Levelled on factory 20s
- Front and rear
- 20 × 8.5 inch, ET31 · 285/55 R20
RealTruck's Silverado size guide lists 285/55 R20 on the factory 20-inch wheels for a 2007–2013 truck with a 2-inch levelling kit.
2007–2013 · pickup
Chevrolet Silverado 1500 2nd gen (GMT900) wheel fitment
The GMT900 Silverado 1500 came on 17, 18 or 20-inch wheels, all with the same six-stud hub and a fairly high factory offset. The usual change is a 2-inch front levelling kit with lower-offset wheels and a taller all-terrain tyre, which fills the arches without a full lift.
6x139.7 bolt pattern · 78.1 mm centre bore · Stock wheels: 17 × 7.5, 18 × 8, 20 × 8.5 inch · Stock tyres: 245/70 R17, 265/70 R17, 265/65 R18, 275/55 R20
Updated 2026-10-31 · High source confidence. Check your exact trim and market. How we check specs
Quick specs
| Specification | Value |
|---|---|
| Bolt pattern | |
| Stock tyre sizes | |
| Centre bore | 78.1 mm |
| Fastener and thread | Wheel nut, M14x1.5 |
| Tightening torque | 190 Nm (confirm in your handbook) |
Stock wheels and tyres
Factory options vary by trim and market. Match your car to the row below and check its tyre placard before using it as a baseline.
| Trim | Axle | Wheel | Tyre |
|---|---|---|---|
| 17-inch, standard tyre | Front and rear | 17 × 7.5 inch, ET31 | 245/70 R17 |
| 17-inch, larger optional tyre | Front and rear | 17 × 7.5 inch, ET31 | 265/70 R17 |
| 18-inch, including Hybrid | Front and rear | 18 × 8 inch, ET31 | 265/65 R18 |
| 20-inch option | Front and rear | 20 × 8.5 inch, ET31 | 275/55 R20 |
Explained in our guides
Read these before choosing wheels for the Silverado 1500: they explain the offset, fitment and hub numbers in this guide.
- Wheel offset explained: choosing ET without guessingUnderstand positive and negative wheel offset, calculate inner clearance and outer position, and choose an ET using measurements from your own car.
- Lifted truck wheel fitment: backspacing, 33s, 35s and trimmingPlan larger truck tyres around lift-kit requirements, backspacing, steering and articulation. Compare 33 and 35 inch tyres without assuming a lift guarantees clearance.
- Hub-centric vs lug-centric wheels: choosing hub ringsLearn what hub rings do, how to specify their inner and outer diameters, and why centring, wheel seats and vibration need separate checks.
Popular community setups
Starting points for a build. Read the notes with each setup, especially if your car is lowered or has different brakes.
Levelled 18x9
- Front and rear
- 18 × 9 inch, ET18 · 265/65 R18
Listed by RealTruck for the GMT900 with a 2-inch level. It keeps the factory 18-inch tyre size and pushes the wheel out about 25 mm to fill the arch.
Levelled 17x9 low offset
- Front and rear
- 17 × 9 inch, ET0 · 265/70 R17
RealTruck lists 17x9 wheels at ET0 or ET1 with 265/70 R17 for a levelled 2007–2013 truck. The wheel sits well outside the factory position, so check clearance at full lock.
Width and offset guidance
Offset range
Check the exact setup
There is no confirmed range for this car yet. Compare a known wheel with your proposed size and measure both sides.
Common width limit
Measure before ordering
A maximum width has not been confirmed. Tyre shape, ride height and alignment all change the available space.
These figures belong to the setups described here. Combining the widest wheel with either end of the offset range does not guarantee a safe fit. For how ET moves the wheel in and out, read wheel offset explained; for how far the tyre can sit out, see flush, poke and tucked fitment.
Clearance notes
- These figures are for the six-stud half-ton. The 2500HD and 3500 use eight-stud hubs.
- 2007 was a crossover year. The Silverado Classic sold that year is the older GMT800, so confirm which body your truck has before ordering.
- All factory wheels for this generation are ET31. Lower-offset aftermarket wheels push the tyre outwards, which is what makes room for wider tyres but also brings the tread closer to the bumper and arch liner at full lock.
- A levelling kit lifts only the front. It does not prove clearance on its own, so test the tyre against the bumper, arch liner and mud flaps through full lock and full compression.
- Torque wheel nuts to 190 Nm (140 lb-ft) and use nuts with the seat the new wheel needs.
- Check full steering lock and suspension travel with the car loaded. Match wheel load rating, tyre load and speed ratings, fastener seats and brake clearance.
See it on your car.
Upload a photo and start with a look that suits the Silverado 1500. Try the wheels, colour and stance before you spend on parts.
An AI preview shows the look. It cannot verify physical fitment.
Run the numbers
These tools start with the 17-inch, standard tyre front size. Choose your own trim or axle in the calculator if it differs.
Questions
What is the bolt pattern of a 2007–2013 Silverado 1500?
6x139.7 (6x5.5 inches), with a 78.1 mm centre bore and M14x1.5 wheel nuts.
What size tyres can I fit with a 2-inch levelling kit?
RealTruck lists 285/55 R20 on the factory 20s, 285/65 R18 on factory 18s and 285/70 R17 on factory 17s. Check full-lock clearance on your truck.
What offset are the factory wheels?
ET31 on every factory 17, 18 and 20-inch wheel for this generation.
Do GMT800 Silverado wheels fit a GMT900?
The half-ton bolt pattern, bore and thread are the same, so six-stud 1500 wheels bolt on. Check the offset and brake clearance of the particular wheel.
What wheel size does the Chevrolet Silverado 1500 2nd gen (GMT900) use?
Factory wheels are 17 × 7.5 inch, 18 × 8 inch and 20 × 8.5 inch, depending on trim. The stock table lists the offset for each.
What is the Chevrolet Silverado 1500 2nd gen (GMT900) centre bore?
78.1 mm. Aftermarket wheels with a larger bore need hub-centric rings sized to it.
What is the Chevrolet Silverado 1500 2nd gen (GMT900) wheel nut torque?
190 Nm (about 140 lb-ft) for the original nuts. Confirm in your handbook, especially with aftermarket wheels or nuts.
Specs checked against
- TireWheelGuide: 2010 Silverado 1500 sizes, bore and thread
- Wheel-Sizes: Silverado 1500 lug nut thread by year
- Velgen: Silverado wheel torque by year
- RealTruck: Chevy Silverado tyre size guide
- Performance Lifts: Fabtech 2-inch level for 2007-on Silverado 1500
This guide is a starting point, not a fitment guarantee. Specs can differ by market, trim and previous modifications. Confirm all sizes, clearances and fastener requirements with a qualified wheel and tyre professional before buying or fitting parts.
Related cars
More guides from Chevrolet or cars with the same bolt pattern. A matching pattern alone does not make a wheel interchangeable.