
Multiple OEM configurations exist for this vehicle. Fitment can vary by trim, brakes, and factory wheel package – confirm your exact setup before buying.
Center-bore records disagree: year-level hub 78.1 mm vs trim range 77.8–77.8 mm. Interchange below does not treat this as an unqualified match.
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 Chevrolet TrailBlazer. Overlap is not a guarantee that a specific wheel will install. Selected-wheel comparison is in the calculator below.
Evaluated 16 donor years. Listed 16 eligible overlaps (not all evaluated years are compatible). Showing all listed.
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Center-bore records disagree (target year-level hub 78.1 mm vs trim range 77.8–77.8 mm; donor year-level hub 78.1 mm vs trim range 77.8–77.8 mm). Unqualified overlap is not claimed until the conflict is resolved. Approximate position vs the mid OEM package: outer change -8.35 mm, inner change -4.35 mm. This uses aggregated width/offset ranges, not a specific wheel.
Dataset suggestionHub-centric rings ≈ 78.3 → 77.8 mm – not a verified installation requirement.
Hub-centric rings of about 78.3 → 77.8 mm mm may be relevant if the wheel bore is larger than the hub; clearance is not verified. Donor width/offset sits outside the known OEM envelope for this vehicle. Precomputed data suggested a spacer; geometry was re-checked against OEM envelope.
Wheel geometryOEM width/offset ranges overlap (not a specific wheel)
Center-bore records disagree (target year-level hub 78.1 mm vs trim range 77.8–77.8 mm; donor year-level hub 78.1 mm vs trim range 77.8–77.8 mm). Unqualified overlap is not claimed until the conflict is resolved. Approximate position vs the mid OEM package: outer change -8.35 mm, inner change -4.35 mm. This uses aggregated width/offset ranges, not a specific wheel.
Chevrolet TrailBlazer Years With Compatible Wheels
Only years with evidence-based interchange relationships are listed. Adjacent years are not assumed compatible.
Compare a donor vehicle or custom wheel against this 2009 Chevrolet TrailBlazer. 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 Chevrolet TrailBlazer
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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6x127
Center Bore
The hole in the center of the wheel that fits over the vehicle’s hub.
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77.8 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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M12 x 1.5
Rim Diameter
The wheel diameter in inches that determines which tire sizes will fit.
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16"
Rim Width
The distance between the inner edges of the wheel is measured in inches.
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7.0"
Wheel Offset
How far the wheel sits inward or outward relative to the hub mounting surface.
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50 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 Chevrolet TrailBlazer
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 Chevrolet TrailBlazer Wheel Fitment Guide
Known OEM Fitment For 2009 Chevrolet TrailBlazer
The values below are the known details provided for this specific year and model. Trims and option packages can vary. Always verify against your door-jamb tire placard, the wheel stamping, and the on-page calculator before you buy.
Specification
Value
Notes
Bolt pattern
6x127
Also called 6x5 in. Must match exactly.
Center bore
78.1 mm
Use hub-centric rings if aftermarket wheel bore is larger.
Thread size
M12 x 1.5
Confirm lug nut seat style for your wheels before purchase.
Wheel diameter
17 in
Provided value. Verify for your trim on the tire placard.
Wheel width
7.0 in
Provided value.
Wheel offset
ET 50 mm
Provided value. Affects inner and outer clearance.
Backspacing
5.47 in
Provided value. Cross-checks with offset and width.
Tire size
235/75R16
Provided value. This tire pairs with a 16 in rim. Sizes may vary by trim. Verify on your tire placard.
Note: The provided wheel size (17x7 ET50) and provided tire size (235/75R16) indicate that multiple OEM packages likely existed in 2009. Confirm your exact factory wheel and tire sizing on the driver door placard and compare in the calculator before selecting replacements.
How To Use The Wheel Interchange Calculator
Open the calculator on wheelinterchange.com and select your scenario.
In Wheels from (donor vehicle), enter the wheel and tire currently installed on your TrailBlazer or the donor set you are considering.
In Installed on (your vehicle), select 2009 Chevrolet TrailBlazer so the tool uses the correct baseline.
If you want to try different specs, use Custom wheel size to change rim diameter, width, and offset, and Custom tire size to change section width and aspect ratio.
The calculator updates tire diameter as you change rim diameter. Watch inner clearance near struts and brakes, and outer clearance at fenders.
Aim to keep overall tire diameter close to your placard size and monitor scrub radius changes by tracking offset changes. The tool explains differences in ride height, speedometer error, and clearance.
When values are unknown or vary by trim, pull the exact sizes from your tire placard and the back of your wheel, then enter them into the calculator for the most accurate comparison.
Fitment Checklist Before You Buy
Bolt pattern: Must be 6x127 to bolt on.
Center bore: Stock hub is 78.1 mm. If the new wheel bore is larger, plan hub-centric rings. If it is smaller, the wheel will not seat.
Thread and hardware: Threads are M12 x 1.5. Confirm lug nut seat style that matches the wheel. Do not mix cone, mag, or ball seats.
Brake and suspension clearance: Use the calculator to estimate inner clearance, then test fit to ensure the barrel clears calipers and the inboard lip clears knuckle and strut.
Fender clearance: Check outer poke. Turn lock-to-lock and compress suspension to verify no rubbing on liners or fenders.
Overall diameter: Keep the new tire’s overall diameter close to stock to maintain speedometer accuracy. A general target is within about 3 percent.
Load rating: Wheel and tire load ratings must meet or exceed the vehicle’s GAWR on the door placard.
TPMS: Plan sensor transfer or new compatible sensors and a relearn procedure after install.
Backspacing and offset: Compare to the provided 5.47 in backspacing and ET 50 mm where applicable. Large changes can affect bearing load and handling.
Verify OEM package: 2009 models may have different OEM wheel and tire sizes by trim. Use your door placard and the calculator to confirm.
Plus Sizing And Common Upgrades
Plus sizing increases rim diameter while adjusting tire aspect ratio so overall tire diameter stays similar. This helps maintain speedometer accuracy and clearance while improving appearance or handling.
Start with your placard size. If your TrailBlazer shows a 16 inch tire on the placard, input that baseline into the calculator. If yours shows a 17 inch wheel, use that instead.
Increase rim diameter in 1 inch steps and reduce tire aspect ratio until the calculator shows a similar overall diameter. Watch inner and outer clearance as width and offset change.
Wider wheels often need lower offset to avoid inner rub, but too low can cause fender poke. Use the calculator’s inner and outer position deltas to target a safe compromise.
Always test fit, spin the wheel by hand to check caliper clearance, and verify full steering lock clearance before mounting tires.
Installation Tips
Clean the hub face and the wheel mounting pad so the wheel seats flush. Remove rust with a wire brush.
If using hub-centric rings, choose 78.1 mm to your wheel’s center bore and install them fully seated.
Hand start all lug nuts to avoid cross-threading. Tighten in a star pattern.
Torque lug nuts to the OEM specification from your owner’s manual using a calibrated torque wrench. Do not rely on impact guns for final torque.
Re-torque after 50 to 100 miles of driving.
Perform a TPMS relearn if sensors were moved or replaced.
After installation, do a full lock-to-lock steering check and a short road test, listening for rubbing over bumps and during turns.
Tools And Helpful Supplies
Floor jack and jack stands rated for vehicle weight
Anti-seize for the hub center only if recommended by OEM procedures
Tire pressure gauge
FAQs
What is the bolt pattern for the 2009 Chevrolet TrailBlazer?
6x127. The wheel must match this pattern to bolt on.
What center bore does the hub use?
78.1 mm. If your aftermarket wheel has a larger bore, use hub-centric rings sized 78.1 mm to your wheel’s center bore.
What is the thread size for the lug nuts?
M12 x 1.5. Confirm the correct seat style for your wheels before purchasing hardware.
What is the OEM offset and backspacing provided here?
Offset ET 50 mm and backspacing 5.47 in are the provided values. Verify your trim’s exact wheel stamping and compare in the calculator.
What is the stock tire size?
235/75R16 is provided in the known data. Because wheel and tire packages can vary by trim, confirm your placard size and use it as the calculator baseline.
Can I run 16 inch or 17 inch wheels?
Both 16 and 17 inch packages appear across various trims. Check your door placard, confirm caliper clearance with a test fit, and validate overall diameter and clearances with the calculator.
Do I need hub-centric rings?
If the aftermarket wheel’s center bore is larger than 78.1 mm, yes. Choose rings sized 78.1 mm to your wheel’s bore. If the wheel bore is smaller than 78.1 mm, it will not fit.
What lug nut torque should I use?
Always use the torque specification in your owner’s manual or service information for the 2009 TrailBlazer and your specific wheel. Do not guess. Re-torque after 50 to 100 miles.
How much offset change is safe?
It depends on wheel width, tire size, and brake package. Use the calculator to compare inner and outer position changes to your baseline and ensure there is no contact under steering or suspension compression. Test fit before mounting tires.
Will my TPMS work with new wheels?
You can transfer compatible OEM sensors or install compatible replacements. A TPMS relearn may be required after installation.
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.
