Will 33 Inch Tires Fit a Stock Gmc Sierra : Ultimate Guide for Sierra Owners

Are you considering upgrading the tires on your GMC Sierra and wondering if 33-inch tires will fit on a stock setup? Many truck owners often contemplate increasing the tire size to enhance the appearance and off-road capabilities of their vehicles. In this article, we will delve into whether 33-inch tires will fit a stock GMC Sierra and what considerations you need to keep in mind before making the switch.

Understanding Tire Sizes

Before we address the compatibility of 33-inch tires with a stock GMC Sierra, it’s important to understand how tire sizes are measured. The size of a tire is typically represented by a series of numbers, with the first number indicating the width of the tire in millimeters, the second number representing the aspect ratio or the height of the sidewall as a percentage of the width, and the final number denoting the diameter of the wheel in inches.

Stock GMC Sierra Tire Size

Depending on the specific model and trim of your GMC Sierra, the stock tire size can vary. Typically, a stock GMC Sierra 1500 comes equipped with 265/70R17 tires, which means they have a width of 265mm, a sidewall height that is 70% of the width, and they are designed to fit a 17-inch wheel. However, it’s important to verify the exact specifications of your particular vehicle, as they can differ based on the year and trim.

Will 33-Inch Tires Fit?

Now, let’s address the big question: will 33-inch tires fit a stock GMC Sierra? The short answer is yes, but with some considerations. Most GMC Sierras can accommodate 33-inch tires without the need for a lift or any major modifications. The key is to ensure that there is enough clearance within the wheel well to accommodate the larger tires. It’s important to note that while the diameter of the 33-inch tire will fit, the width of the tire also plays a crucial role. If the 33-inch tires are too wide, they may rub against the fenders during sharp turns or when driving over bumps.

Considerations Before Upgrading

Before making the switch to 33-inch tires, there are a few considerations that you should keep in mind:

  1. Wheel Offset: The offset of the wheel can impact how the tires fit within the wheel well. A positive offset brings the tires further into the wheel well, while a negative offset pushes the tires outward. It’s essential to ensure that the new tires and wheels will not interfere with any suspension components or the vehicle’s body.
  2. Suspension: Upgrading to larger tires can put additional strain on the suspension components. You may need to consider upgrading the suspension to accommodate the larger tires and prevent any rubbing issues.
  3. Speedometer and Odometer Calibration: Installing larger tires can affect the accuracy of your speedometer and odometer readings. You may need to recalibrate these systems to ensure they provide accurate information.

Benefits of Upgrading to 33-Inch Tires

Despite the considerations involved, there are several benefits to upgrading to 33-inch tires on a stock GMC Sierra. These benefits include:

  • Enhanced Off-Road Capability: Larger tires provide improved ground clearance and traction, allowing your GMC Sierra to navigate more challenging off-road terrain.
  • Improved Aesthetics: 33-inch tires can give your truck a more aggressive and commanding look, enhancing its overall appearance.
  • Better Traction: Wider and larger tires can offer increased traction, especially in off-road or adverse weather conditions.
  • Ability to Mount Larger Wheels: 33-inch tires open up the possibility of mounting larger wheels, which can further enhance the visual appeal of your GMC Sierra.

Frequently Asked Questions For Will 33 Inch Tires Fit A Stock Gmc Sierra : Ultimate Guide For Sierra Owners

Will 33 Inch Tires Fit A Stock Gmc Sierra?

We recommend consulting with a professional mechanic for exact fitment on your vehicle.

What Are The Benefits Of Upgrading To 33 Inch Tires?

Upgrading to 33-inch tires can improve ground clearance and off-road capability on your GMC Sierra.

Are There Any Modifications Needed For Installing 33 Inch Tires?

Depending on your specific GMC Sierra model, you may need a suspension lift kit for proper clearance.

How Will 33 Inch Tires Affect My Gmc Sierra’s Performance?

While larger tires can enhance off-road performance, they may slightly affect fuel economy and acceleration.


In conclusion, 33-inch tires can fit a stock GMC Sierra in most cases, providing a range of benefits in terms of aesthetics and off-road performance. However, it’s crucial to consider the potential modifications and adjustments that may be required to accommodate the larger tires properly. As with any modification, it’s recommended to consult with a professional or a trusted mechanic to ensure that the upgrade is done safely and effectively.

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