Before fitting the biggest tires to your Jeep Grand Cherokee, It is important to remember that in some cases, larger tires may require modifications to your truck’s suspension, wheel arch linings, fender flares, and potentially the recalibration of the truck’s speedometer to accommodate the larger tires rolling circumference.
- Be aware that larger tires can also hurt the overall fuel consumption
- Bigger tires affect the driving dynamics of the vehicle
- Side effects of larger tires include slower acceleration, handling, brake distance, and fuel efficiency.
- Stay within the 3-5% tire increase safe zone.
Next, let’s look into the Jeep Grand Cherokee tire size options in more detail.
Table of Contents
Biggest Tires On A Stock 2023 Grand Cherokee WK2: 20″ options
After doing extensive research, many owners are reporting that 32-inch on 20-inch wheels are the go without any additional modifications. The main concern with the Jeep Grand Cherokee is the clearance from the suspension control arm in front.
- It has a curve with a bolt setup that drastically reduces your options
- Wheel space is very limited.
- An aftermarket wheel with a better offset will remedy clearance issues.
- Alternatively, a small wheel spacer would improve wheel clearance somewhat.
If you want to go bigger than 32” then you can opt for wheel spacers. There will be some additional modifications to the wheel arches and even the pinch weld on the chassis located directly behind the front tire.
- Anything bigger than 32” is going to require some major cutting and cleaning up behind the front tire to allow for clearance.
- The front section of the front wheel well also makes contact at full lock
- Trim some plastic away or tuck it back somehow to prevent rubbing at full lock.
Another area of concern when fitting larger tires is the brake calipers. The Grand Cherokee brake calipers are massive and if you are considering fitting a 17 or 18” wheel just make sure you check the clearance from the caliper as it would be a very tight squeeze.
Below are a few 32-inch tire options in 17-20” wheel sizes:
jeep grand cherokee big tires no lift 18″ option
When it comes to fitting 18-inch tires on the JGC, your biggest tire option without additional modifications will be a large 30-inch tire with a metric value of 265/60r18 AT (all terrains).
You can opt to go slightly bigger to a 31.6-inch tire in the form of 265/65r18s, however, there will be contact against the wheel well liner that will require additional modifications. It looks amazing, however, it makes contact and rubs the inner fender just slightly when the suspension is on one of the lower settings.
Below are a few 31-inch tire options on 18” wheels:
Understanding Tire Sizes
Most people look at the information printed on the tire sidewall and have no clue what it means. There are so many numbers that can be quite confusing, BUT, it doesn’t have to be. Below is a simple breakdown of what all those numbers and codes mean.
Let’s use this tire size (265/70/R17) to explain.
|Refers to the tire’s width and is measured in millimeters
|Refers to the tire’s aspect ratio, which refers to the tire’s sidewall height and is measured in percent (%). It refers to 70% of the 265mm tread width.
|Refers to the tire’s width and is measured in millimeters
NOTE: A tire’s actual size may not be exactly as printed by the manufacturer. Tire manufacturers use their tire moulds which differ slightly between brands. Different designs and tread patterns may cause a slight size difference between tires that have the same size codes.
This means that a tire from brand A might fit your truck but one from brand B of the same size won’t.
User Experience and Feedback
Let’s look at a few real-world user experiences and feedback directly from owners who have successfully fitted bigger tires.
User Experience #1
I have a ’22 Grand Cherokee Summit (not the L). It came w 265/50r20 all seasons. I intended to put on 265/60r18 all terrains, but the shop put on 265/65r18s.
It looks amazing, but rubs the inner fender some, especially when the suspension is on one of the lower settings of course. I still haven’t decided whether to have the tire shop put on the 265/60s, or alter the inner fender.https://www.jeepgarage.org/threads/wl-has-some-one-determined-the-largest-size-tire-on-a-wl-grand-cherokee-l.234063/page-3
User Experience #2
285/60 R18’s add 1inch to diameter (so 1/2 inch closer to control arm) and approx 1 inch wider. I run them on my 2016 WK2 with no rubbing issues.
They would work on 2022 as well as you have about 1 1/2 inches of room between stock 265/60 18’s and control arm. I use after-market OE rim with +35 offset to push the wheel out just a tad from stock +51 rims but mounting on stock rims would work as well.https://www.jeepgarage.org/threads/wl-has-some-one-determined-the-largest-size-tire-on-a-wl-grand-cherokee-l.234063/page-3
User Experience #3
i own a 2021 GCL limited and i was able to fit 275/55R20’s on mine with no modifications. i fit some Kenda Klever R/T’s on it. they are as big as i can go without any rubbing.. anything else id have to fit spacers or get a lift. I’m still thinking of getting spacers to be honest just to complete the look.https://www.jeepgarage.org/threads/wl-has-some-one-determined-the-largest-size-tire-on-a-wl-grand-cherokee-l.234063/page-2
- Photo by Jakob Rosen on Unsplash
Variations in fitment options based on user feedback can be inconsistent at times. This is mainly due to construction variables from different tire manufacturers. In some cases, a certain tire brand will fit a vehicle perfectly, while others of the same size from a different manufacturer will not. This is mainly because tire manufacturers use their tire molds which differ slightly in overall size between brands.
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