|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Search | Today's Posts | Mark Forums Read |
|
BMW 3-Series (E90 E92) Forum
>
is X-Drive full time or on-demand AWD?
|
|
06-11-2023, 04:59 AM | #1 |
Major General
5417
Rep 5,176
Posts |
is X-Drive full time or on-demand AWD?
just wondering if anyone knows?
on the protool front wheel torque monitor it appears it's virtually full time RWD but that doesn't seem right ... |
06-11-2023, 08:23 AM | #2 | |||||
Lieutenant General
6550
Rep 15,857
Posts |
Quote:
As an example, BMW clearly state for the M240i; Quote:
Quote:
Examples for the G12 or G30, where BMW state; G12 material: Quote:
Quote:
|
|||||
Appreciate
0
|
06-11-2023, 09:39 AM | #3 |
Brigadier General
6459
Rep 4,642
Posts |
Pretty sure the xdrive set up in the G20 is 40/60 (front/rear) split while under standard load. Slip detection sends up to 85% of power to the rear, but never 100%.
__________________
Current: 2024 BMW M3 Competition xDrive | 2022 Audi Q7
Gone: 2022 Audi RS5 | 2020 BMW M340i | 2019 Audi RS5 |
Appreciate
0
|
06-11-2023, 10:42 AM | #4 | |
Lieutenant General
6550
Rep 15,857
Posts |
Quote:
BMW detail a 50:50 ratio (with the clutch fully locked up), in many of the latest technical details. Rather than 40:60 of previous setups. With 100% torque available to the rear wheels when the transfer clutch is open. A theoretical 100% of 'available torque' to the front axle in slip conditions. |
|
Appreciate
0
|
06-11-2023, 02:06 PM | #5 | |
Brigadier General
6459
Rep 4,642
Posts |
Quote:
Anyway, my point was to refute a previous comment that the M340i xDrive is RWD unless it detects slip (basically the opposite of a FWD AWD system). Unless something has changed?
__________________
Current: 2024 BMW M3 Competition xDrive | 2022 Audi Q7
Gone: 2022 Audi RS5 | 2020 BMW M340i | 2019 Audi RS5 |
|
Appreciate
0
|
06-12-2023, 01:37 PM | #6 |
Brigadier General
2519
Rep 4,381
Posts |
The M xdrive version may differ from versions in other models.
In the M xdrive version (fitted to F90 M5, G8x M3/4 etc) the car is in RWD unless certain control parameters are exceeded. The principle one being slip detected at the rear wheels when excess torque is sent to the front wheels. Others include slip at the front wheels, yaw and steering angle. |
Appreciate
0
|
Bookmarks |
Thread Tools | Search this Thread |
|
|