❯ is M340i gearbox the same durability as M3/M4?
| 05-13-2022, 02:27 PM | #1 |
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Major General
 
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is M340i gearbox the same durability as M3/M4?
how much abuse can the gearbox take? i mean if it's the same toughness as the M3 then that's awesome ... but is it?
watching 0-200 pulls i can see the gear ratios are slightly taller on the m340i so they are not identical ... but here's hoping! |
| 05-13-2022, 03:45 PM | #2 |
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Captain
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Drives: 2021 BMW X3 M
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No, they are not the same transmission. The ZF8HP50 in our cars starts to slip right around 600 WTQ. The G80 M3 has a ZF8HP70 which holds more torque.
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| 05-15-2022, 03:17 PM | #3 |
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Second Lieutenant
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The trans in the UK m340i is the HP51 but its the same specs as the 50 i believe. The 50 and 70 in the two part numbers indicate the rated torque, 500nm and 700nm respectively, so the m340i is already at the rated torque of the transmission.
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