Will This Affect Fuel Economy? What You Need to Know Before Upgrading Your Tires or Wheels

Blog Post
When customers ask us at Canada Custom Autoworks whether a change will affect fuel economy, the honest answer is simple: yes, it can. But how much it changes depends entirely on what you’re upgrading and how your vehicle is used. From larger tires to heavier wheels and more aggressive tread patterns, even small changes can impact how efficiently your vehicle uses fuel. The key is understanding where those changes come from and how to balance performance, appearance, and efficiency.

Why fuel economy changes after tire or wheel upgrades

Your vehicle is engineered with a specific tire and wheel setup in mind. When you move away from that factory setup, you’re changing how much effort the engine needs to move the vehicle. Here are the main reasons fuel economy is affected:
  • Increased weight requires more energy to accelerate
  • Larger diameters change the effective gearing
  • Wider tires create more contact with the road
  • Aggressive tread patterns increase rolling resistance
Individually, these may seem minor. Combined, they can noticeably reduce MPG. Pickup truck with larger aftermarket wheels and tires illustrating potential impact on fuel economy and gas mileage.

The biggest factors that affect fuel economy

Tire size and overall diameter

Upgrading to larger tires is one of the most common changes we see. While it improves ground clearance and gives your vehicle a more aggressive look, it also increases rotational mass and changes how your drivetrain operates. In realworld terms:
  • Moving from a stock setup to 33″ tires may slightly reduce fuel economy
  • Jumping to 35″ or larger tires typically has a more noticeable impact
Larger tires require more effort to get moving and maintain speed, especially in city driving.

Tire weight and wheel package

One of the most overlooked factors is total weight. Many aftermarket wheels and larger tires are significantly heavier than stock. At our shop, we often see:
  • Heavier wheel and tire packages reduce responsiveness
  • Increased strain during acceleration and braking
  • A direct drop in fuel efficiency due to added rotational mass
Even a small weight increase per corner adds up quickly across all four wheels.

Tread design and tire type

Not all tires are built the same. The type of tire you choose plays a major role in fuel consumption.
  • Highway and allseason tires are designed for efficiency and lower rolling resistance.
  • Allterrain tires strike a balance between traction and fuel economy
  • Mudterrain tires offer maximum grip, but typically reduce fuel efficiency the most
If you’re running aggressive offroad tires for daily driving, you will likely see higher fuel consumption.

Tire pressure and maintenance

This is the easiest factor to control and one of the most important. Underinflated tires:
  • Increase rolling resistance
  • Create more drag
  • Force the engine to work harder
Properly inflated tires:
  • Roll more efficiently
  • Improve fuel economy
  • Extend tire life
Regular checks, especially with seasonal temperature changes, make a measurable difference. Truck with oversized wheels and tires showing increased fuel consumption due to larger tire size.

Wheel Offset and Width

Changing your wheel offset or running wider setups can also affect fuel economy. Wider tires:
  • Increase the contact patch with the road
  • Add rolling resistance
  • Can create more aerodynamic drag
More aggressive offsets may also push the tires outward, slightly increasing resistance and affecting efficiency.

Realworld example from our shop

A common upgrade we see is a truck moving from a factory setup to:
  • Larger allterrain tires
  • Aftermarket wheels with a more aggressive offset
In this scenario, fuel economy often drops due to:
  • Increased tire weight
  • More rolling resistance from the tread
  • Wider stance and added drag
That doesn’t mean it’s a bad upgrade. It just means you should expect the tradeoff. Here’s a refined, structured version with a strong headline, clean paragraph, and a clear table.

How to minimize fuel economy loss after tire and wheel upgrades

Upgrading your tires and wheels doesn’t have to mean sacrificing fuel efficiency. With the right approach, you can maintain a strong balance between performance, appearance, and everyday drivability. The key is making smart choices during the upgrade process. Selecting the right tire for your driving habits, avoiding unnecessary weight, staying within practical sizing, and keeping up with proper maintenance all play a major role in protecting your fuel economy. Small decisions at each step can make a noticeable difference in how your vehicle performs at the pump.
Factor What to Do Why It Matters
Tire Selection Choose tires that match your driving style (highway, allterrain, or offroad) Aggressive tread patterns increase rolling resistance and fuel consumption
Weight Opt for lighter wheels and tire combinations when possible Heavier setups require more energy to accelerate and maintain speed
Tire Size Stay close to recommended or practical upsizing Oversized tires increase rotational mass and reduce efficiency
Tire Pressure Regularly check and maintain proper inflation Underinflated tires create more drag and waste fuel
Alignment Perform a professional alignment after upgrades Ensures even tire wear and reduces unnecessary resistance

Is the fuel economy tradeoff worth it?

That depends on your priorities. If your goal is:
  • Better offroad performance
  • A more aggressive stance
  • Improved traction in tough conditions
Then a slight drop in fuel economy is often part of the package. But if fuel efficiency is a top priority, staying closer to stock sizing and less aggressive tread patterns is the better choice. Close-up of large truck tire showing how tire size impacts rolling resistance and fuel economy. Any change to your tires or wheels can affect fuel economy, but it’s not just about losing MPG. It’s about understanding the tradeoffs and choosing a setup that fits your driving style. At Canada Custom Autoworks, we help customers build setups that balance performance, appearance, and everyday usability. Whether you’re upgrading for looks, capability, or both, we’ll guide you toward options that make sense for your vehicle and how you drive.

Ready to Upgrade the Right Way?

If you’re considering new tires, wheels, or a full setup, our team is here to help you make the right choice from the start.