2015 Jeep Grand Cherokee Tire Size & Pressure Guide

As an ASE-certified master technician, I see a lot of 2015 Jeep Grand Cherokees roll through the shop. Whether you're commuting, towing a boat, or taking advantage of Jeep’s legendary off-road capability, having the right tires at the correct pressure is critical for safety, fuel economy, and handling.

Below is your comprehensive guide to the 2015 Jeep Grand Cherokee tire and wheel specifications.

Quick answer

Here are the essential tire and wheel specs for the 2015 Jeep Grand Cherokee:

• OEM tire size: 245/70R17 (Base Laredo), 265/60R18 (Limited), 265/50R20 (Overland/Summit), 295/45R20 (SRT)
• Recommended cold tire pressure: 33 PSI (front/rear for 17" wheels) to 36 PSI (front/rear for 18" and 20" wheels). Always check your driver's side door jamb placard to confirm your specific vehicle.
• Bolt pattern: 5x127 mm (5x5")
• Wheel size: 17x8.0, 18x8.0, 20x8.0 (SRT uses 20x10.0) with offsets generally around +56.4 mm (SRT is +50 mm)
• Load index/speed rating: 108T to 110T for standard trims; 110W for SRT
• Spare tire size: T245/65R18 (Compact spare) or full-size matching spare depending on the tow package
• TPMS frequency: 433 MHz

Tire sizes by trim

Jeep offered several trims for the 2015 Grand Cherokee, and wheel sizes vary significantly depending on the package.

Trim Level	Standard Tire Size	Optional/Upgrade Size	Standard Wheel Size
Laredo	245/70R17	265/60R18	17x8.0
Laredo E / Altitude	265/60R18	265/50R20	18x8.0 / 20x8.0
Limited	265/60R18	265/50R20	18x8.0
Overland / Summit	265/50R20	N/A	20x8.0
SRT	295/45R20	N/A	20x10.0

Recommended replacement tires

When it’s time to replace the tires on your 2015 Grand Cherokee, you want rubber that matches your driving habits. Here are a few top technician-recommended options:

• Premium Highway/All-Season: Michelin Defender LTX M/S – Exceptional tread life, quiet highway ride, and fantastic wet traction. Ideal for daily drivers.
• Mid-Tier All-Terrain: Falken Wildpeak A/T3W – If you venture off-road or deal with heavy snow, this tire provides an aggressive look and great traction without ruining on-road manners.
• Budget/Value Highway: Kumho Crugen HT51 – A solid, cost-effective all-season tire that delivers reliable performance and comfort for standard commuting.
• Performance (SRT Only): Pirelli P Zero (PZ4) – If you're driving the 475-horsepower SRT, you need maximum grip. This summer performance tire handles the heavy SUV's cornering and braking demands.

When to inflate to max load psi

Note: The Jeep Grand Cherokee is a mid-size SUV, not a Heavy-Duty (HD) truck (like a RAM 2500/3500).

For HD trucks, technicians often recommend inflating rear tires to the sidewall max (e.g., 80 PSI) when hauling max payload or heavy 5th-wheel trailers. However, for the Grand Cherokee, you should never inflate your tires to the maximum PSI listed on the tire sidewall for normal driving.

If you are towing a heavy trailer near the Grand Cherokee’s 7,400 lb max towing capacity, you can safely bump up the rear tire pressure by 2 to 3 PSI over the door placard recommendation (e.g., from 36 PSI to 39 PSI) to stiffen the sidewall and reduce sway. Never exceed the maximum pressure molded onto the tire sidewall (usually 44 to 51 PSI for standard load tires).

Lug nut torque & pattern

Proper wheel torque is critical to prevent warped brake rotors or a wheel-off scenario.

• Lug Nut Torque: 130 ft-lbs (176 Nm)
• Bolt Pattern: 5x127 mm (5x5")
• Socket Size: 22mm (or 7/8")

Always tighten lug nuts in a 5-lug "star" or "crisscross" pattern. Torque them by hand using a calibrated torque wrench, rather than relying solely on an impact gun. Re-torque the wheels after 50 to 100 miles of driving.

Common tire issues for this vehicle

1. Swollen Lug Nuts: Like many Chrysler/Jeep products of this era, the 2015 Grand Cherokee uses a two-piece lug nut design (a steel core with a cosmetic chrome cap). Moisture gets trapped between the layers, causing the cap to swell. Eventually, a standard 22mm socket won't fit. I highly recommend replacing the OEM lug nuts with solid one-piece aftermarket lug nuts.

2. Uneven Wear from Quadra-Lift Suspension: If your Grand Cherokee is equipped with the Quadra-Lift air suspension, alignment can be tricky. Failing to put the system into "Wheel Alignment Mode" before an alignment will result in inaccurate camber and toe settings, which will chew up the inner or outer edges of your tires prematurely.

3. Cupping from Worn Shocks: Heavy SUVs wear out their dampeners faster than lighter cars. If you notice a "cupping" or scalloped wear pattern on the outer edges of your tires, accompanied by a rhythmic road noise, have your shocks and struts inspected.

Need new tires? Find a trusted shop on Repairius.