Why Lift Your Frontier and Fit Bigger Tires?

Equipping your Nissan Frontier with a suspension lift and oversized tires transforms it from a capable mid-size truck into a serious off-road machine. Larger tires increase ground clearance, improve approach and departure angles, and allow you to roll over obstacles that would stop a stock truck. However, fitting 33-, 35-, or 37-inch tires requires more than just a lift kit. Proper planning ensures your Frontier performs reliably on the trail without sacrificing safety or drivability. This guide breaks down the specific pros, cons, and requirements for each tire size, so you can make an informed decision for your build.

Understanding Lift Kits for the Frontier

A lift kit raises the chassis relative to the axles, creating space for larger tires. Lift height is measured in inches (2, 4, 6 or more) and directly affects what tire size you can run without rubbing. There are two primary types of lift kits for the Frontier:

  • Spacer lifts (leveling kits): These use spacers above the strut or coil spring to raise the front. They are affordable and easy to install but don’t change suspension geometry. Best for 33-inch tires on a budget.
  • Suspension lifts: These replace control arms, add drop brackets, and often include new coilovers or leaf springs. They maintain proper alignment and articulation, making them necessary for 35-inch and larger tires.

No matter which kit you choose, remember that lift height alone does not guarantee tire clearance. Wheel offset, backspacing, and trimming also play critical roles.

Tire Size Breakdown: 33, 35, and 37 Inches

33-Inch Tires – The Sweet Spot for Daily Driving

33-inch tires (approximately 285/70R17 or 255/80R17) are the most popular choice for lifted Frontiers. They offer a noticeable improvement in off-road capability without overwhelming the drivetrain or requiring extensive modifications.

  • Pros: Excellent balance of on-road comfort, off-road traction, and fuel economy. Fit easily with a 2–3 inch lift and minimal trimming. Do not require re-gearing for most driving.
  • Cons: Less ground clearance than 35s or 37s; may still rub at full articulation on stock wheels if backspacing is not adjusted.
  • Recommended lift: 2 to 3 inches (spacer or basic suspension lift).

For most weekend trail riders, 33-inch tires provide the best all-around setup. They clear most forest service roads, rocky trails, and moderate obstacles while keeping the truck stable on pavement.

35-Inch Tires – Serious Off-Road Performance

35-inch tires (e.g., 315/70R17 or 295/70R18) mark the point where your Frontier becomes a dedicated off-road machine. These tires drastically improve ground clearance (up to 12 inches under the axle) and allow you to tackle larger rocks, ruts, and steep inclines.

  • Pros: Dramatically better approach, breakover, and departure angles. More traction in loose terrain. Looks aggressive and functional.
  • Cons: Noticeable loss of fuel economy (2–4 mpg). Increased strain on the transmission, differential, and brakes. Almost always require re-gearing (4.10 or 4.56 recommended for the Frontier).
  • Recommended lift: 4 inches (suspension lift with new upper control arms and extended shocks).

With 35s, expect to invest in stronger tie rods, upgraded bump stops, and possibly a front differential drop kit to prevent CV axle binding. Wheel backspacing of 4.5 inches or less is critical to avoid rubbing the frame at full lock.

37-Inch Tires – Extreme Trail Domination

37-inch tires (e.g., 37x12.50R17) push the Frontier to its limits. They provide maximum ground clearance and allow you to straddle large obstacles, but they come with significant compromises in daily drivability.

  • Pros: Unmatched clearance for deep ruts, boulders, and logging trails. Superior float in sand and snow. Turn heads wherever you go.
  • Cons: Severe fuel economy reduction (25–30% decrease). Requires major modifications: 6-inch lift, aftermarket bumpers, fender trimming, re-gearing to 4.88 or 5.13, and likely a transfer case drop. Steering and braking systems need upgrades (hydro assist, bigger rotors, etc.).
  • Recommended lift: 6 inches or more (full long-travel suspension or solid axle swap recommended for reliability).

37s are not for the faint of heart. They demand extensive drivetrain reinforcement, and even then, the Frontier’s factory axles may struggle. Most owners who run 37s do so on dedicated trail rigs with aftermarket Dana axles or a swapped solid front axle.

Critical Fitment Factors for Your Lifted Frontier

Choosing the right tire size is only part of the equation. These mechanical factors determine whether your new tires clear the fenders, frame, and suspension components.

Wheel Offset and Backspacing

Wheel offset (measured in millimeters) and backspacing (measured in inches) dictate how far the tire sits from the hub and suspension. For a boosted Frontier:

  • Positive offset stock wheels (e.g., +30mm): Push the tire inward, causing rubbing on the upper control arm and frame at full lock when running 35s or 37s.
  • Aftermarket wheels with -12 to -25mm offset: Push the tire outward, improving clearance for larger tires but increasing fender coverage requirements and steering effort.
  • Ideal backspacing: 4.0–4.5 inches for 33s; 3.5–4.0 inches for 35s; 3.0–3.5 inches for 37s. Always test fit before committing.

Fender Trimming and Clearance

Even with a lift, most Frontiers require trimming of the front bumper lower valance, rear fender pinch weld, and possibly the inner fender liners. For 35s and above, you’ll need to:

  • Cut the plastic bumper end caps to match the new tire envelope.
  • Remove or modify the front mud flaps.
  • Hammer back the pinch weld inside the front wheel wells.
  • For 37s, plan on cutting and welding new metal fenders or installing aftermarket fiberglass fender flares.

Suspension Component Clearance

Larger tires can contact sway bar links, lower control arms, and the steering rack. Upgrading to adjustable upper control arms (UCAs) is essential for 35-inch and larger tires to restore proper caster and camber angles after a lift. Additionally, install extended bump stops to prevent the tire from smashing into the inner fender at full compression.

Re-gearing and Drivetrain Considerations

When you increase tire diameter, the effective gear ratio becomes taller, making the engine work harder to maintain speed and reducing torque to the wheels. This is why 35- and 37-inch tires almost always require re-gearing.

  • 33-inch tires: Stock gearing (3.36 or 3.56) is acceptable for highway driving, but 33s still benefit from a re-gear to 4.10 for better low-end power.
  • 35-inch tires: Strongly recommend 4.56 for automatic transmissions and 4.56 or 4.88 for manuals. This restores acceleration and allows proper use of overdrive gears.
  • 37-inch tires: Minimum 4.88; many owners go to 5.13 or 5.38 to keep the engine in its power band. Expect to upgrade axle shafts and differential bearings.

Nissan Off-Road provides detailed gear ratio calculators specific to the Frontier.

Choosing the right kit saves you headaches later. Here are proven setups based on thousands of owner builds:

33-Inch Tires – 2 to 3 Inch Lift

  • Spacer lift: Rough Country, ReadyLift, or Supreme Suspensions 2-inch spacer leveling kit. Low cost, easy install.
  • Budget suspension lift: Bilstein 5100 adjustable shocks set to 2 inches with aftermarket UCAs (SPC or Total Chaos).
  • Complete suspension: Old Man Emu (OME) 2-inch lift with rear leaf packs and front struts.

35-Inch Tires – 4 Inch Lift

  • Popular mid-range: Rough Country 4-inch suspension lift with drop brackets and extended travel shocks.
  • Premium option: Icon Vehicle Dynamics or King coilovers with UCA and rear leaf springs. Allows fine-tuning of ride height and damping.
  • Budget alternative: RC 3-inch lift with body lift combination (total ~4 inches) but requires more trimming.

37-Inch Tires – 6 Inch Lift (or More)

  • Full bolt-on: Rough Country 6-inch lift with drop brackets, pitman arm, and steering stabilizer.
  • High-end long travel: Total Chaos + LSK long travel kit paired with 2.5 coilovers and bypass shocks. Requires fabrication skills.
  • Solid axle swap (SAS): The ultimate setup for 37s and larger. Replaces independent front suspension with a Dana 44 or 60 axle. Expensive but bulletproof.

Installation Tips for a Reliable Build

Even the best parts fail if installed incorrectly. Follow these guidelines to ensure your Frontier stays safe and performs as intended:

  • Professional installation recommended for 4-inch+ lifts due to complex geometry changes. DIYers should have a press, torque wrench, and spring compressor.
  • Always perform a full alignment after lifting. Factory specifications are no longer valid; ask your shop to set caster to +3.0 to +4.0 degrees for stability with larger tires.
  • Replace all worn components before the lift: ball joints, tie rod ends, and sway bar bushings. Larger tires amplify any looseness.
  • Torque all hardware to spec and re-check after 500 miles. Use threadlocker on critical fasteners like UCA bolts.
  • Install brake line relocation brackets to prevent stretching at full droop.
  • Consider a steering stabilizer for 35s and 37s to reduce bump steer and wheel wobble.

Maintenance and Safety After the Lift

Larger tires and a lifted suspension increase wear rates on several components. Make these part of your regular inspection routine:

  • Tire rotations every 5,000 miles – heavy tires wear faster, and aggressive tread patterns can cause uneven wear.
  • Check CV axle boots regularly – lifts increase their operating angle, leading to premature boot tearing and grease loss.
  • Monitor gear oil temperature – re-geared differentials with 35s or 37s generate more heat; consider synthetic gear oil and magnetic drain plugs.
  • Inspect bump stops after every major off-road trip – they should show signs of contact; if missing or torn, replace immediately to avoid metal-on-metal contact.
  • Test brakes – larger tires increase stopping distance. Upgrade to performance pads and consider a master cylinder brace if you notice a soft pedal.

Conclusion

Choosing between 33-, 35-, and 37-inch tires for your lifted Frontier depends on your intended use, budget, and willingness to modify the drivetrain. Start with a clear goal: 33s are perfect for a capable daily driver, 35s turn your truck into a serious off-road weapon, and 37s are for extreme enthusiasts who expect to rebuild axles and gears as routine maintenance. Measure twice, install once, and always prioritize safety over looks. With the right lift kit, wheel offset, and supporting mods, your Frontier will conquer trails you never thought possible.

For additional resources, visit Club Frontier for build threads and Nissan Parts Zone for OEM components to complete your project.