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What are the tire specifications for the Buick GL8?

1 Answers

OCarmen

07/30/25 10:01am

The Buick GL8 has two tire specifications: 225/60R17 and 225/55R18. In 225/60R17, the first number 225 represents the tire width of 225MM, 60 indicates the aspect ratio of the tire section is 60%, meaning the section height is 60% of the width, and 17 represents the rim diameter of 17 inches. The letter "R" in the middle stands for radial tire. In 225/55R18, the first number 225 represents the tire width of 225MM, 55 indicates the aspect ratio of the tire section is 55%, meaning the section height is 55% of the width, and 18 represents the rim diameter of 18 inches. The letter "R" in the middle stands for radial tire. The Buick GL8 tires are Continental ContiSeal, featuring chrome-plated rims with a petal-style rim design. The spare tire is non-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 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. The jack should be positioned under the vehicle, and ensure it is perpendicular to the ground; Remove the hubcap and loosen the nuts counterclockwise. Do not fully unscrew the nuts, just enough to eliminate resistance. When loosening the nuts for the first time, keeping the tire on the ground ensures that the nuts turn, not the tire; Turn the nuts counterclockwise until they are loose. Repeat this step for all lug nuts and 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 tighten them by hand until all nuts are snug. The tire replacement is now complete. Besides the specifications, tires also have the following common markings: 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 the tire can carry the specified load under specified 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 specification compatible with the tire for practical use, such as "Standard Rim 5.00F".

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