OEM wheel and tire fitment specs for the 2008 Chevrolet Silverado 3500HD, including bolt pattern (PCD), center bore diameter, thread size, rim diameter, rim width, wheel offset, and backspacing.
2008 Chevrolet Silverado 3500HD Fitment Specs
Baseline mounting dimensions used for interchange decisions.
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.
2008 Chevrolet Silverado 3500HD Wheel Fitment Guide
Known OEM Fitment For 2008 Chevrolet Silverado 3500HD
This page lists the factory wheel and tire specs we can verify for the 2008 Chevrolet Silverado 3500HD. If a value is unknown or varies by trim or by SRW vs DRW, use your door-jamb tire placard and the on-page calculator to confirm exact sizes for your truck.
Parameter
Spec
Notes
Bolt pattern
8x165.1 mm
Also written as 8x6.5 in. Must match exactly.
Center bore
124.1 mm
Wheel center bore must be at least 124.1 mm. Larger bores can use hub-centric rings.
Thread size
M14 x 1.5
Verify lug seat style matches your wheels before installation.
Rim diameter
Unknown
Varies by trim and SRW vs DRW. Check your door sticker or owner manual, then enter it in the calculator.
Rim width
Unknown
Confirm on your OEM wheel stamping or service info. Use the calculator to model changes.
Wheel offset (ET)
Unknown
Varies by wheel and SRW vs DRW. Measure your current wheels or consult OEM data.
Backspacing
Unknown
Measure using a straightedge and tape. The calculator can convert between offset and backspacing.
Tire size
Unknown
Door-jamb tire placard lists factory tire size. Input that size in the calculator for accurate comparisons.
Tip to measure backspacing: Lay a straightedge across the inboard bead seat of the wheel, measure to the mounting face. Offset can be derived in the calculator once width and backspacing are known.
How To Use The Wheel Interchange Calculator
Start with Installed on (your vehicle). Choose 2008 Chevrolet Silverado 3500HD. If your truck is dually, select DRW where applicable.
For Wheels from (donor vehicle), pick the vehicle you want wheels from. The tool will highlight bolt pattern and hub bore differences.
Enter your OEM tire size from the door sticker. If you do not have it, look up your exact trim and axle on OEM sources before proceeding.
Use Custom wheel size to try new rim diameter, width, and offset. The calculator shows inner clearance change and outer poke compared to your baseline.
Use Custom tire size to set section width and aspect ratio. When you change rim diameter, the calculator updates tire diameter in the comparison so you can keep overall diameter close to stock.
Review results for:
Inner clearance change to suspension and steering parts.
Outer poke relative to fenders and mudflaps.
Overall tire diameter change that can affect gearing and speedometer.
Adjust values until all clearances are safe at full lock and full suspension compression.
Fitment Checklist Before You Buy
Bolt pattern: Must be 8x165.1 mm. 8x180 GM wheels will not fit this hub.
Center bore: Minimum 124.1 mm. A larger wheel bore is acceptable with quality hub-centric rings. Never force a smaller bore onto the hub.
Thread size and lug seat: Threads are M14 x 1.5. Confirm the lug nut seat style matches the wheel seat design.
SRW vs DRW: Single-rear-wheel and dually wheels use very different offsets and mounting geometry. Do not mix SRW and DRW wheels.
Load rating: Wheel and tire load index must meet or exceed your truck’s GAWR on the door sticker. Heavy-duty towing and hauling needs extra margin.
Brake and suspension clearance: Use the calculator to confirm inner clearance. Physically test-fit to check calipers, tie-rod ends, upper control arms, and leaf springs.
Backspacing and fender clearance: Check for fender, liner, and bumper interference at full lock and full compression. Plan for snow chains if you use them.
TPMS: Many 2008 Silverado 3500HD trucks use TPMS. If equipped, you will need compatible sensors and a relearn after installation.
Spacers and adapters: Use only hub-centric units that match 8x165.1 and M14 x 1.5, with proper stud engagement. Recalculate offset and clearances in the calculator if adding spacers.
RPO codes and placards: GM RPO codes and the door-jamb tire placard can confirm factory sizes. Use those values as your baseline in the calculator.
Plus Sizing And Common Upgrades
Keep overall tire diameter close to stock. A change within about 3 percent helps preserve gearing, ABS, and speedometer accuracy.
Wider wheels and tires increase track width and scrub radius. Use the calculator to keep inner clearance safe while avoiding excessive poke.
All-terrain or off-road tires often run larger than labeled. Check the manufacturer’s measured diameter and section width, then verify with the calculator.
Leveling or lift kits alter required offset. After suspension changes, re-measure clearances and re-run the calculator.
Dually setups require matched inner and outer wheels with the correct offset to maintain safe spacing between the rear tires. Do not substitute SRW wheels on a DRW axle.
Installation Tips
Test-fit each wheel without a tire first. Spin by hand to confirm brake and hub clearance.
Clean the hub face and center pilot with a wire brush. Remove rust and debris so the wheel sits flush.
If the wheel bore is larger than 124.1 mm, install proper hub-centric rings sized to your wheel bore.
Start lug nuts by hand to avoid cross-threading. Tighten in a star pattern in 2 to 3 stages to the OEM torque listed in the service manual.
Do not lubricate lug nut seats or studs unless specified by OEM. A small amount of anti-seize on the hub pilot can help future removal. Keep it off the studs.
After 50 to 100 miles, re-check torque on all lugs. Re-check again after towing or heavy loads.
For dually axles, confirm proper inner and outer wheel orientation and ensure adequate clearance between the dual tires under load.
Yes. 8x165.1 mm equals 8x6.5 in. They are two ways of writing the same pattern.
Will 8x180 GM wheels fit my 2008 Silverado 3500HD?
No. 8x180 wheels will not fit an 8x165.1 hub. The bolt patterns and hub bores are different.
What center bore do I need?
The hub bore is 124.1 mm. Your wheel’s center bore must be at least this size. You can use hub-centric rings if the wheel bore is larger.
Can I use SRW wheels on a dually axle?
No. DRW wheels use different offsets and are designed as inner and outer pairs. Mixing SRW and DRW wheels is unsafe.
What tire size came stock on the 2008 3500HD?
It varies by trim and SRW vs DRW. Check the door-jamb tire placard or your owner’s manual, then use that size in the calculator as your baseline.
Do I need new TPMS sensors?
If your truck has TPMS, you need compatible sensors in the new wheels and a relearn procedure after installation. Consult OEM service information for the correct parts and steps.
What offset and backspacing do I need?
These values vary by wheel design and by SRW vs DRW. Measure your current setup, confirm clearances on the truck, and use the calculator to model changes before buying.
How far can I change overall tire diameter?
Keep overall diameter changes modest. Many owners target within about 3 percent of stock to minimize impact on gearing and speedometer. Verify real-world clearances on the truck.