Recorded OEM specifications for the 2004 Chevrolet Blazer, donor years with overlapping ranges, and a calculator to compare a selected wheel. Range overlap is not a guaranteed fit.
Baseline mounting dimensions used for interchange decisions.
Multiple OEM configurations exist for this vehicle. Fitment can vary by trim, brakes, and factory wheel package – confirm your exact setup before buying.
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.
These are vehicle-year records whose recorded OEM ranges overlap this 2004 Chevrolet Blazer. Overlap is not a guarantee that a specific wheel will install. Selected-wheel comparison is in the calculator below.
Evaluated 30 donor years. Listed 24 eligible overlaps (not all evaluated years are compatible). Showing all listed.
Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.
Approximate position vs the mid OEM package: outer change -13.35 mm, inner change 0.65 mm. This uses aggregated width/offset ranges, not a specific wheel.
Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.
Recorded vehicle-side thread for the 2004 Chevrolet Blazer is 1/2"-20UNF. This donor year is recorded as M12x1.5. That is the vehicle stud/nut thread, not an intrinsic thread stamped on the wheel. Hardware must match this vehicle’s studs and the selected wheel’s seat and engagement. Existing hardware may be reusable if it already matches. Seat style is not in this dataset, so products are not a verified fit.
View 1/2"-20UNF options on Amazon – thread match only; seat style is not verified.
Recorded vehicle-side thread differs (M12x1.5 on the donor year vs 1/2"-20UNF on the target vehicle). Hardware must match the target vehicle’s studs and the selected wheel’s seat. Existing hardware may be reusable if it already matches. Seat style is not confirmed in this dataset. Approximate position vs the mid OEM package: outer change -22 mm, inner change 22 mm. This uses aggregated width/offset ranges, not a specific wheel.
Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.
Recorded vehicle-side thread for the 2004 Chevrolet Blazer is 1/2"-20UNF. This donor year is recorded as M12x1.5. That is the vehicle stud/nut thread, not an intrinsic thread stamped on the wheel. Hardware must match this vehicle’s studs and the selected wheel’s seat and engagement. Existing hardware may be reusable if it already matches. Seat style is not in this dataset, so products are not a verified fit.
View 1/2"-20UNF options on Amazon – thread match only; seat style is not verified.
Recorded vehicle-side thread differs (M12x1.5 on the donor year vs 1/2"-20UNF on the target vehicle). Hardware must match the target vehicle’s studs and the selected wheel’s seat. Existing hardware may be reusable if it already matches. Seat style is not confirmed in this dataset. Width/offset ranges overlap; confirm diameter and brake clearance for your trim.
Years grouped because recorded compatibility evidence is equivalent. Each year keeps its own page.
Recorded vehicle-side thread for the 2004 Chevrolet Blazer is 1/2"-20UNF. This donor year is recorded as M12x1.5. That is the vehicle stud/nut thread, not an intrinsic thread stamped on the wheel. Hardware must match this vehicle’s studs and the selected wheel’s seat and engagement. Existing hardware may be reusable if it already matches. Seat style is not in this dataset, so products are not a verified fit.
Donor width/offset sits outside the known OEM envelope for this vehicle. Recorded vehicle-side thread differs (M12x1.5 on the donor year vs 1/2"-20UNF on the target vehicle). Hardware must match the target vehicle’s studs and the selected wheel’s seat. Existing hardware may be reusable if it already matches. Seat style is not confirmed in this dataset.
Only years with evidence-based interchange relationships are listed. Adjacent years are not assumed compatible.
Compare a donor vehicle or custom wheel against this 2004 Chevrolet Blazer. Use Compare in calculator on a donor row above to fill the donor side of this same calculator.
Compare wheel compatibility between two vehicles
2004 Chevrolet Blazer
Example products matched to recorded thread, hub, or spacer dimensions. They are not verified fits. Confirm seat style, thickness, and clearance before ordering.
1/2" - 20 UNF
1/2" - 20 UNF · Thread match only; seat style is not verified
View on Amazon →
1/2" - 20 UNF · Thread match only; seat style is not verified
View on Amazon →
1/2" - 20 UNF · Thread match only; seat style is not verified
View on Amazon →As an Amazon Associate we earn from qualifying purchases. Product availability and pricing may change.
The values below reflect data provided for at least one factory configuration of the 2004 Chevrolet Blazer. Trims, packages, and regional builds can differ. If any value is unknown for your specific VIN, confirm it with the Wheel Interchange calculator on this page and by checking your owner’s manual, door jamb tire label, and GM service information.
| Spec | Value | Notes |
|---|---|---|
| Bolt pattern | 5x120.70 mm | Same geometry as 5x4.75 in. Always verify on the donor and your vehicle. |
| Center bore | 70.3 mm | Wheels with a larger bore require hub centric rings. Do not use a smaller bore. |
| Thread size | M12 x 1.5 | Match lug nut thread and seat type to the wheel. |
| Rim diameter | 15 in | Factory size shown. Other trims may differ. |
| Rim width | 7.0 in | Factory size shown. Confirm on your wheel casting or RPO codes. |
| Wheel offset (ET) | 50 mm | Published value. Offsets can vary by wheel design and package. |
| Backspacing | 5.47 in | Published value. Some sources and methods vary. Measure if in doubt. |
| OEM tire size | 205/75R15 | Factory tire shown. Verify on the driver door label for your VIN. |
Important: Offset and backspacing can be published using different measurement methods. If your measurements do not match references exactly, measure your wheel directly with a straightedge and tape, and use the calculator to compare.
Plus sizing means increasing rim diameter while adjusting tire aspect ratio to maintain overall tire diameter. This helps preserve speedometer accuracy and fender clearance. The calculator will update tire diameter automatically when you change rim diameter so you can target a similar overall diameter to OEM 205/75R15.
If your trim differs from the values shown, confirm your OEM baseline in the manual and door label, then use the calculator to model any plus-size setup before purchase.
Is 5x120.70 mm the same as 5x4.75 in?
Yes. 120.7 mm equals 4.75 inches. When shopping, you may see either 5x120.7 or 5x4.75. Always confirm the center bore, offset, and brake clearance as well.
Can I install 16 or 17 inch wheels on my 2004 Blazer?
It depends on your trim, brakes, and tire choice. Use the calculator to model a larger rim with a lower profile tire so the overall diameter stays close to stock. Verify inner and outer clearances, then test fit if possible.
What offset range works on this vehicle?
Offset varies by OEM wheel and trim. This page lists a provided factory reference of 50 mm, but your wheel may differ. Compare any new wheel to your OEM wheel in the calculator and verify clearances on the vehicle.
Do I need hub centric rings?
If the wheel’s center bore is larger than 70.3 mm, use rings sized to 70.3 mm on the hub side and to the wheel’s bore on the other side. If the wheel already has a 70.3 mm bore, rings are not required.
What is the correct lug nut torque?
Always follow the Chevrolet service manual or the door label for your specific VIN and wheel. Do not rely on generic values. Tighten in a star pattern and re-torque after driving 50 to 100 miles.
Can I use wheel spacers to fix clearance?
Spacers change track width and stud engagement. If used, choose hub centric spacers that match 70.3 mm at the hub and the wheel bore on the outer side. You may need longer studs. Follow local regulations and recheck torque often.
How do I measure backspacing and offset at home?
Place a straightedge across the inboard rim lip. Measure to the hub pad for backspacing. Offset is derived from the wheel centerline and backspacing. If your measurements differ from references, trust the physical measurement and test fit.
Will changing tire size affect my speedometer?
Yes. Overall tire diameter changes will affect indicated speed. The calculator shows the difference. Keep diameter close to OEM or plan for recalibration.
How can I confirm my exact OEM wheel and tire specs?
Check the driver door jamb tire label, the owner’s manual, and GM service data. Your VIN and RPO codes can identify factory wheel and tire packages. Then use those as the baseline in the calculator.
Wheel interchange depends on more than bolt pattern. Where data is available, this site compares recorded OEM values:
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.
