What is the tire model of the Lexus RX450?
2 Answers
The tire size of the Lexus RX450 is 235/55R20. The first number, 235, represents the tire width of 235MM. The 55 indicates the aspect ratio of the tire section is 55, meaning the section height is 55% of the width. The 20 represents the rim diameter of 20 inches, and the letter "R" in the middle stands for radial tire. The brand of the Lexus RX450 tire is Dunlop, featuring multi-spoke alloy wheels, with the spare tire being non-full size. If you want to replace the tire yourself, you can follow these steps: Take out the spare tire and jack, place the jack under the vehicle frame near the tire to be replaced, ensuring the jack touches 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 and loosen the nuts counterclockwise. Do not fully loosen the nuts, just enough to eliminate resistance. Keeping the tire on the ground when first loosening the nuts ensures that the nuts turn, not the tire; Turn the nuts counterclockwise until they come off, repeating this step for all lug nuts, then completely remove the nuts; Place the new tire on the wheel hub, carefully aligning the tire rim with the wheel bolts. Install the lug nuts and tighten them by hand until all nuts are concealed. At this point, the tire replacement is complete. In addition to the model, tires also display the following common data: Tire cord material: Indicated by Chinese pinyin, such as M for cotton cord, R for rayon cord, N for nylon cord, G for steel cord, and ZG for steel radial cord tires. Speed rating: Indicates the maximum speed at which 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, facilitating practical use, such as "Standard Rim 5.00F".
My Lexus RX450 originally came with 235/55R20 tires, which I specifically confirmed during last year's maintenance. This size provides a good balance between comfort and support, with decent wet traction. When replacing tires, pay attention to the load index and speed rating markings - mine shows 103V on the sidewall. Never buy the wrong size as it could affect the speedometer display. I recommend prioritizing all-season tires from Michelin or Bridgestone for durability and quiet performance.
