What is the tire size of the Wrangler?
4 Answers
The Wrangler has three tire size specifications: 255/75R17, 255/70R18, and 245/75R17. In 255/75R17, the first number 255 represents the tire width of 255MM, 75 indicates the aspect ratio of the tire section is 75%, meaning the section height is 75% of the width, 17 represents the rim diameter of 17 inches, and the letter "R" in the middle stands for radial tire. In 255/70R18, the first number 255 represents the tire width of 255MM, 70 indicates the aspect ratio of the tire section is 70%, meaning the section height is 70% of the width, 18 represents the rim diameter of 18 inches, and the letter "R" in the middle stands for radial tire. In 245/75R17, the first number 245 represents the tire width of 245MM, 75 indicates the aspect ratio of the tire section is 75%, meaning the section height is 75% of the width, 17 represents the rim diameter of 17 inches, and the letter "R" in the middle stands for radial tire. The Wrangler's tires are from the Goodyear brand, featuring an open shoulder tread block design, with the spare tire being full-size. If you want to replace the tires yourself, follow these steps: Take out the spare tire and jack, place the jack under the frame of the tire you want to replace, ensuring the jack touches the metal part of the frame; Raise the jack until it supports the car, the jack should be under the vehicle, check and ensure the jack is at a right angle to the ground; Remove the hubcap, loosen the nuts counterclockwise, do not completely loosen them, just enough to eliminate resistance, keeping the tire on the ground when first loosening the nuts ensures the nuts turn instead of the tire; Turn the nuts counterclockwise until they come off, repeat this step for all lug nuts, then remove the nuts completely; Place the new tire on the hub, carefully align the tire rim with the wheel bolts, install the lug nuts, tighten them by hand until all nuts are snug, at which point the tire replacement is complete. Besides the model, tires also have the following common markings: Tire cord material: indicated by Chinese pinyin, such as M-cotton cord, R-rayon cord, N-nylon cord, G-steel cord, ZG-steel radial cord. Speed rating: indicates the maximum speed the tire can carry a specified load under specified conditions. Letters A to Z represent certified speed ratings from 4.8km/h to 300km/h. Common speed ratings include: Q: 160km/h; H: 210km/h; V: 240km/h; W: 270km/h; Y: 300km/h; Rim specification: indicates the rim size compatible with the tire for practical use, such as "Standard rim 5.00F".
I know the tire size of the Jeep Wrangler usually depends on the specific model and year. Standard models like the Sport or Sahara commonly use 245/75R16 or 255/75R17, where the number 245 represents the tire width in millimeters, 75 refers to the aspect ratio, and R17 indicates a 17-inch wheel. The high-performance Rubicon version often features larger sizes like 285/70R17 or 33-inch tires, enhancing off-road capability and ground clearance. As someone who frequently works on cars, I recommend first checking the label on the inside of the door or the owner’s manual for the original specifications. If you plan to upgrade your tires, be aware that excessively large sizes may require adjustments to the suspension and speed sensors, otherwise affecting handling and fuel efficiency. When modifying, choosing AT or MT tires can improve traction on muddy terrain, but always ensure the wheels are compatible to avoid wear and tear—safety comes first. Regularly checking tire pressure and tread depth can also extend their lifespan.
I just bought a used Wrangler with the factory tire size of 255/75R17, and found it perfect for daily driving while handling mud and gravel off-road. Wheel size directly affects vehicle stability and visual appeal—my experience shows that upgrading to 285mm wide tires gives more ground clearance and a cooler look, but slightly increases fuel consumption, requiring extra caution on long trips. I advise beginners not to rush into changing sizes; check the manual to confirm OEM specs first, as mismatched sizes can cause odometer errors or even weaken braking. During off-road adventures, I always remind myself to check tire pressure for optimal performance and avoid blowouts. After modifications, recalibrate headlight height and steering angles for safer driving—don’t repeat my early carelessness that led to minor mishaps.
Jeep Wrangler tire sizes vary by model. Base models like the 4-door version often come with 245 or 255 series tires, followed by R16 or R17 wheel sizes. Safety-wise, oversized tires raise the center of gravity, increasing rollover risk on mountain roads. When I drove off-road, the factory 255/75R17 tires provided solid traction and reliable braking on wet surfaces. Avoid arbitrary size changes—check the vehicle placard or consult dealers, as incorrect sizing affects braking distance. Annual tire inspections help replace aging tires promptly.
