2025 Porsche 718 Boxster Spare Tire
The Porsche 718 Boxster, like many modern high-performance vehicles, does not come with a conventional spare tire. Instead, it is equipped with a tire repair kit that includes an air compressor and tire sealant, designed to provide a temporary repair and get the driver to the nearest tire repair center. This is mainly due to weight reduction, saving space and designing the vehicle with optimal performance in mind. For those who insist on having a spare, it needs to be noted that there's no specific storage space for it in the vehicle and the size will be dependent on the standard tire size of the Porsche 718 Boxster, which is 235/45R18 for the front and 265/45R18 for the rear. In addition, it's always recommended to contact the vehicle's manufacturer or professional automotive technician for accurate information.
2025 Porsche 718 Boxster 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 Porsche dealership to confirm the correct 2025 Porsche 718 Boxster spare tire size.
235/35R20 (Rear: 265/35R20)
235/35R20 tire has a diameter of 26.5". These temporary spare tires fit the acceptable tire diameter range of 25.7" to 27.3".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/60R20from $271.36 | 26.9" | 1.5% |
| T145/80D18from $257.05 | 27.1" | 2.3% |
| T155/70R18from $178.60 | 26.6" | 0.4% |
| T135/90R17from $158.19 | 26.6" | 0.4% |
| T135/70R19from $147.99 | 26.5" | 0% |
| T135/80R18from $125.96 | 26.5" | 0% |
| T145/70D18from $118.97 | 26" | -1.9% |
| T155/80D17from $97.90 | 26.8" | 1.1% |
| T155/90D16from $92.99 | 27" | 1.9% |
| T145/90D16from $88.99 | 26.3" | -0.8% |
| T145/80D17from $81.99 | 26.1" | -1.5% |
| T155/90R16 | 27" | 1.9% |
| T165/70D17 | 26.1" | -1.5% |
| T165/70D18 | 27.1" | 2.3% |
| T165/70R17 | 26.1" | -1.5% |
| T165/70R18 | 27.1" | 2.3% |
| T185/55D18 | 26" | -1.9% |
| T125/70R19 | 25.9" | -2.3% |
| T155/80R17 | 26.8" | 1.1% |
| T155/70D18 | 26.6" | 0.4% |
| T145/90R16 | 26.3" | -0.8% |
| T145/80R18 | 27.1" | 2.3% |
| T145/80R17 | 26.1" | -1.5% |
| T145/70R18 | 26" | -1.9% |
| T135/90D17 | 26.6" | 0.4% |
| T135/80D18 | 26.5" | 0% |
| T185/55R18 | 26" | -1.9% |
235/40R19 (Rear: 265/40R19)
235/40R19 tire has a diameter of 26.4". These temporary spare tires fit the acceptable tire diameter range of 25.6" to 27.2".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T145/60R20from $271.36 | 26.9" | 1.9% |
| T145/80D18from $257.05 | 27.1" | 2.7% |
| T155/70R18from $178.60 | 26.6" | 0.8% |
| T135/90R17from $158.19 | 26.6" | 0.8% |
| T135/70R19from $147.99 | 26.5" | 0.4% |
| T135/80R18from $125.96 | 26.5" | 0.4% |
| T145/70D18from $118.97 | 26" | -1.5% |
| T155/80D17from $97.90 | 26.8" | 1.5% |
| T155/90D16from $92.99 | 27" | 2.3% |
| T145/90D16from $88.99 | 26.3" | -0.4% |
| T145/80D17from $81.99 | 26.1" | -1.1% |
| T155/90R16 | 27" | 2.3% |
| T165/70D17 | 26.1" | -1.1% |
| T165/70D18 | 27.1" | 2.7% |
| T165/70R17 | 26.1" | -1.1% |
| T165/70R18 | 27.1" | 2.7% |
| T185/55D18 | 26" | -1.5% |
| T185/55R18 | 26" | -1.5% |
| T185/60D17 | 25.7" | -2.7% |
| T125/70R19 | 25.9" | -1.9% |
| T155/80R17 | 26.8" | 1.5% |
| T155/80R16 | 25.7" | -2.7% |
| T135/80D18 | 26.5" | 0.4% |
| T135/90D17 | 26.6" | 0.8% |
| T145/70R18 | 26" | -1.5% |
| T145/80R17 | 26.1" | -1.1% |
| T145/80R18 | 27.1" | 2.7% |
| T145/90R16 | 26.3" | -0.4% |
| T155/70D18 | 26.6" | 0.8% |
| T155/80D16 | 25.7" | -2.7% |
| T185/60R17 | 25.7" | -2.7% |
235/45R18 (Rear: 265/45R18)
235/45R18 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% |
More Porsche 718 Boxster 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.