The 2018 Jeep Trucks Grand Cherokee sits at an interesting point in the model’s history, blending everyday SUV comfort with trims that range from straightforward road use to performance and more rugged applications. That broad trim spread is exactly why tire selection matters on this vehicle. Depending on sub-model, the 2018 Jeep Trucks Grand Cherokee uses one of four primary radial sizes: 245/70R17, 265/60R18, 265/50R20, or 295/45R20. Some versions stay with a single setup, while others can use more than one size depending on wheel package. The right choice starts with confirming the exact sub-model and wheel diameter before comparing tread style, appearance, and intended road use.
Which Tire Size Is Right for The 2018 Jeep Trucks Grand Cherokee
The 2018 Jeep Trucks Grand Cherokee uses four primary tire sizes, and the correct one depends on the exact sub-model and wheel package. Because these fitments span 17-inch, 18-inch, and 20-inch rims, the first step is confirming both the trim and the wheel diameter currently on the vehicle before comparing tire choices within the correct size.
Fit(s): Altitude, High Altitude, High Altitude V8 4x4, Limited, Limited Sterling Edition, Limited Sterling Edition V8 4x4, Limited V8 4x4, Overland, Overland V8 4x4, Summit, and Summit V8 4x4
Construction: Radial|Rim: 20 in
265/50R20 is a modern metric radial size where 265 is the section width in millimeters, 50 is the aspect ratio, R identifies radial construction, and 20 is the wheel diameter in inches. On the 2018 Jeep Trucks Grand Cherokee, this size suits several upper-trim configurations that use 20-inch wheels. Its sizing format is familiar to modern SUV owners and centers the decision on matching the correct wheel setup rather than translating an older tire code. This is the size to evaluate when the vehicle already carries a 20-inch package and the sub-model calls for that fitment.
245/70R17 is a metric radial size with a 245-millimeter section width, a 70-series profile, radial construction, and a 17-inch rim diameter. On the 2018 Jeep Trucks Grand Cherokee, this size is tied to certain Laredo configurations using the smaller wheel package. BFGoodrich offers an All-Terrain T/A KO2 option in this fitment with raised white letter styling, giving buyers a more utility-oriented look and tread character. This size deserves close attention when maintaining a stock 17-inch wheel setup or selecting a tire for mixed street and light trail use.
Fit(s): Laredo E, Limited, Limited Sterling Edition V8 4x4, Limited V8 4x4, Overland, Overland V8 4x4, and Trailhawk
Construction: Radial|Rim: 18 in
265/60R18 follows the same modern metric radial format, with 265 millimeters of section width, a 60-series profile, radial construction, and an 18-inch wheel diameter. On the 2018 Jeep Trucks Grand Cherokee, it appears on several trims and in some cases alongside another available wheel-and-tire package for the same sub-model. That makes this size less about broad model-wide fitment and more about confirming the wheels actually installed on the vehicle. It is the right starting point for Grand Cherokees equipped with 18-inch rims, including trims that bridge everyday driving and more adventure-oriented use.
295/45R20 is a modern metric radial size using a 295-millimeter section width, a 45-series profile, radial construction, and a 20-inch rim. On the 2018 Jeep Trucks Grand Cherokee, this fitment belongs to the SRT and Trackhawk, separating it from the narrower 20-inch tire used on several other trims. The code signals a wider, lower-profile setup, so the key selection issue is not just wheel diameter but making sure the tire matches the performance-oriented configuration it was intended for. This size should be chosen only when the vehicle is one of those specific sub-models and retains the proper wheel setup.
Sub-model fitment matters on the 2018 Jeep Trucks Grand Cherokee because tire size changes across the lineup, and some trims can use more than one wheel-and-tire package. Before choosing a tire, confirm the exact trim and whether the vehicle is riding on 17-inch, 18-inch, or 20-inch wheels.
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2018 Jeep Trucks Grand Cherokee Altitude
The Altitude uses a 20-inch radial tire setup centered on 265/50R20. Tire selection here starts with maintaining the correct 20-inch fitment and then choosing a tire that suits the vehicle’s road use and overall appearance.
The High Altitude uses the 265/50R20 radial size on a 20-inch wheel package. That keeps the decision focused on staying within the correct metric size and confirming the current wheel setup before replacing tires.
2018 Jeep Trucks Grand Cherokee High Altitude V8 4x4
The High Altitude V8 4x4 also uses 265/50R20 radial tires. For this sub-model, the practical step is verifying that the vehicle still has its 20-inch wheel package before comparing replacement choices.
The Laredo uses the 245/70R17 radial size, which places it on a 17-inch wheel setup. Buyers replacing tires on this sub-model should stay focused on that rim diameter and decide whether a more road-oriented or more all-terrain style better matches use.
The Laredo E can use either 245/70R17 or 265/60R18 radial tires, depending on the wheel package. That makes wheel confirmation especially important before ordering, since the correct tire depends on whether the vehicle has 17-inch or 18-inch rims.
The Limited can be fitted with either 265/50R20 or 265/60R18 radial tires. Choosing correctly means checking the actual wheel diameter on the vehicle first, then narrowing the tire search to the matching metric size.
2018 Jeep Trucks Grand Cherokee Limited Sterling Edition
The Limited Sterling Edition uses the 265/50R20 radial size. Tire replacement is straightforward once the 20-inch wheel setup is confirmed, with the main task being selection within the proper size.
2018 Jeep Trucks Grand Cherokee Limited Sterling Edition V8 4x4
The Limited Sterling Edition V8 4x4 can use either 265/50R20 or 265/60R18. Because both 20-inch and 18-inch packages apply here, confirming the installed wheels is more important than relying on trim name alone.
The Limited V8 4x4 uses either 265/50R20 or 265/60R18 radial tires. Tire selection for this sub-model begins with the wheel diameter already on the vehicle, since both fitments are valid depending on configuration.
The Overland can be equipped with 265/50R20 or 265/60R18 radial tires. The right replacement choice depends on identifying which wheel package the vehicle currently has rather than assuming one size applies to every Overland.
The Overland V8 4x4 also uses either 265/50R20 or 265/60R18. For this trim, correct fitment starts with checking the installed wheel diameter and then selecting a tire within the matching size.
The SRT uses the wider 295/45R20 radial size. That makes it important to distinguish this sub-model from other 20-inch Grand Cherokees, since the wheel diameter matches but the tire size does not.
The Summit uses 265/50R20 radial tires on a 20-inch wheel package. Replacement choices should stay within that fitment unless the vehicle has been changed from its original wheel setup.
The Summit V8 4x4 uses the same 265/50R20 radial fitment as other 20-inch luxury-oriented trims. Tire selection is straightforward once the 20-inch wheels are confirmed and the intended use is clear.
The Trackhawk uses 295/45R20 radial tires, matching the performance-focused 20-inch setup used on that specific configuration. Buyers should confirm this wider fitment rather than assuming any 20-inch Grand Cherokee tire is appropriate.
The Trailhawk uses the 265/60R18 radial size. That puts the focus on preserving the correct 18-inch fitment and choosing a tire that suits how the vehicle is actually driven.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2018 Jeep Trucks Grand Cherokee Tires for Sale
Current product coverage centers on 245/70R17, where BFGoodrich offers the All-Terrain T/A KO2 in radial construction with raised white letter styling. That gives 17-inch Grand Cherokee owners a clear comparison point for rim-width compatibility, load specification, and all-terrain presentation.
Owners of a 2018 Jeep Trucks Grand Cherokee usually need to sort out trim-specific tire sizing first, then compare wheel diameter, tire style, and real-world use. The questions below focus on fitment, product selection, and practical road-use checks.
Tire Size & Fitment
What tire size fits a 2018 Jeep Trucks Grand Cherokee?
The 2018 Jeep Trucks Grand Cherokee uses four primary tire sizes: 245/70R17, 265/60R18, 265/50R20, and 295/45R20. All of these are radial sizes, but they do not apply across the lineup the same way, because different sub-models and wheel packages use different fitments.
The practical step is to confirm the exact sub-model and the wheel diameter currently on the vehicle before choosing a tire. A Laredo, Trailhawk, Summit, SRT, and Trackhawk do not all use the same setup, and some trims can use more than one size depending on wheel package.
What size rim does a 2018 Jeep Trucks Grand Cherokee use?
A 2018 Jeep Trucks Grand Cherokee can use 17-inch, 18-inch, or 20-inch rims, depending on the specific trim and tire size. The 245/70R17 size uses a 17-inch rim, 265/60R18 uses an 18-inch rim, and both 265/50R20 and 295/45R20 use 20-inch rims.
That makes wheel diameter the first fitment check before any tire purchase. Two Grand Cherokee trims may both wear 20-inch wheels yet still require different tire sizes, so rim diameter alone is not enough. Match the wheel size first, then confirm the exact tire size called for by the sub-model.
Why does the 2018 Jeep Trucks Grand Cherokee have more than one tire size?
The 2018 Jeep Trucks Grand Cherokee spans a wide range of trims, so tire size changes with the vehicle’s wheel package and intended role. Some versions use 17-inch or 18-inch setups, several luxury-oriented trims use 265/50R20, and the SRT and Trackhawk use the wider 295/45R20 fitment.
That variety means the correct tire is tied to configuration, not just model name. It is also why some trims such as the Limited, Overland, and Laredo E can appear with more than one valid size. Checking the installed wheels and the exact trim avoids choosing a tire meant for a different setup.
Choosing the Right Tire
What should I consider when choosing a 245/70R17 tire for a 2018 Jeep Trucks Grand Cherokee?
Start with the basics: 245/70R17 is the correct size only for certain 17-inch Grand Cherokee configurations, including the Laredo and some Laredo E setups. In the currently available product range, BFGoodrich offers the All-Terrain T/A KO2 in this fitment, with radial construction, raised white letter styling, and a 6.5 to 8.0 inch rim-width range.
That means the choice is about more than matching the size code. Check that the wheel is actually 17 inches in diameter and falls within the tire’s rim-width specification, then decide whether an all-terrain tread and RWL appearance suit the way the vehicle is used and the look you want.
What sidewall styles are available for 2018 Jeep Trucks Grand Cherokee tires?
Among the currently covered options for this vehicle, raised white letter sidewall styling is available in 245/70R17. That style appears on the BFGoodrich All-Terrain T/A KO2, giving the tire a more assertive truck-and-SUV presentation than a plain black sidewall.
Sidewall style is mostly an appearance decision, but it should still be made within the correct tire size for the sub-model and wheel package. A distinctive sidewall can change the personality of the vehicle visually, yet fitment, rim compatibility, and intended use still come first.
What brands offer tires for the 2018 Jeep Trucks Grand Cherokee?
BFGoodrich is represented in the current product coverage for the 2018 Jeep Trucks Grand Cherokee, specifically in the 245/70R17 fitment. The available example is the All-Terrain T/A KO2, a radial tire with an all-terrain character and raised white letter sidewall treatment.
Brand choice should still come after confirming the correct size for the vehicle. Since this Grand Cherokee uses several different fitments across the lineup, the first decision is trim and wheel diameter, and only then does it make sense to compare tread style, sidewall presentation, and other product details within that size.
Restoration & Appearance
Which tire should I choose for a period-style 2018 Jeep Trucks Grand Cherokee?
A period-style approach on a 2018 Jeep Trucks Grand Cherokee usually means preserving the correct size and wheel-package look for the exact trim rather than trying to create a vintage appearance. That starts with using the proper radial size for the vehicle, whether that is 245/70R17, 265/60R18, 265/50R20, or 295/45R20.
Appearance still matters, especially on a later collector SUV, but correct visual proportion comes from matching the original wheel diameter and tire profile. If originality is important, compare the current setup to trim-specific factory references or marque documentation before changing wheel size, sidewall look, or overall stance.
How does tire construction affect the appearance of a restored 2018 Jeep Trucks Grand Cherokee?
On a 2018 Jeep Trucks Grand Cherokee, appearance differences come less from bias-ply versus radial construction and more from keeping the proper modern radial fitment for the trim. This vehicle uses radial tires across its primary fitments, so the visual effect is shaped mainly by the correct size, sidewall profile, and wheel diameter.
A Grand Cherokee that keeps the right 17-inch, 18-inch, or 20-inch setup will usually look more natural than one wearing an incorrect substitute. Sidewall style can also shift the vehicle’s personality, so the best appearance result comes from staying with the proper fitment and choosing a tire that suits the trim’s intended presentation.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Jeep Trucks Grand Cherokee?
Yes. Wheel swaps, suspension changes, lowering, lift kits, and altered offsets can all affect tire fitment on a 2018 Jeep Trucks Grand Cherokee, even when the size looks close to stock. This matters especially on trims that already use wider or lower-profile combinations, such as the 295/45R20 setup on SRT and Trackhawk models.
The safest approach is to verify the wheel diameter, wheel width, and available clearance at full steering lock and normal suspension travel before replacing tires. A modified Grand Cherokee may no longer match the original trim-based fitment, so the current hardware on the vehicle matters more than the badge alone.
What should I inspect before driving a 2018 Jeep Trucks Grand Cherokee on new tires?
Before road use, inspect the wheel condition, valve stems, lug hardware, and tire pressure, and make sure the new tires match the correct size for the trim and wheel package. It is also worth checking for any visible suspension or steering issues that could affect tire wear or clearance.
A short initial drive should be followed by another look for rubbing, uneven seating, or unexpected air loss. On a vehicle with multiple possible wheel-and-tire packages like the 2018 Grand Cherokee, that quick recheck helps confirm that the chosen size works cleanly with the actual wheels and chassis condition.
How often should tires on a 2018 Jeep Trucks Grand Cherokee be inspected?
Tires on a 2018 Jeep Trucks Grand Cherokee should be inspected regularly, not just when tread looks low. Look for uneven wear, cuts, bulges, cracking, punctures, and ongoing pressure loss, especially if the vehicle sees mixed road conditions or sits for extended periods between drives.
Routine inspections matter because this model uses several different fitments, and each relies on the right inflation and healthy suspension to wear properly. A quick visual check before longer trips and periodic hands-on inspection during ownership can catch problems early, before they affect ride quality, handling, or tire life.
