2018 Buick Regal Sportback Spare Tire
The Buick Regal Sportback, like many contemporary cars, opts for a tire inflator kit rather than a traditional spare tire to save weight and increase cargo space. The inflator kit includes a tire sealant and an air compressor to temporarily fix a punctured tire until it can be properly replaced. However, if a spare tire is desired, it is available as an optional extra or aftermarket purchase. The specific spare tire size for the Buick Regal Sportback may vary depending on the year and model of the car, but many use a compact temporary spare tire of size T125/70D17.
2018 Buick Regal Sportback 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 Buick dealership to confirm the correct 2018 Buick Regal Sportback spare tire size.
245/40R19
245/40R19 tire has a diameter of 26.7". These temporary spare tires fit the acceptable tire diameter range of 25.9" to 27.5".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/60R20from $271.36 | 26.9" | 0.7% |
| T145/80D18from $257.05 | 27.1" | 1.5% |
| T155/70R18from $178.60 | 26.6" | -0.4% |
| T165/80R17from $166.85 | 27.4" | 2.6% |
| T135/90R17from $158.19 | 26.6" | -0.4% |
| T135/70R19from $147.99 | 26.5" | -0.7% |
| T145/65R20from $146.43 | 27.4" | 2.6% |
| T135/80R18from $125.96 | 26.5" | -0.7% |
| T165/80D17from $124.93 | 27.4" | 2.6% |
| T145/70D18from $118.97 | 26" | -2.6% |
| T155/80D17from $97.90 | 26.8" | 0.4% |
| T155/90D16from $92.99 | 27" | 1.1% |
| T145/90D16from $88.99 | 26.3" | -1.5% |
| T145/80D17from $81.99 | 26.1" | -2.2% |
| T155/80R17 | 26.8" | 0.4% |
| T155/90R16 | 27" | 1.1% |
| T165/70D17 | 26.1" | -2.2% |
| T165/70D18 | 27.1" | 1.5% |
| T165/70R17 | 26.1" | -2.2% |
| T165/70R18 | 27.1" | 1.5% |
| T185/55D18 | 26" | -2.6% |
| T155/70D18 | 26.6" | -0.4% |
| T145/90R17 | 27.3" | 2.2% |
| T145/90R16 | 26.3" | -1.5% |
| T145/90D17 | 27.3" | 2.2% |
| T145/80R18 | 27.1" | 1.5% |
| T145/80R17 | 26.1" | -2.2% |
| T145/70R18 | 26" | -2.6% |
| T135/90D17 | 26.6" | -0.4% |
| T135/80D18 | 26.5" | -0.7% |
| T185/55R18 | 26" | -2.6% |
245/45R18
245/45R18 tire has a diameter of 26.7". These temporary spare tires fit the acceptable tire diameter range of 25.9" to 27.5".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/60R20from $271.36 | 26.9" | 0.7% |
| T145/80D18from $257.05 | 27.1" | 1.5% |
| T155/70R18from $178.60 | 26.6" | -0.4% |
| T165/80R17from $166.85 | 27.4" | 2.6% |
| T135/90R17from $158.19 | 26.6" | -0.4% |
| T135/70R19from $147.99 | 26.5" | -0.7% |
| T145/65R20from $146.43 | 27.4" | 2.6% |
| T135/80R18from $125.96 | 26.5" | -0.7% |
| T165/80D17from $124.93 | 27.4" | 2.6% |
| T145/70D18from $118.97 | 26" | -2.6% |
| T155/80D17from $97.90 | 26.8" | 0.4% |
| T155/90D16from $92.99 | 27" | 1.1% |
| T145/90D16from $88.99 | 26.3" | -1.5% |
| T145/80D17from $81.99 | 26.1" | -2.2% |
| T155/80R17 | 26.8" | 0.4% |
| T155/90R16 | 27" | 1.1% |
| T165/70D17 | 26.1" | -2.2% |
| T165/70D18 | 27.1" | 1.5% |
| T165/70R17 | 26.1" | -2.2% |
| T165/70R18 | 27.1" | 1.5% |
| T185/55D18 | 26" | -2.6% |
| T155/70D18 | 26.6" | -0.4% |
| T145/90R17 | 27.3" | 2.2% |
| T145/90R16 | 26.3" | -1.5% |
| T145/90D17 | 27.3" | 2.2% |
| T145/80R18 | 27.1" | 1.5% |
| T145/80R17 | 26.1" | -2.2% |
| T145/70R18 | 26" | -2.6% |
| T135/90D17 | 26.6" | -0.4% |
| T135/80D18 | 26.5" | -0.7% |
| T185/55R18 | 26" | -2.6% |
P225/55R17
P225/55R17 tire has a diameter of 26.8". These temporary spare tires fit the acceptable tire diameter range of 26" to 27.6".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/60R20from $271.36 | 26.9" | 0.4% |
| T145/80D18from $257.05 | 27.1" | 1.1% |
| T155/70R18from $178.60 | 26.6" | -0.7% |
| T165/80R17from $166.85 | 27.4" | 2.2% |
| T135/90R17from $158.19 | 26.6" | -0.7% |
| T135/70R19from $147.99 | 26.5" | -1.1% |
| T145/65R20from $146.43 | 27.4" | 2.2% |
| T135/80R18from $125.96 | 26.5" | -1.1% |
| T165/80D17from $124.93 | 27.4" | 2.2% |
| T155/80D17from $97.90 | 26.8" | 0% |
| T155/90D16from $92.99 | 27" | 0.7% |
| T145/90D16from $88.99 | 26.3" | -1.9% |
| T145/80D17from $81.99 | 26.1" | -2.6% |
| T165/70R17 | 26.1" | -2.6% |
| T165/70D18 | 27.1" | 1.1% |
| T165/70D17 | 26.1" | -2.6% |
| T155/90R16 | 27" | 0.7% |
| T155/80R17 | 26.8" | 0% |
| T155/70D18 | 26.6" | -0.7% |
| T145/90R17 | 27.3" | 1.9% |
| T145/90R16 | 26.3" | -1.9% |
| T145/90D17 | 27.3" | 1.9% |
| T145/80R18 | 27.1" | 1.1% |
| T145/80R17 | 26.1" | -2.6% |
| T135/90D17 | 26.6" | -0.7% |
| T135/80D18 | 26.5" | -1.1% |
| T165/70R18 | 27.1" | 1.1% |
More Buick Regal Sportback 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.