What is the tire size of Model Y?

[RyderDella]

Model Y comes with 2 types of tires. For the 2022 Model Y base version and the Model Y Long Range version, the front and rear tire specifications are 255/45R19. For the Model Y Performance version, the front tire specification is 255/45R19, while the rear tire specification is 275/35R21. In the 255/45R19 specification, the first number 255 represents the tire width of 255MM, 45 indicates the aspect ratio of the tire section is 45%, meaning the section height is 45% of the width, and 19 denotes the rim diameter of 19 inches. The letter R in the middle stands for radial tire. In the 275/35R21 specification, the first number 275 represents the tire width of 275MM, 35 indicates the aspect ratio of the tire section is 35%, meaning the section height is 35% of the width, and 21 denotes the rim diameter of 21 inches. The letter R in the middle stands for radial tire. The original tire brands for Model Y are Hankook and Michelin, with the 19-inch tires featuring Gemini wheel rims. Tires are crucial components of a vehicle, with over 10 markings on them. Correctly identifying these markings is essential for tire selection, usage, and maintenance, significantly contributing to driving safety and extending tire lifespan. Typically mounted on metal rims, tires support the vehicle body, absorb external shocks, ensure contact with the road, and maintain driving performance. Tires operate under complex and demanding conditions, enduring various deformations, loads, forces, and temperature extremes. Thus, they must possess high load-bearing, traction, and cushioning capabilities, along with excellent wear resistance, flexibility, low rolling resistance, and heat generation. Tire Specifications: Specifications indicate geometric parameters and physical performance data of tires. There are three methods to represent tire specifications: A. Metric (m); B. Mixed metric-imperial; C. Imperial. Imperial tire specifications commonly use a set of numbers, where the first number represents the tire section width, and the second number represents the rim diameter, both in inches. Tires can be categorized into approximately 8 types based on vehicle type: PC—Passenger car tires; LT—Light truck tires; TB—Truck and bus tires; AG—Agricultural vehicle tires; OTR—Off-the-road tires; ID—Industrial vehicle tires; AC—Aircraft tires; MC—Motorcycle tires. Structurally, tires can be divided into bias-ply tires and radial tires. Modern passenger cars predominantly use radial tires, denoted by the letter R, while bias-ply tires are denoted by D. The fundamental difference lies in the carcass: bias-ply tires have crisscrossed layers of fabric, whereas radial tires feature multiple layers of polymer material, with the top layer consisting of steel belts to reduce puncture risks. Besides specifications, tires also display the following common data: Carcass cord material: Represented 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 a tire can carry a specified load under defined conditions. Letters A to Z represent 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, e.g., standard rim 5.00F.