Tire Size for Jeep Grand Cherokee: Stock & Max Fit

⚡ The Short Answer

Match your trim, then check the door jamb placard. Most Jeep Grand Cherokees from 2011 onward run one of four factory tire sizes: 245/70R17, 265/60R18, 265/50R20, or 295/45R20 on performance models. The exact size is printed on a sticker inside your driver-side door jamb. As long as you keep the overall diameter within about 3 percent of stock, you can change wheel and tire combinations without confusing the speedometer or traction control.

The Grand Cherokee has been one of America's most popular midsize SUVs for decades, and Jeep offered a lot of wheel options across trims. That is great for choice but confusing when you just want to know what tire to buy. The single most reliable source is not a forum post, it is the yellow-and-white tire placard on your door jamb, which lists the factory size and the recommended cold inflation pressure for your exact build.

📋 Factory Tire Sizes by Trim

These are the common original-equipment sizes for the modern WK2 (2011 to 2021) and WL (2022 and newer) Grand Cherokee. Some model years and option packages vary, so treat this as a guide and confirm with your placard.

Trim	Common Tire Size	Wheel	Approx. Diameter
Laredo / Base	245/70R17	17 in	~30.5 in
Limited	265/60R18	18 in	~30.5 in
Trailhawk	265/60R18	18 in	~30.5 in
Overland / Summit	265/50R20	20 in	~30.4 in
SRT	295/45R20	20 in	~30.5 in
Trackhawk	295/45R20	20 in	~30.5 in

Notice that the overall diameter stays close to 30.5 inches across nearly every trim. Jeep does this on purpose so the speedometer, anti-lock brakes, and all-wheel-drive system read wheel speed correctly. When you shop tires, that diameter is the number you want to preserve, not the wheel size alone.

🔢 How to Read Your Tire Size

A size like 265/60R18 looks like code, but each number is simple once you break it down. Knowing this lets you compare any tire without a chart.

265 is the tread width in millimeters.
60 is the aspect ratio, meaning the sidewall height is 60 percent of the width. A lower number is a shorter, sportier sidewall.
R means radial construction, which is standard on every modern tire.
18 is the wheel diameter in inches.

If you move to a bigger wheel, drop the aspect ratio to keep total height the same. That is why 265/50R20 and 265/60R18 are roughly the same overall diameter even though one rides on a 20-inch wheel and the other on an 18. Mismatching these is a common cause of a speedometer reading several mph off and can even surface as a stored fault code. If your dash is already throwing warnings, our Grand Cherokee check engine light guide walks through what to check first.

🔧 The Biggest Tire You Can Fit

This is the question most owners actually came here for. The honest answer is that fitment depends on how much you are willing to modify. Here is the realistic ladder for the modern Grand Cherokee.

Stock suspension

On an unmodified Grand Cherokee you can usually fit up to a 275/60R20 or roughly a 32-inch tire without rubbing. Many owners run this size daily with no trimming. Stay close to the factory diameter and you keep your electronics happy.

With a 2-inch leveling kit

A leveling kit lifts the front to match the rear and opens up clearance for 33-inch tires, commonly 275/70R18 or 285/65R18. You may see light rubbing at full lock or on big compressions, which a small fender liner trim solves.

With a suspension lift

To run 35-inch tires you generally need a full suspension lift, wheel spacers to push the tires outward, and often some fender or liner trimming. This is a real build, not a bolt-on. Larger tires also stress wheel bearings, ball joints, and the differential, so factor in faster wear. If you notice new vibration or noise after sizing up, compare it against our highway vibration diagnostic before assuming the tires are simply unbalanced.

⚠️ Common Mistakes to Avoid

Changing wheel size without adjusting profile. Jumping from 18s to 20s with the same aspect ratio makes the tire too tall, throwing off the speedometer by 5 mph or more and potentially tripping traction control.
Ignoring the load rating. The Grand Cherokee is a heavy SUV. A passenger-rated tire that is too soft can overheat when towing. Match or exceed the load index on your placard.
Mixing tire sizes front to rear. On an all-wheel-drive Grand Cherokee, even a slight size mismatch forces the transfer case to work constantly, which can cause expensive driveline damage over time.
Running 35s on stock suspension. They will rub, bind at full steering lock, and accelerate wear on suspension components.
Skipping the TPMS reset. New wheels often need the tire pressure sensors relearned, or you will get a persistent warning light.

🧮 How to Choose the Right Size

Use this quick decision framework to land on the right tire without overthinking it.

Read your door jamb placard. This is your factory baseline and the safest default.
Decide your goal. Pure highway comfort, mild off-road, or a serious trail build each point to a different tread and size.
Stay near stock diameter if you are not lifting. Keep within about 3 percent of the original height to avoid electronic gremlins.
Match the load and speed rating. Never go below what the placard lists.
Budget for the side effects. Bigger and heavier tires can cost 1 to 3 mpg and wear front-end parts faster.

If a shop quotes you for new tires plus an alignment and a bunch of front-end parts at the same time, run that estimate through our repair quote checker first to make sure the upsells are actually warranted for your mileage.

💬 Frequently Asked Questions

What is the stock tire size for a Jeep Grand Cherokee?

It depends on trim and year. Base and Laredo models typically run 245/70R17 or 265/60R18. Limited and Overland trims usually wear 265/50R20 or 265/60R18. Trailhawk models use a more aggressive 265/60R18. SRT and Trackhawk performance models run 295/45R20. Always confirm with the tire placard inside your driver-side door jamb.

What is the biggest tire you can fit on a stock Jeep Grand Cherokee?

On a completely stock Grand Cherokee, most owners can fit a 275/60R20 or roughly a 32-inch tire without rubbing. With a 2-inch leveling kit you can typically run 33-inch tires (around 285/65R18 or 275/70R18). Going to 35-inch tires generally requires a suspension lift, wheel spacers, and sometimes fender trimming.

Can I put 20-inch wheels on a Jeep Grand Cherokee that came with 18s?

Yes, but you must keep the overall tire diameter close to stock so your speedometer and electronics stay accurate. If you move from an 18-inch to a 20-inch wheel, choose a lower-profile tire such as 265/50R20 so the total height stays near the original. Mismatched diameters can trip the ABS, traction control, and transfer case sensors.

Will bigger tires hurt my Jeep Grand Cherokee gas mileage?

Usually yes. Larger or heavier tires add rolling resistance and rotational weight, which commonly drops fuel economy by 1 to 3 mpg. Taller tires also throw off the speedometer, so the truck may be working harder than the dash shows. Aggressive all-terrain tread costs more mpg than a highway tire of the same size.

Do all Jeep Grand Cherokee trims use the same bolt pattern?

Most modern Grand Cherokees (WK2 from 2011 to 2021 and WL from 2022 on) use a 5x127mm (5x5) bolt pattern. Older WK and WJ generations used 5x5 as well, but always verify before buying wheels. The bolt pattern affects which aftermarket wheels and spacers fit your specific year.

✅ TL;DR

Factory tire size for a Jeep Grand Cherokee runs from 245/70R17 on base trims to 295/45R20 on the SRT, with most models landing near a 30.5-inch overall diameter. On stock suspension you can fit about a 32-inch tire, a 2-inch leveling kit gets you to 33s, and 35-inch tires need a real lift with spacers. Check your door jamb placard, keep the diameter close to stock, and match the load rating. If a new tire purchase comes bundled with surprise front-end repairs, verify the quote before you pay.

What Tire Size Fits a Jeep Grand Cherokee?