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What is the tire size for the Buick LaCrosse?

1 Answers

DelOlive

07/29/25 4:16pm

The Buick LaCrosse comes with three tire specifications: the 2022 LaCrosse Avenir Flagship model - 245/45R19, the 2022 LaCrosse 552T Luxury model - 235/55R17, and the 2022 LaCrosse 652T Luxury model - 235/50R18. In 245/45R19, the first number 245 represents the tire width of 245MM, 45 indicates the aspect ratio of the tire section is 45%, meaning the section height is 45% of the width, and 19 stands for the rim diameter of 19 inches. The letter "R" in the middle denotes a radial tire. In 235/55R17, 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 17 stands for the rim diameter of 17 inches. The letter "R" in the middle denotes a radial tire. In 235/50R18, the first number 235 represents the tire width of 235MM, 50 indicates the aspect ratio of the tire section is 50%, meaning the section height is 50% of the width, and 18 stands for the rim diameter of 18 inches. The letter "R" in the middle denotes a radial tire. The tire specifications are marked on the tire sidewall, generally including the tire size, aspect ratio, width, etc. The parameters of car tire specifications are expressed in millimeters for the section width and as a percentage for the aspect ratio. This is followed by: tire type code, rim diameter (in inches), load index (permissible load-bearing quality code), and permissible speed code. Simply put, the wider the tire, the larger the contact area with the ground, improving the driving feel and stability of the car. However, wider tires have greater rolling resistance, leading to higher fuel consumption. Determine whether to replace tires based on wear: aging cracks usually appear on the tread pattern and the sidewall; wear has reached or exceeded the minimum limit marker; localized bulges may cause uneven force distribution and potential blowouts; assess the depth and area of damage to decide between repair or replacement; sidewall cracks require replacement; exceeding a certain number of repairs means the tire can no longer be used. The Buick LaCrosse tires are Michelin, and the spare tire is non-full-size. In addition to the size, 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. Speed rating: indicates the maximum speed at which the tire can carry a specified load under defined 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.

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