Why Upgrade to 35-Inch Tires?

Fitting 35-inch tires to your Jeep Wrangler is one of the most effective upgrades for serious off-road capability. The extra ground clearance, improved approach and departure angles, and larger footprint on rocks and mud make a dramatic difference. However, a proper installation requires more than just swapping rubber. You need to plan for suspension clearance, steering stops, drivetrain stress, and safety. This guide walks you through everything from selecting the right tire and wheel combination to final torque checks and a post-install break-in drive.

Before you begin, confirm your Jeep model year and trim. Wrangler TJ, JK, and JL generations have different factory suspension heights and steering geometries, which affects the amount of lift needed and the risk of rubbing. For most builds, a 2.5-inch to 4-inch lift is recommended, but we’ll cover clearance checks in detail later. If you are unsure about suspension requirements, consult a specialist or refer to your vehicle’s service manual.

Tools and Materials Needed

Having the right tools on hand prevents delays and ensures a safe lift. Gather the following before you start:

  • 35-inch tires (five total, including the spare)
  • 17- or 18-inch wheels with correct backspacing (4.5–5.0 inches recommended)
  • Floor jack rated for at least 3 tons
  • Two jack stands (3-ton capacity or higher)
  • Tire iron or impact wrench with deep sockets
  • Torque wrench (foot-pounds scale)
  • Wheel chocks
  • Socket set (standard metric ½-inch drive)
  • Brake cleaner and shop rags
  • Air compressor or nitrogen source for bead seating
  • Lug nuts compatible with your new wheels (conical seat or shank type)
  • Anti-seize compound for wheel studs (optional but recommended)
  • Torque-to-yield or standard lug nuts (check manufacturer spec)

If you are also installing a suspension lift, add spring compressors, control arms, sway bar links, and bump stops to your list. For this guide, we assume the vehicle already has the necessary lift or that you are performing a minimal clearance adjustment.

Preparation Steps

Preparation is the foundation of a safe tire installation. Follow these steps before lifting the vehicle:

  • Park the Jeep on a level, hard surface. Avoid grass or gravel where jack stands can sink.
  • Engage the parking brake firmly. On manual transmission Jeeps, leave it in gear (reverse for safety).
  • Place wheel chocks behind the rear tires (or front if you’re working on the rear). Never rely only on the parking brake.
  • Set the steering wheel straight ahead and lock it with a steering wheel lock if possible.
  • Clean the wheel hub surfaces with brake cleaner to remove any rust or debris. This ensures the new tire seats flat against the rotor, preventing vibrations.

If you are installing aftermarket wheels, test-fit them on the front hub before mounting the tires. Check that the wheel center bore clears the axle hub pilot. If the bore is too small, you may need to use a hub-centric ring or have the wheel machined. Most aftermarket wheels use a centering ring; ensure it is installed.

Remove the Existing Tires

Removing the factory tires is straightforward. Work one corner at a time to keep the vehicle stable.

  1. Using a tire iron or impact wrench, break the lug nuts loose while the Jeep is still on the ground. Do not completely remove them yet; just loosen each nut by a quarter turn.
  2. Position the floor jack under the vehicle’s frame rail or axle tube. Consult your owner’s manual for proper jacking points – typically the frame near the wheel or the axle housing itself. For a Wrangler, the rear axle is safe to jack under the differential housing, but place the jack stand under the axle tube.
  3. Lift the Jeep until the tire is about 2 inches off the ground. Place a jack stand under the frame or axle at a rated capacity point. Lower the Jeep slightly onto the stand to ensure it’s seated securely. Never work under a vehicle supported only by a jack.
  4. Remove the lug nuts completely and carefully pull the old tire off the wheel studs. If the tire is stuck, gently tap the back of the wheel with a rubber mallet.
  5. Inspect the brake rotor and caliper for any damage or excessive wear. This is a good time to replace brake pads if they are thin.

Repeat for all four corners. If you plan to reuse the factory spare tire carrier for the 35-inch spare, check the carrier’s weight rating. Many factory carriers are not designed for a 35-inch tire and may sag or crack. Consider a heavy-duty aftermarket carrier or a tailgate reinforcement bracket.

Install the New 35-Inch Tires and Wheels

With the old tires removed, install the new 35-inch tires onto the hubs. The wheel selection matters: a backspacing of 4.5 inches or less helps clear the frame and control arms during turning. If your backspacing is too high, the tire will rub on the lower control arm or sway bar. Use wheel spacers as a last resort, but ensure they are hub-centric and installed with thread locker.

  1. Clean the wheel hub mounting surface again with brake cleaner and a rag. Check for burrs or warped rotors.
  2. Align the new tire and wheel onto the wheel studs. For hub-centric wheels, the center bore should fit snugly over the axle pilot. For lug-centric designs, the lug nuts will center the wheel.
  3. Install the lug nuts by hand, tightening them evenly in a star pattern until they are snug. Do not use an impact wrench for final tightening — use a torque wrench.
  4. Lower the Jeep back to the ground (but keep it supported on the jack stands for the next steps).
  5. Using a torque wrench, tighten each lug nut in a star pattern to the manufacturer’s specification. For most Wranglers, this is between 100 and 130 ft-lbs. Check your owner’s manual or the wheel manufacturer’s spec. Over-tightening can warp rotors or snap studs.

Important: If you are installing aftermarket wheels with different lug seat types (conical vs. ball vs. shank), ensure the lug nuts match exactly. Using wrong seat style can cause the wheel to loosen.

Check for Clearance and Adjustments

After mounting all four tires, perform a thorough clearance check. Even with a lift, 35s can rub at full articulation or tight turns.

  • Static turning check: With the Jeep on level ground, turn the steering wheel fully left and right. Listen and feel for any contact between the tire and the sway bar, track bar, control arms, or frame. If you hear rubbing, you may need wheel spacers, bump stop extensions, or a different wheel offset.
  • Flex test: If you have access to a RTI ramp or a safe off-camber surface, articulate the suspension to maximum axle travel. Check if the tire hits the inner fender liner, lower control arm, or the body mount. For front articulation, the tire may also contact the front bumper or air dam.
  • Full compression test: With the Jeep on the ground, compress the suspension by pushing down on the bumper. Check that the tire does not hit the inner wheel well. If it does, you need additional bump stop extensions. A common rule is to increase bump stop length by 1 inch for every 2 inches of tire diameter increase beyond stock.

If you are installing the tires without a lift, you will likely need to trim the pinch seam in the front wheel well and possibly the rear wheel well plastic. Use a sharp knife or a cut-off tool. Remove only what is necessary to clear the tire under compression. After trimming, clean the edges and apply touch-up paint to prevent rust.

For extreme off-road use, consider relocating the ABS wheel speed sensor wiring if it is in danger of rubbing on the tire. Zip-tie the wiring out of the way.

Gearing and Drivetrain Considerations

While not a direct step in the tire installation, you must address the effect of larger tires on your gearing. A 35-inch tire significantly alters the effective gear ratio, making the engine feel sluggish and the transmission hunt for gears. If you notice severe power loss or the transmission overheating, a regear is essential:

  • For manual transmissions: 4.56 or 4.88 gears are typical for 35s.
  • For automatic transmissions (JK/JL): 4.56 is common; 4.88 for heavier builds or rock crawling.
  • For TJ with 4.0L: 4.56 works well; 4.88 for low-end torque.

Regearing must be done by an experienced technician with proper setup (including master install kits, solid pinion spacers, and proper backlash). If you postpone regearing, be aware that your speedometer will be off by about 10-15%. You can use a speedometer calibrator (e.g., Superchips Flashpaq or AEV ProCal) to correct it.

Alignment and Steering After Installation

Larger tires and potential lift will change your steering geometry. After installation, take the Jeep for a short test drive on a smooth road. Check for:

  • Wandering or loose steering: This may indicate insufficient caster angle. Many lifts push the caster out of spec. Add adjustable control arms or longer control arms to correct caster.
  • Uneven tire wear: After a few miles, inspect the tread for feathering or cupping. This suggests incorrect toe-in or excessive camber. A professional alignment is strongly recommended after any tire size change.
  • Death wobble tendency: If you experience violent shaking at highway speeds, check ball joints, track bar bolt torque, and steering stabilizer. Use a high-quality steering stabilizer (like Fox or Falcon) and ensure all front-end components are in good condition.

Schedule a mechanic alignment with a shop familiar with lifted Wranglers. They will adjust toe-in to specifications (usually 1/16” to 1/8” toe-in) and set caster between 4 and 6 degrees positive. Camber is typically not adjustable on beam-axle Wranglers, but aftermarket sleeves are available.

Final Steps and Post-Installation Routine

Once the tires are mounted and you’ve addressed clearance, alignment, and gearing, complete these final steps:

  • Torque check: After driving 25–50 miles, recheck the lug nut torque. New wheels and tires can seat and settle, causing nuts to loosen. Use the star pattern and apply the manufacturer’s torque. Recheck again at 100 miles.
  • Tire pressure: Set tire pressure to the vehicle manufacturer’s recommended PSI as a starting point. For 35-inch tires on a Wrangler, 32–35 psi cold is typical. Adjust based on the contact patch: chalk test the tread to ensure the full width contacts the road. Lower PSI for off-road use (15–20 psi for rocks, 12–15 psi for sand).
  • Spare tire mount: If you are mounting the spare on the tailgate, consider a reinforcement bracket to support the extra weight. Many factory hinges can bend over time with a 35-inch spare. Alternatively, use a heavy-duty tire carrier.
  • Test drive: Take the Jeep for a mix of highway and local roads. Listen for any rubbing, vibrations, or unusual noises. Do a full lock-to-lock turn in both directions in an empty parking lot. If all is quiet, your installation is successful.
  • Off-road check: If possible, take the Jeep on a gentle off-road trail to test flex and articulation before hitting difficult terrain. This helps identify any clearance issues at low speed.

Maintenance and Long-Term Considerations

Larger tires impose more stress on suspension components, steering, and drivetrain. Plan for more frequent inspections:

  • Check ball joints and tie rod ends every oil change.
  • Inspect wheel bearings for play — the added weight accelerates wear.
  • Rotate tires every 5,000 miles to even out wear. Use a five-tire rotation pattern if you have a matching spare.
  • Monitor brake wear: bigger tires increase stopping distances; upgrade to a big brake kit if you tow or carry heavy loads.
  • Keep an eye on transmission and differential temperatures if you drive aggressively off-road.

For further reading on gear ratios and lift clearance, check these resources:

Conclusion

Installing 35-inch tires on your Jeep Wrangler transforms both its appearance and off-road capability. The process goes beyond simply swapping rubber: it demands careful planning around suspension clearance, gearing, steering geometry, and safety. By following this step-by-step guide, you can avoid common pitfalls such as rubbing, vibration, and drivetrain strain. Always prioritize a professional alignment and a thorough post-installation check. With the right preparation, your Jeep will be ready to tackle trails that were previously off limits, all while maintaining safe handling and reliability on the street.