2020 BMW M340i Spare Tire
The BMW M340i does not traditionally come with a spare tire as the automaker opts for run-flat tires that can continue performing even after a puncture. These specialized tires can typically traverse an additional 50-100 miles at a reduced speed after getting punctured. However, for those insisting on a spare tire, the size would largely depend on the vehicle's original tire size. For the M340i, the original tire size is usually 225/45R18 for the front and 255/40R18 for the rear. Therefore, a compact spare of a similar roll diameter is ideal to not interfere with the vehicle's performance. However, individuals should consult with a BMW dealership or tire specialist to ensure they procure a spare tire suitable for their specific model. Lastly, it's worth noting that carrying a spare tire might necessitate a retrofit kit given the M340i do not come with dedicated space for one.
2020 BMW M340i 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 2020 BMW M340i spare tire size.
225/40R19
225/40R19 tire has a diameter of 26.1". These temporary spare tires fit the acceptable tire diameter range of 25.3" to 26.9".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T155/70R18from $178.60 | 26.6" | 1.9% |
| T155/70D17from $175.43 | 25.6" | -1.9% |
| T135/90R17from $158.19 | 26.6" | 1.9% |
| T135/90R16from $155.20 | 25.6" | -1.9% |
| T135/70R19from $147.99 | 26.5" | 1.5% |
| T155/70R17from $139.76 | 25.6" | -1.9% |
| T135/70D18from $135.05 | 25.5" | -2.3% |
| T135/80R17from $133.66 | 25.5" | -2.3% |
| T135/70R18from $131.66 | 25.5" | -2.3% |
| T135/80R18from $125.96 | 26.5" | 1.5% |
| T145/70D18from $118.97 | 26" | -0.4% |
| T115/95R17from $117.54 | 25.6" | -1.9% |
| T135/80D17from $112.58 | 25.5" | -2.3% |
| T155/80D17from $97.90 | 26.8" | 2.7% |
| T145/90D16from $88.99 | 26.3" | 0.8% |
| T145/80D17from $81.99 | 26.1" | 0% |
| T155/70D18 | 26.6" | 1.9% |
| T155/80D16 | 25.7" | -1.5% |
| T155/80R16 | 25.7" | -1.5% |
| T155/80R17 | 26.8" | 2.7% |
| T165/70D17 | 26.1" | 0% |
| T165/70R17 | 26.1" | 0% |
| T185/55D18 | 26" | -0.4% |
| T185/55R18 | 26" | -0.4% |
| T185/60D17 | 25.7" | -1.5% |
| T145/90R16 | 26.3" | 0.8% |
| T145/80R17 | 26.1" | 0% |
| T125/70R19 | 25.9" | -0.8% |
| T135/60D19 | 25.4" | -2.7% |
| T135/60R19 | 25.4" | -2.7% |
| T135/80D18 | 26.5" | 1.5% |
| T135/90D16 | 25.6" | -1.9% |
| T135/90D17 | 26.6" | 1.9% |
| T145/65D18 | 25.4" | -2.7% |
| T145/65R18 | 25.4" | -2.7% |
| T145/70R18 | 26" | -0.4% |
| T185/60R17 | 25.7" | -1.5% |
225/45R18
225/45R18 tire has a diameter of 25.9". These temporary spare tires fit the acceptable tire diameter range of 25.1" to 26.7".
| Spare Size | Spare Diameter | Diameter Differential |
|---|---|---|
| T155/70R18from $178.60 | 26.6" | 2.7% |
| T155/70D17from $175.43 | 25.6" | -1.2% |
| T155/60R18from $164.19 | 25.3" | -2.3% |
| T135/90R17from $158.19 | 26.6" | 2.7% |
| T135/90R16from $155.20 | 25.6" | -1.2% |
| T135/70R19from $147.99 | 26.5" | 2.3% |
| T155/70R17from $139.76 | 25.6" | -1.2% |
| T135/70D18from $135.05 | 25.5" | -1.5% |
| T135/80R17from $133.66 | 25.5" | -1.5% |
| T135/70R18from $131.66 | 25.5" | -1.5% |
| T135/80R18from $125.96 | 26.5" | 2.3% |
| T145/70D18from $118.97 | 26" | 0.4% |
| T115/95R17from $117.54 | 25.6" | -1.2% |
| T135/80D17from $112.58 | 25.5" | -1.5% |
| T145/90D16from $88.99 | 26.3" | 1.5% |
| T145/80D17from $81.99 | 26.1" | 0.8% |
| T155/70D18 | 26.6" | 2.7% |
| T155/80D16 | 25.7" | -0.8% |
| T155/80R16 | 25.7" | -0.8% |
| T165/70D17 | 26.1" | 0.8% |
| T165/70R17 | 26.1" | 0.8% |
| T185/55D18 | 26" | 0.4% |
| T185/55R18 | 26" | 0.4% |
| T185/60D17 | 25.7" | -0.8% |
| T145/90R16 | 26.3" | 1.5% |
| T145/80R17 | 26.1" | 0.8% |
| T145/70R18 | 26" | 0.4% |
| T125/70R19 | 25.9" | 0% |
| T135/60D19 | 25.4" | -1.9% |
| T135/60R19 | 25.4" | -1.9% |
| T135/80D18 | 26.5" | 2.3% |
| T135/90D16 | 25.6" | -1.2% |
| T135/90D17 | 26.6" | 2.7% |
| T145/65D18 | 25.4" | -1.9% |
| T145/65R18 | 25.4" | -1.9% |
| T185/60R17 | 25.7" | -0.8% |
More BMW M340i 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.