2018 BMW 740i Spare Tire
The BMW 740i typically comes equipped with a run-flat tire system, designed to maintain their shape and support the vehicle's weight to allow the driver to continue driving to a safe location even after a puncture. However, due to this system, BMW 740i models usually do not include a traditional spare tire as standard. But some drivers might still seek a spare tire for added security which could be a full-size or a donut, depending on personal preference. The proper spare tire size for a BMW 740i is largely contingent on the model year, with most employing tires such as the P245/50R18 or P245/45R19. It is recommended to confirm with the vehicle's owner manual or a professional to determine the exact size needed for your specific model.
2018 BMW 740i 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 BMW dealership to confirm the correct 2018 BMW 740i 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
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 BMW 740i Spare Tires
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- 2017 BMW 740i Spare Tire
- 2016 BMW 740i Spare Tire
- 2015 BMW 740i Spare Tire
- 2014 BMW 740i Spare Tire
- 2013 BMW 740i Spare Tire
- 2012 BMW 740i Spare Tire
- 2011 BMW 740i Spare Tire
- 2001 BMW 740i Spare Tire
- 2000 BMW 740i Spare Tire
- 1999 BMW 740i Spare Tire
- 1998 BMW 740i Spare Tire
- 1997 BMW 740i Spare Tire
- 1995 BMW 740i Spare Tire
- 1994 BMW 740i Spare Tire
- 1993 BMW 740i Spare Tire
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.