2018 Mercedes-Benz S450 Spare Tire
The Mercedes-Benz S450 comes equipped with a "run-flat" system on its tires, allowing the vehicle to be driven for a limited distance at a reduced speed even with a punctured tire. Thus, a factory-equipped full-size spare wheel or a space-saver tire is not typically included on the S450 model. However, if a driver prefers to carry a spare tire, the make's tire measurement usually stands at around 245/50R18, which is equivalent to the standard tire mounted on the S450. The exact size will depend on the model year and any tire and wheel packages chosen by the previous owner. However, it's always essential to check the owner's manual or consult with a Mercedes-Benz dealership or tire professional for precise spare tire guidelines and requirements.
2018 Mercedes-Benz S450 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 Mercedes-Benz dealership to confirm the correct 2018 Mercedes-Benz S450 spare tire size.
245/40R20 (Rear: 275/35R20)
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 (Rear: 275/40R19)
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% |
245/50R18
245/50R18 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 Mercedes-Benz S450 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.