What is the original tire size of the Highlander?
3 Answers
The Highlander comes with two original tire size specifications: 235/65R18 and 235/55R20. In 235/65R18, the first number 235 represents the tire width of 235MM, 65 indicates the aspect ratio of the tire section is 65%, meaning the section height is 65% of the width, and 18 stands for the rim diameter of 18 inches. The letter "R" in the middle denotes a radial tire. In 235/55R20, the first number 235 represents the tire width of 235MM, 55 indicates the aspect ratio of the tire section is 55%, meaning the section height is 55% of the width, and 20 stands for the rim diameter of 20 inches. The letter "R" in the middle denotes a radial tire. The Elite trim of the Highlander is equipped with 18-inch aluminum alloy wheels, featuring a robust and simple five-spoke silver design, paired with Dunlop SP-SPOORT-MAXX-050 series tires. The Premium and Platinum trims use identical 20-inch aluminum alloy wheels with slender silver-gray multi-spoke combinations, matched with Yokohama BluEarth-XT series or Dunlop SP-SPOORTMAXX-050 series tires. If you wish to replace the tires yourself, follow these steps: Retrieve the spare tire and jack, place the jack under the vehicle frame near the tire to be replaced, ensuring the jack contacts the metal part of the frame; Raise the jack until it supports the car, making sure the jack is positioned under the vehicle and at a right angle to the ground; Remove the hubcap, loosen the nuts counterclockwise without fully removing 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 are loose, repeat this for all lug nuts, then remove them completely; Place the new tire on the hub, carefully aligning the tire rim with the wheel bolts, install the lug nuts, and hand-tighten them until all nuts are snug. The tire replacement is now complete. Besides the model, tires also display the following common data: 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 tire. 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: Shows the rim size compatible with the tire for practical use, such as "Standard rim 5.00F".
I recently had maintenance done on my Highlander. The original tire size is typically 245/60R18 18-inch, which for an SUV strikes a good balance between comfort and handling. While driving, it provides a smooth experience, especially on highways where noise levels are low. Switching to a much larger size, like 20-inch, might look better but can lead to a bumpier ride and increased fuel consumption. I recommend owners stick with the original size. If you do change them, check the odometer and speed calibration to avoid data discrepancies that could affect safety. On long trips, this size helps reduce vibrations, making rear-seat passengers feel more comfortable. Regularly checking tire wear and pressure can extend their lifespan and ensure driving safety.
As someone who frequently works on Toyota vehicles, the Highlander's original tires are often equipped with 245/60R18 or 255/55R19 wheel sizes. These dimensions were designed considering the vehicle's weight and suspension system compatibility. Incorrect sizes may cause ABS malfunctions or tire pressure monitoring failures—I've encountered cases where improper replacements led to braking issues in my work. Owners should prioritize original sizes when changing tires to avoid affecting balance or fuel efficiency. It's also crucial to verify the speed rating and load index, as these details impact daily driving reliability. Undersized tires worsen handling and increase risks on wet or slippery roads.
