2023 Jeep Grand Cherokee Summit Reserve
The 2023 Jeep Grand Cherokee Summit Reserve tire size and wheel specifications below reflect standard OEM reference fitment data for this trim level.
Detailed tire and wheel breakdown for the 2023 Jeep Grand Cherokee
Tire geometry â 275/50R21
The 275/50R21 fitted to the 2023 Jeep Grand Cherokee has a section width of 275mm and an aspect ratio of 50%, mounted on a 21-inch rim. That gives a sidewall height of 137.5mm (5.41") and an overall outside diameter of 808.4mm (31.83"). At highway speed this tire completes roughly 394 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2023 Jeep Grand Cherokee while keeping the speedometer accurate, target a 285/44R22 (plus-one). For a softer ride or winter setup, a 265/57R20 (minus-one) keeps the overall diameter within Âą3% of stock, which is the industry tolerance for ABS and stability control to stay calibrated.
Wheel fitment specs
The 2023 Jeep Grand Cherokee uses a 5x127 bolt pattern with a 71.5mm hub bore. Safe rim width range for the OEM tire is 8.5J â 9.5J, and offsets in the ET45 â ET55 window will clear suspension and fender without rubbing on most setups.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2023 Jeep Grand Cherokee is printed on the driver-side door jamb sticker â always defer to that value, not to the maximum pressure printed on the tire sidewall. Check pressure monthly and before long trips; under-inflation by 20% can reduce tread life by 25%.
Fitment Specifications
| Engine & Trim | Tire Size | Rim Size | Offset (ET) |
|---|---|---|---|
| Summit Reserve | 275/50R21 | 21" x 9.0 | ET50 |
Frequently Asked Questions
What tire size does the 2023 Jeep Grand Cherokee Summit Reserve use?
The 2023 Jeep Grand Cherokee Summit Reserve uses 275/50R21 tires as standard equipment.
What is the bolt pattern of the 2023 Jeep Grand Cherokee Summit Reserve?
The 2023 Jeep Grand Cherokee Summit Reserve has a 5x127 bolt pattern with a center bore of 71.5mm.
What is the wheel offset of the 2023 Jeep Grand Cherokee Summit Reserve?
The 2023 Jeep Grand Cherokee Summit Reserve has a wheel offset of ETET50.