BMW 340i tire pressures recommendations and sizes
| Tire Size | Position | Pressure (Psi) |
|---|---|---|
| 225/45R18 91Y | Front | 32 |
| 225/45R18 91Y | Rear | 38 |
| 225/45R18 91Y | Front | 32 |
| 255/40R18 95Y | Rear | 35 |
| 225/35R20/XL 90Y | Front | 38 |
| 255/30R20/XL 92Y | Rear | 44 |
| 225/45R18 91V | Front | 32 |
| 225/45R18 91V | Rear | 38 |
| 225/45ZR18/XL 95(Y) | Front | 32 |
| 255/40ZR18 95(Y) | Rear | 35 |
| 225/40R19 89Y | Front | 35 |
| 255/35R19 92Y | Rear | 38 |
| 225/45ZR18/XL 95(Y) | Front | 32 |
| 255/40ZR18/XL 99(Y) | Rear | 35 |
Legal Mentions
The load and/or speed ratings displayed may differ slightly from the original size specified on the vehicle label. As a qualified professional, your tire dealer will be able to advise you in :
1. Informing you if the load and/or speed rating of the replacement tires is different from the original tires.
2. Determining whether the tire pressure should be adjusted for the proposed alternative size
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