You love your 2017 Jeep Wrangler. Maybe it’s your daily driver, your weekend trail warrior, or both. But whether you’re chasing better fuel economy, a more aggressive stance, or serious off-road capability, one of the biggest decisions you’ll make is about your tires. Getting the **2017 jeep wrangler tire size** right is crucial for performance, safety, and preventing costly headaches down the road.
We know the feeling. Staring at endless options, wondering what fits, what rubs, and what truly works. That’s why we’re here. This comprehensive guide from FatBoysOffroad will walk you through everything you need to know about selecting, upgrading, and caring for your 2017 Jeep Wrangler’s tires. We’ll cover stock sizes, popular upgrades, off-road considerations, and essential maintenance, ensuring you make informed choices for your rig.
Understanding Your Stock 2017 Jeep Wrangler Tire Size and Why It Matters
Before you dream of massive mud-slingers, it’s essential to understand your starting point. Your Jeep’s factory tire size is engineered to work perfectly with its stock suspension, gearing, and braking system. Deviating too much without proper adjustments can lead to issues.
Factory Specs for Your 2017 Jeep Wrangler
The 2017 Jeep Wrangler (JK generation) came with a few different stock tire sizes, depending on the trim level (Sport, Sahara, Rubicon).
- Sport/Sahara: Typically came with P255/75R17 tires. This translates to roughly a 32-inch diameter tire.
- Rubicon: Often equipped with LT255/75R17 tires, which are also about 32 inches in diameter but are generally a stronger, C-load or E-load rated tire designed for more rugged use. Some Rubicons also came with LT265/70R17 or LT285/70R17, which are slightly wider and can be closer to 32.6 inches.
Knowing these numbers is your baseline for any modifications.
Reading Your Tire Sidewall Like a Pro
Every tire has a series of numbers and letters on its sidewall – this is its unique fingerprint. Understanding it is key to selecting the right **2017 jeep wrangler tire size**.
Let’s break down P255/75R17:
- P: Indicates “P-metric” passenger car tire. LT (Light Truck) signifies a heavier-duty tire.
- 255: The tire’s width in millimeters, from sidewall to sidewall.
- 75: The aspect ratio. This is the sidewall height as a percentage of the tire’s width (75% of 255mm).
- R: Radial construction (the most common type).
- 17: The diameter of the wheel in inches that the tire is designed to fit.
This quick read allows you to compare potential new tires with your current setup instantly.
Beyond Stock: Common 2017 Jeep Wrangler Tire Size Upgrades for Daily Drivers
Many Jeep owners want to improve their Wrangler’s aesthetics or add a touch more capability without going full-blown off-road beast. There are several common **2017 jeep wrangler tire size** upgrades that are perfect for daily driving with occasional trail use.
The Sweet Spot: 33-inch Tires
Upgrading to 33-inch tires is arguably the most popular choice for JK Wranglers. They offer a noticeable increase in ground clearance and a more aggressive look without requiring extensive modifications.
- What fits: Many 33-inch tires (e.g., 285/70R17, 295/70R17, 305/70R17) can fit with a mild 1.5-2.5 inch suspension lift.
- Benefits: Improved off-road capability, better aesthetics, minimal impact on daily driving comfort and fuel economy compared to larger tires.
- Considerations: You might need wheel spacers or aftermarket wheels with appropriate backspacing to prevent rubbing at full turn or during suspension compression. A simple re-calibration of your speedometer with a tool like a ProCal is also recommended for accurate speed and mileage readings.
Stepping Up: 35-inch Tires
For those who want a more substantial boost in ground clearance and a truly commanding presence, 35-inch tires are the next step. This is where things start to get a bit more involved.
- What fits: To properly fit 35-inch tires (e.g., 315/70R17, 35×12.50R17), you’ll almost certainly need a 2.5-3.5 inch suspension lift.
- Benefits: Significantly enhanced off-road performance, especially over obstacles and in deeper ruts.
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Considerations:
- Gearing: Your stock gearing (especially on non-Rubicon models) might feel sluggish with 35s. Re-gearing to 4.10, 4.56, or 4.88 is often recommended for optimal power and fuel efficiency.
- Fenders: Flat fenders or fender trimming might be necessary to prevent rubbing during aggressive articulation.
- Steering Components: Larger tires put more stress on steering components. Upgraded tie rods and drag links might be a smart investment.
- Spare Tire: A 35-inch spare will likely require an aftermarket spare tire carrier to prevent damage to your tailgate.
Dominating the Trail: Off-Road Tire Sizes and Considerations
When your primary goal is conquering challenging terrain, your **2017 jeep wrangler tire size** choices become even more critical. Here, performance and durability often outweigh daily driving comfort.
When Bigger Really Is Better: 37-inch Tires and Beyond
For serious off-road enthusiasts, 37-inch tires are the holy grail. They offer maximum ground clearance and obstacle-crushing ability. However, this level of upgrade is not for the faint of heart or light of wallet.
- What fits: Expect to need a 3.5-4.5+ inch lift kit, flat fenders, and potentially even more extensive modifications like high-clearance fenders or trimming.
- Benefits: Unmatched off-road capability, especially in rock crawling and deep mud.
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Considerations:
- Gearing: Re-gearing is absolutely essential. We’re talking 4.88, 5.13, or even 5.38 ratios for proper performance.
- Axle Strength: Stock axles (especially the front Dana 30 on Sport/Sahara) are often not strong enough for 37s and aggressive off-roading. Axle upgrades (e.g., strengthening, swapping to Dana 44s or 60s) are highly recommended.
- Brakes: Larger tires increase rotational mass, making stock brakes less effective. Upgraded brake kits are a common and wise investment.
- Steering: Heavy-duty steering components (tie rod, drag link, steering box) are a must.
- Driveshafts: Larger lifts and tire sizes can put stress on driveshaft angles, often requiring aftermarket driveshafts.
Mud-Terrains vs. All-Terrains: Choosing Your Tread
Beyond size, the tread pattern dictates your tire’s performance in different conditions.
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All-Terrain (A/T) Tires:
- Best for: Daily driving, light to moderate off-roading, snow, sand, and gravel.
- Characteristics: Tighter tread blocks, quieter on the road, good compromise between on-road comfort and off-road grip.
- Pros: Versatile, longer tread life, better fuel economy than MTs.
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Mud-Terrain (M/T) Tires:
- Best for: Heavy off-roading, mud, rocks, deep snow.
- Characteristics: Large, widely spaced tread blocks, aggressive sidewall lugs.
- Pros: Excellent traction in extreme conditions, self-cleaning in mud.
- Cons: Noisier on pavement, shorter tread life, less fuel-efficient, less grip on wet pavement.
Consider your primary use case carefully. For most weekend warriors, a good A/T tire offers a fantastic balance.
The Nitty-Gritty: Lift Kits, Backspacing, and Fenders
Simply bolting on bigger tires rarely works without other modifications. Understanding these elements is crucial for any **2017 jeep wrangler tire size** upgrade.
Why Lift Kits are Essential
A lift kit increases the distance between your Jeep’s frame and its axles, providing more clearance for larger tires to articulate without rubbing on the fenders or other suspension components.
- Spacer Lifts: Inexpensive, simple to install, but don’t change ride quality. Good for mild 33-inch tire upgrades.
- Suspension Lifts: Replace springs and shocks, offering improved ride quality and off-road performance. Essential for 35-inch tires and larger.
Always factor in the cost of a quality lift when planning your tire upgrade.
Backspacing and Wheel Spacers
Backspacing
is the distance from the mounting surface of the wheel to the wheel’s rear edge. It dictates how far the wheel and tire stick out or tuck in.
- Why it matters: Stock JK wheels typically have 6.25 inches of backspacing. To fit wider tires (like 12.5 inches wide) without rubbing the frame or suspension components at full turn, you’ll need less backspacing (e.g., 4.5-5.2 inches).
- Aftermarket Wheels: Many aftermarket wheels designed for Jeeps come with ideal backspacing.
- Wheel Spacers: If you keep your stock wheels, quality wheel spacers (e.g., 1.5-inch) can effectively reduce your backspacing, pushing the wheels out and preventing rubbing. Always choose hub-centric spacers from reputable brands like Spidertrax or G2.
Fender Flares: Clearing the Way
Stock fender flares can limit tire clearance, especially during suspension articulation.
- Flat Fenders: These provide a higher, flatter profile, opening up the wheel well for more clearance. They are a common upgrade when running 35-inch tires or larger, especially if you want to keep your lift moderate.
- Fender Trimming: A more budget-friendly (and permanent) option is to trim your existing fenders. This requires careful measurement and cutting.
Remember, the goal is to prevent rubbing not just when stationary, but through the full range of your suspension’s travel.
Maintaining Your Rubber: 2017 Jeep Wrangler Tire Size Care Guide
Once you’ve invested in the perfect **2017 jeep wrangler tire size** for your needs, proper maintenance is crucial to maximize their lifespan, ensure safety, and maintain performance. This is where sustainable and eco-friendly practices come into play, reducing waste and improving efficiency.
The Golden Rule: Tire Pressure
Correct tire pressure is paramount. It affects handling, fuel economy, tire wear, and safety.
- Check Regularly: Use a reliable tire gauge to check your pressure at least once a month, and always before long trips or off-road excursions. Check when tires are cold.
- Manufacturer Specs: Your door jamb sticker provides the factory recommended pressure. However, for aftermarket tires, especially larger ones, you might need to adjust. Consult your tire manufacturer’s recommendations or perform a “chalk test” to find the optimal pressure for even wear.
- Off-Roading (Airing Down): For off-road traction and a smoother ride, you’ll “air down” your tires. This increases the tire’s footprint. Remember to re-inflate to street pressure immediately after hitting pavement.
Rotation and Balancing: Extending Tire Life
Regular rotation and balancing prevent uneven wear and ensure a smooth ride.
- Rotation: Rotate your tires every 5,000-7,000 miles. This ensures even wear across all four tires. For Jeeps with a full-size spare, include the spare in your rotation pattern for maximum longevity.
- Balancing: Have your tires balanced whenever new tires are installed, after a rotation if you notice vibrations, or if you lose a wheel weight. Unbalanced tires cause vibrations, premature wear, and stress on suspension components.
Inspection: Your Eyes are Your Best Tool
Make tire inspection a regular part of your routine.
- Tread Depth: Use a tread depth gauge or the “penny test” to monitor wear. Replace tires when tread depth reaches 2/32nds of an inch.
- Sidewall Damage: Look for cuts, cracks, bulges, or punctures. These can compromise tire integrity and lead to blowouts.
- Irregular Wear: Uneven wear patterns can indicate underlying issues like incorrect alignment, improper tire pressure, or worn suspension components. Address these promptly.
Proper tire care isn’t just about saving money; it’s about staying safe on and off the road.
Installation and Safety Best Practices
Whether you’re a seasoned DIYer or hiring a shop, understanding the best practices for installing your new **2017 jeep wrangler tire size** is critical for safety and optimal performance. These are the **2017 jeep wrangler tire size best practices**.
DIY Installation Tips (If You’re Feeling Brave)
While mounting and balancing tires requires specialized equipment, swapping wheels and tires on your Jeep is a common DIY task.
- Gather Your Tools: You’ll need a reliable floor jack, at least two sturdy jack stands, a lug wrench (or impact gun with appropriate socket), a torque wrench, and wheel chocks.
- Safety First: Park on a flat, level surface. Engage the parking brake. Chock the wheels opposite to the one you’re removing. Always use jack stands – never rely solely on a jack.
- Loosen Lug Nuts: Before lifting, slightly loosen the lug nuts on the wheel you’re removing.
- Lift and Support: Lift the Jeep using appropriate jack points (usually on the frame or axle tube). Place jack stands securely under the axle or frame.
- Remove and Install: Fully remove lug nuts and the old wheel. Carefully mount the new wheel, ensuring it sits flush on the hub. Hand-tighten lug nuts.
- Lower and Torque: Lower the Jeep until the tire just touches the ground. Torque the lug nuts in a star pattern to the manufacturer’s specified torque (check your owner’s manual). Fully lower the Jeep.
- Double Check: Re-check lug nut torque after about 50-100 miles of driving.
Common Problems and How to Avoid Them
Ignoring these can lead to **common problems with 2017 jeep wrangler tire size** upgrades.
- Rubbing: The most frequent issue. Usually caused by insufficient lift, improper backspacing, or lack of fender clearance. Carefully measure before you buy!
- Speedometer Inaccuracy: Larger tires make your speedometer read low. Recalibrate your computer using a device like a AEV ProCal Module or a dealership reflash.
- Reduced Braking Performance: Heavier, larger tires increase stopping distances. Consider upgrading to larger rotors and calipers, especially with 35-inch tires and up.
- Drivetrain Strain: Larger tires put more stress on your axles, driveshafts, and differentials. If you plan on aggressive off-roading, reinforce or upgrade these components proactively.
- Death Wobble: While not directly caused by tire size, larger tires can exacerbate underlying steering and suspension issues, leading to this dangerous phenomenon. Ensure all steering and suspension components are tight and in good condition.
When in doubt, or if you encounter issues you’re not comfortable tackling, don’t hesitate to call a licensed professional. Your safety and your Jeep’s longevity are worth it.
Frequently Asked Questions About 2017 Jeep Wrangler Tire Size
What is the biggest tire size I can put on a stock 2017 Jeep Wrangler?
Generally, you can fit up to a 32-inch tire (like a 255/75R17) on a stock 2017 Jeep Wrangler without rubbing. Some owners report fitting a 285/70R17 (about 32.7 inches) with minor rubbing at full turn or articulation, but this is not guaranteed.
Do I need to re-gear my Jeep for larger tires?
For 33-inch tires, re-gearing isn’t always strictly necessary, especially if you have a Rubicon or a manual transmission. However, for 35-inch tires and definitely for 37-inch tires, re-gearing is highly recommended to restore power, improve fuel economy, and reduce strain on your drivetrain. Consult a gearing chart based on your tire size and engine.
Will larger tires affect my fuel economy?
Yes, significantly. Larger, heavier tires increase rolling resistance and unsprung weight, leading to a noticeable drop in fuel efficiency. This is compounded if you don’t re-gear to compensate for the larger diameter.
How do I know if my wheels have the right backspacing?
The ideal backspacing for most lifted JK Wranglers running 12.5-inch wide tires is typically between 4.5 and 5.2 inches. If your wheels have more backspacing than that (like the stock 6.25 inches), you may need wheel spacers to prevent the tire from rubbing on the frame or suspension components.
What is the “chalk test” for tire pressure?
The chalk test helps you find the optimal tire pressure for even tread wear, especially on aftermarket tires. Draw a thick chalk line across the width of your tire tread. Drive a short, straight distance. If the chalk wears evenly across the tread, your pressure is good. If it wears more in the middle, your pressure is too high. If it wears more on the edges, it’s too low.
Ready to Roll?
Choosing the right **2017 jeep wrangler tire size** is a journey, not a destination. It requires careful consideration of your driving habits, your budget, and your ultimate goals for your rig. From understanding your stock setup to dreaming of 37s, we’ve laid out the path to help you make informed decisions.
Remember, safety should always be your top priority. Don’t cut corners on essential components like lifts, gearing, or brake upgrades when going bigger. Measure twice, buy once, and don’t be afraid to ask for help from a professional when you’re outside your comfort zone.
Your Jeep Wrangler is an incredibly capable vehicle, and with the right tires, you’ll unlock its full potential, whether you’re navigating city streets or conquering the toughest trails. Stay safe, stay comfortable, and keep exploring!
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