2013 Chevy Silverado 1500 Bolt Pattern Guide
Your 2013 Chevy Silverado 1500 uses a 6×139.7 mm bolt pattern, also called 6×5.5 inches. This six-lug pattern applies across 2013 Silverado 1500 configurations, as detailed in this 2013 Silverado 1500 bolt-pattern guide.
Bolt pattern alone does not guarantee a proper wheel fit. You also need to match the center bore, wheel offset, backspacing, wheel width, lug nuts, and brake clearance before installing factory replacement or aftermarket wheels.
You can also compare compatible GM trucks and SUVs, measure your current wheels, and avoid common fitment errors that cause rubbing, vibration, or improper lug engagement.
Factory Wheel Fitment Specifications
Your 2013 Chevy Silverado 1500 uses a six-lug wheel mounting system with a 139.7 mm bolt circle. Correct hub bore, lug-nut thread, and wheel offset also determine whether a wheel mounts securely.
Six-Lug Hub Configuration
Your truck uses a 6×139.7 mm bolt pattern, also written as 6×5.5 inches. The first number identifies the six wheel studs; the second identifies the diameter of the circle running through their centers.
Factory-fit wheels need a 78.1 mm center bore to match the hub correctly. A wheel with a larger bore can fit only when you install properly sized hub-centric rings; a smaller bore will not mount over the hub.
| Fitment item | Specification |
|---|---|
| Bolt pattern | 6×139.7 mm / 6×5.5 in |
| Center bore | 78.1 mm |
| Lug-nut thread | M14×1.5 |
| Typical lug-nut torque | 140 lb-ft |
You should verify wheel width and offset before buying aftermarket wheels, since factory sizes vary by trim and tire package. The 2013 Silverado 1500 wheel-fitment specifications list original wheel and tire options by configuration.
Bolt Circle Measurement
You measure the bolt circle on a six-lug wheel from the center of one stud directly across to the center of the opposing stud. On your Silverado, that measurement equals 139.7 mm, or 5.5 inches.
Because the pattern uses an even number of lugs, you can measure straight across the hub rather than estimating between adjacent studs. A wheel marked 6×5.5, 6×139.7, or 6×139.7 mm matches the factory bolt circle.
Do not confuse this pattern with 6×135 or 6×120 patterns. Although those wheels also have six mounting holes, their stud locations differ and they will not align with your hub.
Check the wheel’s offset, center bore, and load rating after confirming the bolt circle. The 2013 Silverado 1500 6×139.7 bolt-pattern listing also identifies the factory pattern for this model year.
Compatible Model Years And Platforms
Your 2013 Silverado 1500 uses a 6×139.7 mm (6×5.5-inch) bolt pattern. Matching the bolt pattern is necessary, but you must also verify center bore, wheel offset, brake clearance, and wheel load rating.
GMT900 Truck Applications
The 2013 Silverado 1500 belongs to GM’s GMT900 generation. Factory wheels from 2007–2013 Silverado 1500 trucks generally provide the most straightforward fitment because they were designed around the same chassis family and brake package.
This includes 2WD and 4WD regular-cab, extended-cab, and crew-cab 1500 models. The 2008–2013 Silverado 1500 wheel specifications list the 78.1 mm hub bore and M14×1.5 lug-nut thread used by these trucks.
| Vehicle group | Model years | Bolt pattern | Fitment note |
|---|---|---|---|
| Silverado 1500 GMT900 | 2007–2013 | 6×139.7 | Confirm wheel diameter and offset |
| Silverado 1500 GMT800 | 1999–2006 | 6×139.7 | May fit, but inspect offset and brake clearance |
| Silverado 2500HD/3500HD | 2007–2013 | 8-lug | Not compatible with a 1500 |
Do not treat a 2500HD or 3500HD wheel as a candidate simply because it is a Silverado wheel. These trucks use an eight-lug hub rather than your six-lug mounting pattern.
Interchangeable Chevrolet And GMC Wheels
You can use many OEM wheels from the 2007–2013 GMC Sierra 1500 because the Sierra and Silverado 1500 share the GMT900 truck platform, six-lug hub layout, and basic wheel mounting dimensions. Silverado 1500 wheels from later generations can also share the pattern, but you should not assume every wheel clears your brakes or sits at the correct position.
The 2013 Silverado 1500 wheel fitment specifications identify the vehicle’s wheel dimensions, bolt pattern, center bore, and original tire options. Use those values to compare any donor wheel before purchase.
Check these items before installing a Chevrolet or GMC wheel:
- Bolt pattern: 6×139.7 mm / 6×5.5 in.
- Center bore: A wheel bore smaller than 78.1 mm will not mount on the hub.
- Offset and backspacing: Incorrect dimensions can cause rubbing against suspension parts or place the tire outside the fender.
- Load rating: Your replacement wheel must support your truck’s axle loads.
- Lug-seat design: Match the wheel’s seat type to the correct lug nuts; do not reuse lug nuts if the seat style differs.
Wheel Offset And Backspacing Considerations
Your 2013 Silverado 1500 uses a 6×139.7 mm bolt pattern, but correct offset and backspacing determine whether the wheel clears suspension parts, brakes, and fenders. Match these measurements to your wheel width and tire size before buying.
Factory Offset Range
Most factory 2013 Silverado 1500 wheels use approximately +31 mm offset. Common OEM wheel dimensions include 17×7.5, 18×8, and 20×8.5, with fitment details listed in this 2013 Silverado 1500 wheel-size guide.
| Typical OEM wheel size | Approximate offset | Approximate backspacing |
|---|---|---|
| 17×7.5 | +31 mm | 5.5 in. |
| 18×8 | +31 mm | 6.7 in. |
| 20×8.5 | +31 mm | 7.0 in. |
A higher positive offset moves the wheel inward toward the frame and suspension. A lower offset, such as +18 mm or 0 mm, moves the wheel outward and increases tire poke.
Backspacing measures the distance from the wheel’s mounting pad to its inner lip. You need both measurements because the same offset produces different backspacing on wheels with different widths.
Clearance With Suspension And Brakes
You should check inner clearance whenever you choose a wider wheel or reduce positive offset. Moving an 8-inch-wide wheel from +31 mm to +18 mm shifts it about 13 mm outward, increasing outer-fender clearance concerns while creating more room near the upper control arm.
On a stock-height truck, wide tires and aggressive offsets can contact the plastic fender liner, front bumper valance, or rear portion of the front wheel opening during turns. Larger tire diameters increase this risk more than wheel diameter alone.
Brake clearance also depends on wheel barrel shape and spoke design. A 17-inch wheel may fit over standard brakes, but some aftermarket 17-inch wheels can interfere with calipers despite having the correct bolt pattern and offset.
Before ordering, compare your current and proposed setup with a wheel offset and backspacing calculator. Verify clearance at full steering lock and full suspension compression, especially if you use aftermarket upper control arms, a leveling kit, or larger-than-stock tires.
Selecting Aftermarket Wheels
Your wheels must match the Silverado’s 6×139.7 mm (6×5.5-inch) bolt pattern, hub fitment, and axle-load requirements. Correct center-bore sizing and adequate load ratings matter as much as diameter and appearance.
Center Bore Requirements
A 2013 Silverado 1500 uses a 78.1 mm center bore. Select wheels with a 78.1 mm bore for a direct hub-centric fit, or use wheels with a larger bore and correctly sized hub-centric rings.
Hub-centric rings fill the gap between the 78.1 mm hub and the wheel’s larger center bore. They help center the wheel during installation, while the lug nuts clamp the wheel to the hub.
Do not use a wheel with a center bore smaller than 78.1 mm; it will not seat on the hub. Confirm this measurement along with the 2013 Silverado 1500 bolt pattern and wheel-fitment specifications before ordering.
Use the correct lug nuts for the wheel’s seat type:
- Conical/tapered seat: Common on many aftermarket wheels
- Ball seat: Used only when the wheel manufacturer specifies it
- Shank seat: Requires the exact shank diameter and length
Load Rating And Wheel Size
Each aftermarket wheel must carry at least the load imposed by your truck’s heaviest axle. Check the driver-door certification label for the front and rear GAWR, then choose wheels rated for at least half of the applicable axle rating per wheel.
For example, a rear axle rated at 4,000 pounds requires rear wheels rated for at least 2,000 pounds each. Do not rely on a wheel’s appearance, diameter, or “truck wheel” marketing instead of its published load rating.
Factory wheel diameters commonly include 17-, 18-, and 20-inch options, depending on trim and package. When changing diameter or width, keep the tire’s overall diameter close to stock to protect speedometer accuracy, gearing, and clearance.
Verify offset and backspacing before moving to wider wheels or tires. The 2013 Silverado wheel and tire fitment guide lists trim-specific sizing details, but you should still confirm clearance around brake components, suspension parts, and fender liners on your truck.
Lug Nuts And Installation Requirements
Your 2013 Chevy Silverado 1500 uses M14 × 1.5 wheel studs and lug nuts, with a specified final tightening torque of 140 lb-ft. Match the lug-nut seat to the wheel and tighten in a controlled crisscross pattern to secure the wheel evenly.
Thread Size And Seat Type
Your truck uses M14 × 1.5 lug nuts on its six-lug hubs. The M14 measurement identifies the stud diameter, while 1.5 mm identifies the thread pitch; using a different thread size can damage the studs or prevent proper engagement.
Factory-style wheels normally use lug nuts with a 60-degree conical (acorn/tapered) seat. Aftermarket wheels may require a different seat design, such as ball-seat or shank-style hardware, even if the wheel has the correct 6×139.7 mm bolt pattern.
| Requirement | Specification |
|---|---|
| Thread size | M14 × 1.5 |
| Factory-style seat | 60-degree conical |
| Lug-nut hex size | Typically 22 mm |
| Hub bore | 78.1 mm |
Do not install conical lug nuts on wheels designed for flat, ball, or shank seats. Confirm the wheel manufacturer’s hardware requirement before installation; 2013 Silverado 1500 wheel-fitment specifications list the factory bolt pattern, center bore, and related dimensions.
Proper Torque Procedure
Tighten the lug nuts by hand first, ensuring each nut threads smoothly for several full turns. Do not use an impact wrench to start lug nuts, because cross-threading can ruin a wheel stud.
With the wheel seated against the hub, snug the six lug nuts in a star pattern. Lower the truck until the tire contacts the ground enough to prevent rotation, then use a calibrated torque wrench to tighten each nut to 140 lb-ft in the same pattern.
- Tighten one lug nut.
- Move across the wheel to the opposite nut.
- Continue in a crisscross sequence until all six reach 140 lb-ft.
- Repeat the pattern once to verify final torque.
Use the torque value specified for the 2013 Chevrolet Silverado lug nuts and wheel hardware. Recheck torque after approximately 50 to 100 miles when you install new wheels, replace lug nuts, or remove and reinstall a wheel.
Measuring An Existing Wheel
You need to confirm the lug-circle diameter, center bore, and offset before reusing or replacing a wheel. A 2013 Silverado 1500 uses a 6×139.7 mm (6×5.5-inch) bolt pattern, but matching the pattern alone does not guarantee proper fitment.
How To Measure A Six-Lug Pattern
Remove the wheel or position it so you can accurately access the lug holes. On a six-lug wheel, measure from the center of one lug hole directly across to the center of the opposite lug hole; this gives the bolt-circle diameter.
For your Silverado wheel, the measurement should be 5.5 inches, or 139.7 mm. Do not measure from the outer edge of one hole to the outer edge of another, since that produces an inaccurate result.
| Measurement | Correct specification |
|---|---|
| Lug holes | 6 |
| Bolt-circle diameter | 139.7 mm |
| Inch equivalent | 5.5 in. |
| Bolt pattern notation | 6×139.7 or 6×5.5 |
Use a tape measure only for a quick check. A digital caliper or bolt-pattern gauge gives a more reliable measurement, especially if the wheel has oversized or worn lug holes.
Verifying Center Bore And Offset
Measure the center bore at the back of the wheel with a digital caliper. The factory hub diameter for the 2013 Silverado 1500 is 78.1 mm, so a wheel with a smaller bore will not mount on the hub. A larger bore can fit only when you install correctly sized hub-centric rings.
Check the wheel’s inner spokes or rear barrel for stamped specifications such as 17x8J ET31; ET31 means a positive 31 mm offset. Offset measures the distance between the wheel centerline and its hub-mounting pad.
To measure an unstamped wheel, determine its total width from outer bead seat to outer bead seat, divide that number by two, then compare it with the mounting-pad position. Factory offset varies by wheel size and configuration, so verify your wheel’s marking and compare it against the applicable 2013 Silverado 1500 wheel-fitment specifications.
Common Fitment Mistakes To Avoid
Your 2013 Silverado 1500 needs a six-lug wheel with the correct hub bore and offset, not merely a wheel that appears to match. Tire diameter, wheel width, and backspacing also determine whether the package clears the truck during turns and suspension movement.
Confusing Half-Ton And Heavy-Duty Models
Do not order wheels based only on the Silverado name. Your 2013 Silverado 1500 uses a 6×139.7 mm (6×5.5-inch) bolt pattern, a 78.1 mm center bore, and M14×1.5 lug nuts; confirm these details against a 2013 Silverado 1500 wheel-fitment listing before buying.
Silverado 2500HD and 3500HD trucks use eight-lug wheel patterns, so their factory wheels will not mount on your 1500. A wheel can share the same diameter and still be incompatible because the lug count, bolt-circle diameter, center bore, or offset differs.
Check the wheel’s stamped specifications or seller documentation. Avoid relying on “fits Silverado” listings unless they specifically identify the 2013 1500 rather than a heavy-duty model.
Ignoring Tire And Fender Clearance
A correct bolt pattern does not guarantee adequate clearance. Wider wheels, lower offsets, and larger tires can contact the front fender liner, mud flap, bumper valance, or suspension parts, especially at full steering lock or when the suspension compresses.
Factory tire sizes vary by trim and wheel package, from 245/70R17 through 275/55R20. A 2008–2013 Silverado fitment guide identifies 275/60R20, roughly a 33-inch tire, as a commonly comfortable no-lift maximum, but wheel offset and truck-specific accessories can change the result.
Before ordering, verify all of these measurements:
- Tire diameter and section width
- Wheel width and offset
- Backspacing
- Existing lift or leveling height
- Clearance at full left and right steering lock
If you choose an aggressive offset that pushes the wheel outward, test clearance under load rather than checking only while the truck sits parked.
Frequently Asked Questions
Your 2013 Chevrolet Silverado 1500 uses a six-lug, 6×139.7 mm (6×5.5-inch) pattern and a 78.1 mm hub bore. Factory wheel diameters range from 17 to 20 inches, depending on your trim and package.
What is the wheel bolt pattern for a 2013 Chevrolet Silverado 1500?
Your 2013 Silverado 1500 has a 6×139.7 mm bolt pattern, also written as 6×5.5 inches. This means the wheel has six lug holes on a 139.7 mm diameter circle.
You can confirm this specification through this 2013 Silverado 1500 bolt-pattern listing.
Will 6×5.5 wheels fit a 2013 Silverado 1500?
Yes, wheels with a 6×5.5 bolt pattern fit your Silverado because 6×5.5 equals 6×139.7 mm.
You still need to check wheel diameter, width, offset, center bore, brake clearance, and lug-nut seat type. A matching bolt pattern alone does not guarantee safe fitment.
What are the factory wheel sizes for a 2013 Chevrolet Silverado 1500?
Your truck could have factory 17×7.5, 18×8, or 20×8.5 wheels, depending on its trim level and equipment. Common original tire sizes include 245/70R17, 265/70R17, 265/65R18, and 275/55R20.
Check the tire-and-loading label on your driver-side door jamb to identify the original size specified for your truck. 2013 Silverado wheel and tire fitment data also lists specifications by configuration.
Do all 2013 Silverado 1500 models use the same lug pattern?
Yes. Regular Cab, Extended Cab, and Crew Cab versions of the 2013 Silverado 1500 use the 6×139.7 mm (6×5.5-inch) lug pattern.
This applies to both two-wheel-drive and four-wheel-drive Silverado 1500 models. Do not apply this specification to Silverado 2500HD or 3500HD trucks, which use a different eight-lug pattern.
What is the center bore size for 2013 Silverado 1500 wheels?
Your 2013 Silverado 1500 has a 78.1 mm center bore. A wheel with this bore size fits the hub directly.
You can use wheels with a larger center bore only with properly sized hub-centric rings. Do not use wheels with a smaller center bore because they will not seat on the hub.
Will six-lug Ford wheels fit a 2013 Chevrolet Silverado 1500?
Most modern six-lug Ford wheels will not fit because many Ford trucks use a 6×135 mm bolt pattern rather than your Silverado’s 6×139.7 mm pattern.
Some older Ford wheels use 6×5.5, but you must still verify their center bore, offset, wheel width, brake clearance, and lug-seat design before installing them.
