2018 Jeep Grand Cherokee: Tire Size, Pressure, & Wheel Specs

Quick Answer

• OEM Tire Size: 245/70R17, 265/60R18, 265/50R20 (Varies by trim)
• Recommended Cold Tire Pressure (Door Placard): 33-36 PSI (Varies by trim and tire size)
• Bolt Pattern: 5x127 (5x5 inches)
• Wheel Size: 17x8, 18x8, 20x8 (Varies by trim)
• Load Index/Speed Rating: 108T, 110T, 107H (Varies by trim and tire size)
• Spare Tire Size: Full-size or compact spare (Varies by trim and options)
• TPMS Frequency: 433 MHz

Tire Sizes by Trim

Note: Some trims may have optional larger wheel and tire packages available.

Recommended Replacement Tires

When it's time for new tires, consider these popular and well-regarded options for your 2018 Jeep Grand Cherokee. Prices are approximate and can vary based on retailer, sales, and installation.

• Michelin Defender LTX M/S (Premium Tier - $200-$300 per tire): An excellent all-season tire known for its long tread life, comfortable ride, and strong wet and dry traction. Great for daily driving and light off-road use.
• Goodyear Wrangler All-Terrain Adventure with Kevlar (Mid-Range Tier - $180-$270 per tire): A versatile all-terrain tire offering a good balance of off-road capability and on-road manners. Features DuPont™ Kevlar® for added strength and durability.
• Pirelli Scorpion Verde All Season (Mid-Range Tier - $170-$260 per tire): A popular OEM choice for many Grand Cherokees, this tire provides a quiet ride, good handling, and all-season performance with a focus on fuel efficiency.
• Cooper Discoverer HTP (Value Tier - $150-$230 per tire): A solid all-season highway tire offering good performance and a comfortable ride at a more accessible price point.

When to Inflate to Max Load PSI

For a 2018 Jeep Grand Cherokee, you generally do not need to inflate your tires to the "max load PSI" listed on the tire's sidewall. The "max load PSI" is the maximum pressure the tire can safely hold to carry its maximum load, and it's often much higher than what's recommended for daily driving.

Always refer to the tire pressure placard located on the driver's side door jamb for the recommended cold tire inflation pressures for your specific vehicle and tire size. These pressures are carefully chosen by Jeep to provide the best balance of ride comfort, handling, fuel economy, and tire life for normal driving conditions. Over-inflating your tires can lead to a harsher ride, premature tire wear (especially in the center of the tread), and potentially reduced traction.

Lug Nut Torque & Pattern

Proper lug nut torque is crucial for wheel safety. Always use a torque wrench to ensure lug nuts are tightened to the manufacturer's specifications.

• Lug Nut Torque: 100-110 ft-lbs (135-149 Nm)
• Bolt Pattern: 5x127 (This means 5 lug nuts on a 127mm bolt circle diameter, also commonly referred to as 5x5 inches)

When tightening lug nuts, always follow a star pattern (or cross pattern) to ensure even clamping force across the wheel hub. This prevents warping of the brake rotors and ensures the wheel is properly seated.

Common Tire Issues for this Vehicle

Owners of the 2018 Jeep Grand Cherokee generally experience typical tire wear characteristics, but some common issues or considerations include:

• Uneven Wear: Misalignment, worn suspension components, or improper tire inflation can lead to uneven tire wear. Regular alignments and tire rotations are key to maximizing tire life.
• Tire Noise: As tires wear, they can become louder. All-terrain tires, especially aggressive ones, can also produce more road noise than highway-oriented tires. Proper inflation helps maintain a quieter ride.
• TPMS Sensor Issues: The TPMS (Tire Pressure Monitoring System) sensors in your Grand Cherokee operate at 433 MHz. Battery life is typically 7-10 years, and sensors may need replacement if they fail to function or report incorrect pressures. They can also be damaged during tire mounting if not handled carefully.
• Pothole Damage: Given the popularity of the Grand Cherokee in various driving environments, potholes can be a concern, especially with lower-profile tires on 20-inch wheels. Pothole impacts can cause bubbles in the tire sidewall, bent rims, or even alignment issues.

Need new tires? Find a trusted shop on Repairius.