2020 Cadillac CT6 Spare Tire
The Cadillac CT6, a luxury sedan model from the renowned automaker, typically does not come standard with a physical spare tire, instead it is equipped with a tire inflator kit. However, a compact spare tire is available as an optional feature for convenient roadside tire emergencies. The compact spare tire is much smaller than the car ' s regular tires, designed for temporary and limited use. If chosen, the size of the spare tire provided by Cadillac for CT6 models is usually T135/70R18 meaning the width of the tire is approximately 135mm, aspect ratio is around 70% and it fits on an 18-inch diameter wheel. It is essential to remember that the compact spare tire should never replace a regular tire for an extended period since it is explicitly purposed for short-term, emergency use to reach a safer location or nearby repair shop.
2020 Cadillac CT6 comes with 3 OEM tire size options. Select the original equipment the tire size installed on your vehicle to see all spare tires that have roughly the same tire diameter and can be used as a temporary replacement in the event of a flat tire. Remember that load carrying capacity of the spare tire must be the same or higher than the load carrying capacity of the original equipment tires in order to safely support the weight of your vehicle. Refer to vehicle owner's manual or contact Cadillac dealership to confirm the correct 2020 Cadillac CT6 spare tire size.
235/50R18
235/50R18 tire has a diameter of 27.3". These temporary spare tires fit the acceptable tire diameter range of 26.5" to 28.1".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/60R20from $271.36 | 26.9" | -1.5% |
| T145/80D18from $257.05 | 27.1" | -0.7% |
| T155/70R19from $237.96 | 27.6" | 1.1% |
| T155/70R18from $178.60 | 26.6" | -2.6% |
| T165/80R17from $166.85 | 27.4" | 0.4% |
| T135/90R17from $158.19 | 26.6" | -2.6% |
| T145/65R20from $146.43 | 27.4" | 0.4% |
| T165/80D17from $124.93 | 27.4" | 0.4% |
| T145/85R18from $118.73 | 27.7" | 1.5% |
| T155/90D17from $114.99 | 28" | 2.6% |
| T155/80D17from $97.90 | 26.8" | -1.8% |
| T155/90D16from $92.99 | 27" | -1.1% |
| T165/70D18 | 27.1" | -0.7% |
| T165/60R20 | 27.8" | 1.8% |
| T155/90R17 | 28" | 2.6% |
| T155/90R16 | 27" | -1.1% |
| T155/80R18 | 27.8" | 1.8% |
| T155/80R17 | 26.8" | -1.8% |
| T155/80D18 | 27.8" | 1.8% |
| T155/70D18 | 26.6" | -2.6% |
| T145/90R17 | 27.3" | 0% |
| T145/90D17 | 27.3" | 0% |
| T145/80R18 | 27.1" | -0.7% |
| T135/90D17 | 26.6" | -2.6% |
| T165/70R18 | 27.1" | -0.7% |
245/40R20
245/40R20 tire has a diameter of 27.7". These temporary spare tires fit the acceptable tire diameter range of 26.9" to 28.5".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/80D18from $257.05 | 27.1" | -2.2% |
| T155/70R19from $237.96 | 27.6" | -0.4% |
| T155/85D18from $185.43 | 28.4" | 2.5% |
| T145/80R19from $183.34 | 28.1" | 1.4% |
| T165/80R17from $166.85 | 27.4" | -1.1% |
| T145/65R20from $146.43 | 27.4" | -1.1% |
| T165/80D17from $124.93 | 27.4" | -1.1% |
| T145/85R18from $118.73 | 27.7" | 0% |
| T155/90D17from $114.99 | 28" | 1.1% |
| T155/90D16from $92.99 | 27" | -2.5% |
| T165/70D18 | 27.1" | -2.2% |
| T165/60R20 | 27.8" | 0.4% |
| T155/90R17 | 28" | 1.1% |
| T155/90R16 | 27" | -2.5% |
| T155/80R18 | 27.8" | 0.4% |
| T155/80D18 | 27.8" | 0.4% |
| T145/90R17 | 27.3" | -1.4% |
| T145/90D17 | 27.3" | -1.4% |
| T145/80R18 | 27.1" | -2.2% |
| T165/70R18 | 27.1" | -2.2% |
245/45R19
245/45R19 tire has a diameter of 27.7". These temporary spare tires fit the acceptable tire diameter range of 26.9" to 28.5".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/80D18from $257.05 | 27.1" | -2.2% |
| T155/70R19from $237.96 | 27.6" | -0.4% |
| T155/85D18from $185.43 | 28.4" | 2.5% |
| T145/80R19from $183.34 | 28.1" | 1.4% |
| T165/80R17from $166.85 | 27.4" | -1.1% |
| T145/65R20from $146.43 | 27.4" | -1.1% |
| T165/80D17from $124.93 | 27.4" | -1.1% |
| T145/85R18from $118.73 | 27.7" | 0% |
| T155/90D17from $114.99 | 28" | 1.1% |
| T155/90D16from $92.99 | 27" | -2.5% |
| T165/70D18 | 27.1" | -2.2% |
| T165/60R20 | 27.8" | 0.4% |
| T155/90R17 | 28" | 1.1% |
| T155/90R16 | 27" | -2.5% |
| T155/80R18 | 27.8" | 0.4% |
| T155/80D18 | 27.8" | 0.4% |
| T145/90R17 | 27.3" | -1.4% |
| T145/90D17 | 27.3" | -1.4% |
| T145/80R18 | 27.1" | -2.2% |
| T165/70R18 | 27.1" | -2.2% |
More Cadillac CT6 Spare Tires
All listed guides, data and/or calculations are for informational purposes only. Spare-Tires.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information. Always refer to vehicle owner's manual for the correct spare tire size configuration.