When someone decides to lift a truck, one of the first questions that follows is simple: what size tires should I run? Tire size dramatically affects the way a truck looks, drives, performs off-road, and even how long key components last. For many enthusiasts, the decision between 33-inch, 35-inch, 37-inch, or even 40-inch tires defines the entire character of the build.
At Lifted Trucks, this is a question our team helps customers navigate every day. Choosing the right tire size is not just about going as big as possible. It requires understanding clearance, gearing, suspension geometry, braking performance, drivability, and long-term reliability.
This guide breaks down the real differences between the most common lifted truck tire sizes and explains the additional technical considerations required when stepping into 37-inch tires and beyond.
Why Tire Size Matters More Than Most People Realize
Bigger tires change much more than appearance. When you increase tire diameter, you effectively alter several mechanical aspects of the vehicle:
• Effective gear ratio
• Acceleration and torque delivery
• Braking distance
• Steering geometry
• Fuel economy
• Speedometer accuracy
• Drivetrain load
• Suspension travel and articulation
A well-engineered lifted truck build takes all of these variables into account so the vehicle remains safe, predictable, and enjoyable to drive both on-road and off-road.
Understanding Tire Size Basics
Most off-road tire sizes are expressed in inches, such as 33-inch, 35-inch, 37-inch, and 40-inch tires. The number refers to the approximate overall diameter of the tire.
Common off-road sizes include:
• 33x12.50R17
• 35x12.50R18
• 37x12.50R20
• 40x13.50R20
As tire diameter increases, both height and rotating mass increase, which places greater demand on suspension, axles, steering components, and drivetrain systems.
33-Inch Tires: The Entry-Level Upgrade
33-inch tires are often considered the gateway size for lifted trucks.
They typically fit on many trucks with:
• leveling kits
• small suspension lifts
• minimal trimming
For drivers who want a more aggressive look without significantly altering drivability, 33s offer a balanced option.
Advantages of 33-inch tires:
• Minimal impact on fuel economy
• Little to no gearing changes required
• Comfortable daily driving
• Improved off-road capability compared to stock tires
Many trucks such as the Ford F-150, Toyota Tacoma, Chevy Silverado, and Ram 1500 can run 33s with very few modifications.
However, for enthusiasts chasing a more commanding stance, 35s are usually the next step.
35-Inch Tires: The Most Popular Lifted Truck Size
35-inch tires are widely considered the sweet spot in lifted truck builds. They deliver the aggressive look most people associate with lifted trucks while remaining practical for daily driving.
Running 35s typically requires:
• 4–6 inch suspension lift
• proper wheel offset
• upgraded shocks or coilovers
• potentially minor trimming depending on vehicle
Advantages of 35-inch tires:
• Major visual upgrade
• Improved ground clearance
• Strong off-road performance
• Still manageable for daily driving
Most modern half-ton trucks handle 35s well when the lift kit and wheel offset are properly engineered.
For many enthusiasts, 35s represent the ideal balance of form and function.
37-Inch Tires: Entering Serious Off-Road Territory
Once a truck moves to 37-inch tires, the build enters a more advanced category.
37s dramatically improve off-road capability by increasing:
• ground clearance
• obstacle approach capability
• traction in sand, mud, and rocks
However, larger tires introduce significant mechanical changes that must be addressed.
Typical requirements for running 37s include:
• 6–8 inch suspension lift
• upgraded steering components
• reinforced suspension geometry
• proper wheel backspacing
• fender trimming or larger wheel wells
More importantly, gear ratios and drivetrain strength become critical considerations.
Critical Technical Considerations for 37-Inch Tires and Larger
Running 37-inch tires without addressing supporting components can lead to poor performance or premature wear.
Important upgrades often include:
Differential Regearing
Larger tires effectively reduce torque multiplication from the engine. Regearing restores lost power and drivability.
Common gear ratios for 37s:
• 4.56
• 4.88
• 5.13 (for heavier builds)
Regearing improves:
• acceleration
• transmission longevity
• towing capability
Heavy-Duty Steering Components
Large tires place tremendous stress on steering systems. Many 37-inch builds benefit from:
• upgraded tie rods
• reinforced steering knuckles
• heavy-duty drag links
These upgrades prevent steering play and improve control.
Upgraded Brakes
The additional rotating mass of larger tires increases stopping distance.
Brake upgrades may include:
• larger rotors
• performance brake pads
• upgraded calipers
This becomes especially important for full-size trucks running heavy wheel and tire combinations.
Axle Strength
Half-ton axles can struggle under extreme loads created by large tires and aggressive off-road driving.
For serious off-road builds, upgrades may include:
• stronger axle shafts
• upgraded differential carriers
• locking differentials
Driveshaft Angles
Large lifts change drivetrain geometry. This can require:
• upgraded driveshafts
• carrier bearing adjustments
• differential drop brackets
Addressing driveline angles prevents vibration and premature wear.
40-Inch Tires: Extreme Builds Only
40-inch tires deliver incredible visual presence and off-road capability, but they require significant engineering and investment.
Most trucks running 40s need:
• 8–12 inch suspension lift
• heavily reinforced axles
• upgraded steering systems
• extensive trimming or aftermarket fenders
• significant drivetrain upgrades
These builds are often designed for:
• rock crawling
• overlanding
• show builds
• extreme off-road performance
While 40s look incredible, they are typically not ideal for daily driving unless the entire vehicle has been engineered around them.
Wheel Offset and Fitment
Wheel offset and backspacing determine how the tires sit within the wheel well.
Improper offset can cause:
• rubbing during turns
• suspension interference
• premature bearing wear
Proper wheel selection ensures the tire clears suspension components while maintaining stable handling characteristics.
Unsprung Weight and Rotational Mass
As tire size increases, the weight of each wheel and tire combination rises significantly.
Heavy wheel and tire setups affect:
• braking performance
• acceleration
• suspension response
High-quality lightweight wheels can help reduce unsprung weight and improve overall vehicle performance.
Speedometer Calibration
Larger tires change how far the vehicle travels per wheel rotation.
Without recalibration:
• speedometer readings become inaccurate
• transmission shift points may be affected
Many lifted trucks require electronic calibration tools to correct this.
Fuel Economy Considerations
Larger tires increase rolling resistance and aerodynamic drag. Fuel economy typically decreases as tire size increases.
However, proper gearing and efficient suspension setups can minimize these losses.
Choosing the Right Tire Size for Your Build
The best tire size depends on your priorities.
Drivers who want:
Daily drivability and mild off-road capability often choose 33-inch tires.
Those wanting the classic lifted truck look usually run 35-inch tires.
Serious off-road enthusiasts frequently step up to 37-inch tires.
Extreme builds or show trucks sometimes go all the way to 40-inch tires.
The key is ensuring that the suspension system, drivetrain, and steering components are engineered to support the tire size safely.
Why Professional Builds Matter
One of the most common mistakes people make when modifying trucks is focusing only on lift height and tire size while ignoring the supporting mechanical upgrades required.
Poorly designed builds can lead to:
• unsafe steering characteristics
• premature drivetrain failure
• excessive tire wear
• poor ride quality
Professionally built trucks address every aspect of the system, ensuring the vehicle performs as well as it looks.
Experience the Difference With Lifted Trucks
At Lifted Trucks, our team specializes in building trucks that combine aggressive styling with engineering integrity. Every build is designed with careful attention to suspension geometry, wheel fitment, drivetrain strength, and long-term reliability.
Whether you're looking for a daily driver on 35s or a serious off-road machine running 37s or larger, our inventory includes professionally built trucks ready for adventure.
If you're ready to upgrade your ride, explore our nationwide selection and find the lifted truck that perfectly matches your lifestyle and performance goals.
