
CT6 offers two specifications of tires across its entire lineup: Goodyear EfficientGrip Performance 235/50R18 and Goodyear EAGLE F1 245/45R19. The spare tire is a non-full-size Maxxis tire with the specification T135/70R18. Cadillac is a luxury automobile brand under General Motors, with products including Cadillac, Cadillac XLR, Cadillac XTS, and Cadillac CT5. The Cadillac CT5 is a mid-size car under SAIC-GM-Cadillac, with body dimensions of 4924mm in length, 1883mm in width, and 1453mm in height.

I've been driving a CT6 for several years, mostly using the original tires, typically the Goodyear Eagle or Michelin Primacy series. The standard version usually comes with 245/45 R19 tires, which provide good stability. In the city, the tire noise is low, and the comfort is excellent; on the highway, they grip well, so I don't worry much about slipping. Different configurations may use different tires—for example, the luxury version might have slightly wider 265 tires. I think tire selection should consider the season: summer tires perform well on dry roads, but in cold winters, snow tires are safer. The tire lifespan is around 50,000 kilometers, so it's important to regularly check tire pressure and tread depth. I get them inspected during annual maintenance. When replacing tires, don't skimp—poor-quality tires age quickly and affect overall performance.

As someone who works on cars frequently, the common original tires for the CT6 are 245/45 R19, with brands like Goodyear, Michelin, or Bridgestone. I would remind owners to check tread depth and balance during every maintenance to avoid uneven wear; low tire pressure increases fuel consumption, while high pressure risks blowouts. Size matching is crucial—the CT6 has strong power and requires sufficient load capacity, so don’t casually switch to smaller sizes. Summer tires perform well in dry and wet conditions, but for cold regions, upgrading to all-season or winter tires is advisable. Tires generally last 3 to 5 years, depending on road conditions. I recommend a wheel alignment every quarter to extend tire life and ensure safety.

I've been driving the CT6 for several years, and the original tires are mostly Goodyear 245-width tires, which are comfortable and durable. They're not noisy during long-distance driving and perform well in rainy conditions. However, with long-term use, I must say tire wear varies from person to person. For me, commuting mostly in the city, I didn't replace them until over 50,000 kilometers. If you drive aggressively, they wear out faster, so early inspection is necessary. When replacing, I tried different brands, and Michelin was quieter with good cost performance. Remember to check the manual, as tire specifications for the CT6 may vary by year—don't buy the wrong size. Regular is simple: check the tire pressure monthly to avoid repair hassles.

When it comes to car tuning, I pay attention to the tire performance of the CT6. The factory usually equips it with 245/45 R19 Michelin or Goodyear tires, which offer sharp handling on dry roads. After switching to performance tires, the response becomes even more precise, but you have to accept slightly increased road noise. Size changes make a big difference—for example, the V-series comes with wider 275 tires for better grip. Your driving style determines tire choice: if you prefer high-speed cornering, opt for high-grip tires; summer tires excel in wet conditions with good water drainage, while dedicated winter tires are essential for cold temperatures. Tire pressure adjustment is an art—lower pressure offers a softer, more comfortable ride, while higher pressure enhances handling with a firmer feel. I recommend testing them before each season to ensure driving safety isn’t compromised.

I just got my hands on a CT6 and learned that the original tires are usually Goodyear Eagle or Michelin, with sizes around 245/45 R19. They are comfortable for beginners and don’t slip in rain or snow. However, before changing tires, it’s recommended to check the manual for confirmation, as different configurations may vary. Maintenance is simple: check tire pressure every two months, replace them when the tread is shallow to avoid the risk of a blowout. Friends recommended other brands that are cheaper and perform well, but I still trust the quality of the original tires. Remember, the tire date code should not exceed 5 years, and the mileage should not surpass 80,000 kilometers.


