2018 BMW 640i xDrive Gran Turismo Spare Tire
The BMW 640i xDrive Gran Turismo does not come with a traditional full-size spare tire due to its emphasis on reducing vehicle weight and increasing luggage space. Instead, it is equipped with run-flat tires, which are designed to resist the effects of deflation when punctured, allowing you to continue driving for about 50 miles at a maximum speed of 50 mph, sufficient to get you to a safe area or service station. However, you can opt for a spare tire depending on personal preference or for long-distance travel. The recommended spare tire size for the BMW 640i xDrive Gran Turismo, if you decide to get one, is the same as the standard tire size, which is 245/45R19 for the front and 275/40R19 for the rear. The exact tire measurements might differ based on the vehicle ' s year and specific model.
2018 BMW 640i xDrive Gran Turismo comes with 2 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 640i xDrive Gran Turismo 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% |
More BMW 640i xDrive Gran Turismo 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.