What is the size of the spare tire for the Buick Regal?
3 Answers
The spare tire model for the Buick Regal is T125/80R18, which is a non-full-size spare tire. The vehicle's tire models are 205/65R16, 225/55R17, and 245/45R18, with different configurations using different tire models. The vehicle year model is 2019, and the entire lineup is equipped with a tire pressure display function, greatly enhancing safety. Below are some important notes regarding the use of spare tires: Regularly inspect the spare tire: Spare tire inspection mainly involves checking tire pressure, wear, and cracks. Tires should be replaced as soon as possible once the tread wears down to the wear indicator line. If there are minor cracks on the tire sidewall, avoid using the spare tire for long-distance or high-speed driving, as the sidewall is thinner and more prone to blowouts at high speeds. Do not store oil products with the spare tire: The main component of tires is rubber, which is highly susceptible to erosion by various oil products. If the tire comes into contact with oil stains, promptly wash them off with a neutral detergent.
As an owner of a 12-year-old Buick Regal, my 2007 model came with a smaller T-type spare tire, sized T125/70 D16. The original tires on the car are 215/55 R17, so the spare in the trunk is noticeably narrower and has a steel rim. This temporary spare tire has a maximum speed limit of 80 km/h. Last time I had a flat and used it, I noticed the steering felt noticeably floaty. When changing to the spare, pay special attention to tire pressure - the standard is 4.2 bar, so I recommend keeping a tire pressure gauge in the car. The spare tire nuts need to be tightened to 135 N·m torque. The mechanic at the repair shop mentioned many people don't tighten them properly, causing wheel vibration.
Previously handled many spare tire cases for older Regal models. Taking the 2002-2008 models as an example, they all came standard with a 16-inch diameter temporary spare tire, specifically the T125/70 specification, with a diameter about 3.5 cm smaller than the original tires. The steel wheels feature an anti-rust coating, and the mounting bolts are M12×1.5 specification. It's important to note that the foam bracket in the spare tire well is prone to aging and cracking, which can cause the spare tire to shift and create noise. Last year, while helping a customer replace the bracket, it was also discovered that the spare tire's manufacturing date label is mostly located on the inner side of the wheel, and rubber over 10 years old is recommended to be replaced directly.
