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.
BMW M340i models manufactured from 2020 to 2025 have tires with overall diameter ranging from 25.9" to 26.1", allowing the use of a temporary spare tire with a near same diameter as the OEM tire. Tire diameter and wheel diameter clearance have been taken into account for the specific BMW M340i years and trims.
Listed below are compact spare tire sizes that can fit some BMW M340i vehicles based on acceptable tire diameter range of 25.1" to 26.9". Some M340i models may require the use of a traditional full-size tire as a spare. To ensure safe temporary mobility in case of a road emergency, always refer to the vehicle owner's manual for the correct BMW M340i spare tire size designated by vehicle's manufacturer.
| Spare Size | Spare Diameter |
|---|---|
| T155/70R18from $178.60 | 26.6" |
| T155/70D17from $175.43 | 25.6" |
| T155/60R18from $164.19 | 25.3" |
| T135/90R17from $158.19 | 26.6" |
| T135/90R16from $155.20 | 25.6" |
| T135/70R19from $147.99 | 26.5" |
| T155/70R17from $139.76 | 25.6" |
| T135/70D18from $135.05 | 25.5" |
| T135/80R17from $133.66 | 25.5" |
| T135/70R18from $131.66 | 25.5" |
| T135/80R18from $125.96 | 26.5" |
| T145/70D18from $118.97 | 26" |
| T115/95R17from $117.54 | 25.6" |
| T135/80D17from $112.58 | 25.5" |
| T155/80D17from $97.90 | 26.8" |
| T145/90D16from $88.99 | 26.3" |
| T145/80D17from $81.99 | 26.1" |
| T155/70D18 | 26.6" |
| T155/80D16 | 25.7" |
| T155/80R16 | 25.7" |
| T155/80R17 | 26.8" |
| T165/70D17 | 26.1" |
| T165/70R17 | 26.1" |
| T185/55D18 | 26" |
| T185/55R18 | 26" |
| T185/60D17 | 25.7" |
| T145/90R16 | 26.3" |
| T145/80R17 | 26.1" |
| T125/70R19 | 25.9" |
| T135/60D19 | 25.4" |
| T135/60R19 | 25.4" |
| T135/80D18 | 26.5" |
| T135/90D16 | 25.6" |
| T135/90D17 | 26.6" |
| T145/65D18 | 25.4" |
| T145/65R18 | 25.4" |
| T145/70R18 | 26" |
| T185/60R17 | 25.7" |
Spare Tire for BMW M340i
Discover spare tire solutions for your BMW M340i based on model year. Generally, spare tire size has to be within 3% of the overall diameter of the original equipment tire size. BMW M340i tire size can vary depending on the year and trim. Make sure to check the load index and load capacity of the spare tire to ensure that it is capable to safely support your vehicle's weight.
| Vehicle | Recommended Spare |
|---|---|
| 2025 BMW M340i | 37 compact spare tires fit the OEM tire diameter range of 25.3" to 26.9" |
| 2024 BMW M340i | 38 compact spare tires fit the OEM tire diameter range of 25.1" to 26.9" |
| 2023 BMW M340i | 38 compact spare tires fit the OEM tire diameter range of 25.1" to 26.9" |
| 2022 BMW M340i | 38 compact spare tires fit the OEM tire diameter range of 25.1" to 26.9" |
| 2021 BMW M340i | 38 compact spare tires fit the OEM tire diameter range of 25.1" to 26.9" |
| 2020 BMW M340i | 38 compact spare tires fit the OEM tire diameter range of 25.1" to 26.9" |
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.