Can I Fit 33s On Stock Colorado?

The Chevrolet Colorado is a popular mid-size truck known for its versatility and off-road capabilities. A common modification many Colorado owners consider is upgrading to larger tires, specifically 33-inch tires. But can you fit 33s on a stock Colorado without any modifications? This article will delve into the specifics, exploring the challenges, potential solutions, and what you need to know before making the switch.

Will 33s Fit on a Stock Colorado?

The short answer is: it depends. While some Colorado models might technically fit 33-inch tires, doing so without any rubbing or performance issues is highly unlikely. Significant trimming, modifications, or a lift kit are almost always required. Let's dive into the specifics.

Comprehensive Data Table: 33s on Stock Colorado

Detailed Explanations:

Tire Size (33-inch): This refers to the overall diameter of the tire. A 33-inch tire is significantly larger than the stock tires found on most Colorados. Different tire widths (e.g., 10.5, 11.5, 12.5) can also impact fitment. Always double-check the manufacturer's actual measurements, as a tire labeled "33-inch" might not be exactly 33 inches in diameter.

Stock Tire Size (Colorado): The factory tire size varies depending on the trim level and year of your Colorado. Knowing your stock tire size is crucial because it serves as a baseline for comparison when considering larger tires. You can find this information on the driver's side door jamb.

Wheel Offset: Wheel offset is the distance from the wheel's mounting surface to its centerline. A positive offset means the mounting surface is closer to the outside of the wheel, tucking the wheel in. A negative offset pushes the wheel outward. Offset plays a crucial role in tire clearance.

Suspension Configuration: The suspension configuration, including ride height and components, directly affects how much room you have for larger tires. The ZR2 models have a factory lift that provides more clearance than other trims.

Rubbing Points: Common areas where 33-inch tires might rub on a stock Colorado include the inner fender liners, the front and rear of the wheel wells, the sway bar, the frame, and the control arms. Identifying these potential rubbing points is the first step in addressing the issue.

Necessary Modifications: To fit 33s on a stock Colorado, you'll likely need to consider modifications such as a lifting or leveling kit to increase ride height, fender trimming to create more space, and potentially sway bar relocation to prevent rubbing.

Impact on Performance: Larger tires can negatively impact your truck's performance. You may experience reduced fuel economy due to the increased weight and rolling resistance, altered speedometer readings because the tires cover more ground per revolution, and potentially decreased acceleration due to the higher gearing effect. Braking feel can also be affected.

Wheel Size: The wheel size (diameter) must be compatible with the 33-inch tire you choose. A 33-inch tire will not fit on just any wheel.

ZR2 Specifics: The ZR2 Colorado comes with a factory lift and a wider track width, which significantly improves the chances of fitting 33-inch tires with minimal modifications. In some cases, only minor trimming or a small leveling kit might be required.

Aftermarket Bumpers: Aftermarket bumpers can often provide more tire clearance than the stock bumper, especially in the front. This can be a helpful solution if you are experiencing rubbing issues in that area.

Body Mount Chop (BMC): A Body Mount Chop involves cutting and welding the body mount to create more space for larger tires. This is a more aggressive modification that's usually not necessary for 33s on a Colorado but may be required for even larger tires or specific wheel offsets.

Speedometer Recalibration: After installing 33-inch tires, your speedometer will likely be inaccurate. Recalibrating it is essential for accurate speed readings and proper vehicle function. This can be done using a tuner or by a specialist shop.

Fuel Economy Impact: Expect a decrease in fuel economy after installing 33-inch tires. The extent of the decrease will depend on the weight of the tires, your driving habits, and other factors.

Gear Ratio Considerations: Stock gear ratios may feel sluggish with larger tires, especially when accelerating or towing. Re-gearing can improve performance by restoring the original gear ratio.

Sway Bar Interference: Larger tires can rub against the sway bar. Sway bar relocation brackets can move the sway bar out of the way. Removing the sway bar is also an option, but it's not recommended for on-road driving as it can negatively affect handling.

Lift/Leveling Kit Size: A 2-3 inch lift or leveling kit is generally recommended for fitting 33-inch tires on a Colorado. Choose a kit that suits your needs and budget and research reputable brands.

Alignment: Installing larger tires and a lift or leveling kit can affect your truck's alignment. A professional alignment is essential to ensure proper tire wear and handling.

Load Rating: Ensure that the tires you choose have an adequate load rating for your truck. The load rating indicates the maximum weight the tire can safely carry.

Backspacing: Wheel backspacing affects how the wheel sits in the wheel well. Correct backspacing is essential to prevent rubbing. Consult with a tire specialist to determine the appropriate backspacing for your application.

Frequently Asked Questions:

Will 33s fit on a stock Colorado ZR2? Yes, the ZR2 has a better chance of fitting 33s with minimal modification due to its factory lift and wider track. Minor trimming or a small leveling kit might be necessary.

What size lift kit do I need for 33s on a Colorado? Generally, a 2-3 inch lift kit is recommended to comfortably fit 33-inch tires on a Colorado.

Will 33s affect my Colorado's gas mileage? Yes, larger and heavier tires will likely decrease your fuel economy due to increased rolling resistance and weight.

Do I need to recalibrate my speedometer after installing 33s? Yes, recalibrating your speedometer is necessary for accurate speed readings after installing larger tires.

Will 33s rub on my stock Colorado? Most likely, yes. Without modifications like a lift or trimming, 33s will likely rub against the fender liners, sway bar, or other components.

Conclusion:

While technically possible on some Colorado models, fitting 33-inch tires on a completely stock Colorado without any modifications is highly improbable and not recommended. Expect rubbing and performance issues. A lift or leveling kit, combined with fender trimming, is generally necessary to ensure proper clearance and optimal performance. Consider the impact on fuel economy, speedometer accuracy, and gearing before making the switch.