2008 Cadillac STS Spare Tire
The Cadillac STS, a luxury mid-sized sedan, is often equipped with a compact or donut spare tire to be utilized in the event of a tire failure. These temporary spare tires, typically smaller and narrower than regular tires, are designed to save both space and weight, and hence are stored in the trunk of the car. The exact size of the Cadillac STS's spare tire depends on the year and model of the car, but many versions have a temporary spare tire size of T125/70R16. However, it's vital to remember that these spare tires are not meant for long-term use, as they're not as durable or stable as regular tires, and should be replaced as soon as possible.
2008 Cadillac STS comes with 4 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 2008 Cadillac STS spare tire size.
255/45R18
255/45R18 tire has a diameter of 27". These temporary spare tires fit the acceptable tire diameter range of 26.2" to 27.8".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/60R20from $271.36 | 26.9" | -0.4% |
| T145/80D18from $257.05 | 27.1" | 0.4% |
| T155/70R19from $237.96 | 27.6" | 2.2% |
| T155/70R18from $178.60 | 26.6" | -1.5% |
| T165/80R17from $166.85 | 27.4" | 1.5% |
| T135/90R17from $158.19 | 26.6" | -1.5% |
| T135/70R19from $147.99 | 26.5" | -1.9% |
| T145/65R20from $146.43 | 27.4" | 1.5% |
| T135/80R18from $125.96 | 26.5" | -1.9% |
| T165/80D17from $124.93 | 27.4" | 1.5% |
| T145/85R18from $118.73 | 27.7" | 2.6% |
| T155/80D17from $97.90 | 26.8" | -0.7% |
| T155/90D16from $92.99 | 27" | 0% |
| T145/90D16from $88.99 | 26.3" | -2.6% |
| T165/70D18 | 27.1" | 0.4% |
| T155/90R16 | 27" | 0% |
| T155/80R17 | 26.8" | -0.7% |
| T155/70D18 | 26.6" | -1.5% |
| T145/90R17 | 27.3" | 1.1% |
| T145/90R16 | 26.3" | -2.6% |
| T145/90D17 | 27.3" | 1.1% |
| T145/80R18 | 27.1" | 0.4% |
| T135/90D17 | 26.6" | -1.5% |
| T135/80D18 | 26.5" | -1.9% |
| T165/70R18 | 27.1" | 0.4% |
P235/50R17
P235/50R17 tire has a diameter of 26.3". These temporary spare tires fit the acceptable tire diameter range of 25.5" to 27.1".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/60R20from $271.36 | 26.9" | 2.3% |
| T155/70R18from $178.60 | 26.6" | 1.1% |
| T155/70D17from $175.43 | 25.6" | -2.7% |
| T135/90R17from $158.19 | 26.6" | 1.1% |
| T135/90R16from $155.20 | 25.6" | -2.7% |
| T135/70R19from $147.99 | 26.5" | 0.8% |
| T155/70R17from $139.76 | 25.6" | -2.7% |
| T135/80R18from $125.96 | 26.5" | 0.8% |
| T145/70D18from $118.97 | 26" | -1.1% |
| T115/95R17from $117.54 | 25.6" | -2.7% |
| T155/80D17from $97.90 | 26.8" | 1.9% |
| T155/90D16from $92.99 | 27" | 2.7% |
| T145/90D16from $88.99 | 26.3" | 0% |
| T145/80D17from $81.99 | 26.1" | -0.8% |
| T155/80R17 | 26.8" | 1.9% |
| T155/90R16 | 27" | 2.7% |
| T165/70D17 | 26.1" | -0.8% |
| T165/70R17 | 26.1" | -0.8% |
| T185/55D18 | 26" | -1.1% |
| T185/55R18 | 26" | -1.1% |
| T185/60D17 | 25.7" | -2.3% |
| T155/80R16 | 25.7" | -2.3% |
| T155/80D16 | 25.7" | -2.3% |
| T155/70D18 | 26.6" | 1.1% |
| T145/90R16 | 26.3" | 0% |
| T145/80R17 | 26.1" | -0.8% |
| T145/70R18 | 26" | -1.1% |
| T135/90D17 | 26.6" | 1.1% |
| T135/90D16 | 25.6" | -2.7% |
| T135/80D18 | 26.5" | 0.8% |
| T125/70R19 | 25.9" | -1.5% |
| T185/60R17 | 25.7" | -2.3% |
P235/50R18 (Rear: P255/45R18)
P235/50R18 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% |
P255/45R18 (Rear: P275/40R19)
P255/45R18 tire has a diameter of 27". These temporary spare tires fit the acceptable tire diameter range of 26.2" to 27.8".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/60R20from $271.36 | 26.9" | -0.4% |
| T145/80D18from $257.05 | 27.1" | 0.4% |
| T155/70R19from $237.96 | 27.6" | 2.2% |
| T155/70R18from $178.60 | 26.6" | -1.5% |
| T165/80R17from $166.85 | 27.4" | 1.5% |
| T135/90R17from $158.19 | 26.6" | -1.5% |
| T135/70R19from $147.99 | 26.5" | -1.9% |
| T145/65R20from $146.43 | 27.4" | 1.5% |
| T135/80R18from $125.96 | 26.5" | -1.9% |
| T165/80D17from $124.93 | 27.4" | 1.5% |
| T145/85R18from $118.73 | 27.7" | 2.6% |
| T155/80D17from $97.90 | 26.8" | -0.7% |
| T155/90D16from $92.99 | 27" | 0% |
| T145/90D16from $88.99 | 26.3" | -2.6% |
| T165/70D18 | 27.1" | 0.4% |
| T155/90R16 | 27" | 0% |
| T155/80R17 | 26.8" | -0.7% |
| T155/70D18 | 26.6" | -1.5% |
| T145/90R17 | 27.3" | 1.1% |
| T145/90R16 | 26.3" | -2.6% |
| T145/90D17 | 27.3" | 1.1% |
| T145/80R18 | 27.1" | 0.4% |
| T135/90D17 | 26.6" | -1.5% |
| T135/80D18 | 26.5" | -1.9% |
| T165/70R18 | 27.1" | 0.4% |
More Cadillac STS 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.