What is the size of the spare tire for the old Buick Regal?

1 Answers
DiRosalie
07/29/25 7:42pm
The spare tire model is T125/80R18, which is a non-full-size spare tire. The vehicle tire models are 205/65R16, 225/55R17, and 245/45R18, with different configurations of the vehicle adopting different tire models. The vehicle model year is 2019, and the entire lineup is equipped with a tire pressure display function, greatly enhancing safety. Below are additional notes on spare tire usage: 1. Regularly inspect the spare tire: Spare tire inspection mainly involves checking tire pressure and for any wear or cracks. Replace the tire as soon as possible once the tread wears down to the wear indicator line. If there are small cracks on the tire sidewall, avoid using it for long-distance or high-speed driving, as the sidewall is thinner and prone to blowouts at high speeds. 2. Do not store oil products with the spare tire: The main component of tires is rubber, which is most vulnerable to erosion by various oil products. If the tire comes into contact with oil stains, promptly wash them off with a neutral detergent. 3. Spare tire lifespan is about 4 years: Since tires are rubber products, prolonged storage can lead to aging. Generally, the aging period for tires is about 4 years, so the spare tire should be replaced after 4 years.
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