09-25-2020, 04:42 AM | #1 |
Banned
60
Rep 114
Posts |
M8 axle exploded
First of all
yes not broken down. it exploded at 1300 miles before i start let me just list the things i have on the car F92 Comp front tire 285/35/20 rear tire 305/30/20 Intake H&R Spring Exhaust NO TUNE changed my tires and wheels over the weekend. i was driving maybe about 40-50 mph and i started feeling something shaking and all of sudden BOOM!!! i hear something blow up and i had to pull over to the side. i dont know if im tripping or bmw is f*ked up. but bmw is denying the warrenty to replace the axle i dont know what to do at this point. |
09-25-2020, 06:47 AM | #2 |
Captain
794
Rep 964
Posts
Drives: G87 M2, G20 330d, Brabus Smart
Join Date: Mar 2013
Location: Berlin
|
Wow. Looks similar to when my output shaft broke on my F80 M3, although that was launching it at a drag strip.
I'm not familiar with stock M8 tire sizes, and don't know what wheels you have on the car. Perhaps if they're not the same overall diameter it might be a reason for BMW to deny the claim. Either way, BMW has to prove something YOU did was the cause for the axle to fail. What did the dealer say? Usually they are your go between for these matters. If they've already taken it to BMW and it's an official NO from them, I'd hand it to your lawyer. Should be an easily remedied issue, if you didn't do anything to void your warranty. Best of luck!
__________________
@DBV_
Current: '23 G87 M2 6MT / '21 G20 330d / '18 Brabus Smart Gone: '21 G05 X5 M50d / '18 MB C63s (632hp) / '16 F80 M3 6MT (570hp) / '09 F01 750i / '16 Abarth 595 Competizione (202hp) |
Appreciate
1
RJC-11339.50 |
09-25-2020, 12:41 PM | #3 |
Lieutenant Colonel
1340
Rep 1,764
Posts |
Wow, reminds me of the old days when hard launching 930's turbos (all manuals then) and the CV joints would break...
What is BMW's rationale for not covering?
__________________
2019 M850i xDrive Coupe (06/19 Production)
Mineral White/Black, HP Cooling/Tire/M-Technology Pkg/Extended Shadow/Etc., Anthracite Headliner, Carbon Roof, DAx2, Display Key, Various Accs'. Topic permitting, I try to be objective as possible |
Appreciate
0
|
09-25-2020, 01:57 PM | #4 | |
Banned
60
Rep 114
Posts |
BMW says there's a reason why car is designed in that way. Yes it has been taken to BMW and it was official f*k off or pay me 4500 to fix.
Quote:
|
|
Appreciate
0
|
09-25-2020, 06:46 PM | #5 | ||
Brigadier General
4438
Rep 4,109
Posts |
Quote:
With that setup, it's a 0.8" greater variance relative to the stock front <-> rear circumference. It also flips where the greater circumference wheels are: stock, it's the rears; with this setup, the fronts have the larger circumference. I've no idea if that matters. @OP: did you verify the drivetrain could tolerate this? For reference, I run 285/35/20 front (same as OP) and 295/35/20 rear--14,000 miles, no issues. Last edited by limeypride; 09-25-2020 at 06:56 PM.. |
||
Appreciate
0
|
09-25-2020, 07:59 PM | #6 |
Lieutenant Colonel
1340
Rep 1,764
Posts |
I can't see how slightly/moderately larger rear tires would cause this issue or void the warranty.
__________________
2019 M850i xDrive Coupe (06/19 Production)
Mineral White/Black, HP Cooling/Tire/M-Technology Pkg/Extended Shadow/Etc., Anthracite Headliner, Carbon Roof, DAx2, Display Key, Various Accs'. Topic permitting, I try to be objective as possible |
Appreciate
0
|
09-25-2020, 09:00 PM | #7 |
Colonel
1327
Rep 2,357
Posts |
Just checking this is one of the rear axles coming out of the diff, not the driveshaft that runs from the back of the trans to the diff?
__________________
SCOTT26 "So as an admirer of the M5 and a potential customer of an M5 Touring. I would run naked around the streets of Garching if they were to offer one."
|
Appreciate
0
|
09-25-2020, 10:18 PM | #8 |
///M Fan
1661
Rep 1,491
Posts |
If he is running different wheels with different offsets could put a lot of stress on the outer wheel and essentially a bending motion on the driveshafts but that would have to be a lot wider than .8 inch I would think. Similar risk with wheel spacers. I had larger wheels on my m6 but they were identical to comp package size and HRE made them with no issues. I have wider Vossen wheels on my x3m rear but the offsets are adjusted to keep track width the same.
Noushy
__________________
2019 BMW X5 50i Mineral White/Tartufo all options including M Sport
2022 Porsche 911 C4S Silver/Brown 2023 BMW iX M60 Black Sapphire/Amido, Titanium Bronze trim/22 2023 Audi RS6 Avant Daytona Gray/Black 2024 BMW X5M Comp Brooklyn Gray/Taruma Brown, Titanium Exhaust on order |
Appreciate
0
|
09-25-2020, 10:59 PM | #9 | |
Lieutenant Colonel
1340
Rep 1,764
Posts |
Quote:
__________________
2019 M850i xDrive Coupe (06/19 Production)
Mineral White/Black, HP Cooling/Tire/M-Technology Pkg/Extended Shadow/Etc., Anthracite Headliner, Carbon Roof, DAx2, Display Key, Various Accs'. Topic permitting, I try to be objective as possible |
|
Appreciate
0
|
09-26-2020, 05:21 PM | #10 | |
Banned
60
Rep 114
Posts |
Quote:
|
|
Appreciate
0
|
09-26-2020, 05:32 PM | #12 | |
Banned
60
Rep 114
Posts |
Quote:
20 x 10 + 25 PS4S 285/35/20 BBS CI-R 0401 Rear 20 x 10.5 +35 PS4S 305/30/20 i was told to put +10cm spacer in rear because it wont clear, but i found out it actually clears so didnt installed it. what i dont understand is why front? |
|
Appreciate
0
|
09-26-2020, 05:49 PM | #14 |
Lieutenant Colonel
1138
Rep 1,823
Posts |
The overall diameter of the stock setup is 27.6 front and 27.9 rear
The overall diameter of the setup you are running is 27.9 front and 27.2 rear. That seems, especially in rear, enough off to affect the drivetrain I'm not at all saying it's your fault actually seems unrelated. I would have expected some kind of drivetrain malfunction with the diameters being off quite a bit from stock
__________________
2024 Porsche 911 GTS Cabriolet
|
Appreciate
0
|
09-26-2020, 06:10 PM | #15 |
///M Fan
1661
Rep 1,491
Posts |
Spoke with my tech who is one of the best in the business and a former racecar mech in Nascar says widening the track and weight puts more stress on the ball joints and suspension parts and those can fail and then take out everything else. This includes the hub. He says the higher the speed and load the more likely. But he doesn't think the ops mods are significant enough to do it. He said with really wild reverse barrel setups and spacers yes.
Noushy
__________________
2019 BMW X5 50i Mineral White/Tartufo all options including M Sport
2022 Porsche 911 C4S Silver/Brown 2023 BMW iX M60 Black Sapphire/Amido, Titanium Bronze trim/22 2023 Audi RS6 Avant Daytona Gray/Black 2024 BMW X5M Comp Brooklyn Gray/Taruma Brown, Titanium Exhaust on order |
Appreciate
0
|
09-26-2020, 06:47 PM | #16 |
Lieutenant Colonel
1340
Rep 1,764
Posts |
Think of the countless people that increase the size of their wheels and tires far larger than what he did proportionately and not on uber engineered cars like an M8 Comp and never have an issue like this, especially after just a few hours or so. It's either simply a bad part (it happens) or perhaps there's more to the story...
__________________
2019 M850i xDrive Coupe (06/19 Production)
Mineral White/Black, HP Cooling/Tire/M-Technology Pkg/Extended Shadow/Etc., Anthracite Headliner, Carbon Roof, DAx2, Display Key, Various Accs'. Topic permitting, I try to be objective as possible |
Appreciate
1
LSM1137.50 |
09-26-2020, 06:50 PM | #17 |
Lieutenant Colonel
1340
Rep 1,764
Posts |
There you go, but I'm not quite sure how a spring would cause this, did they explain?
__________________
2019 M850i xDrive Coupe (06/19 Production)
Mineral White/Black, HP Cooling/Tire/M-Technology Pkg/Extended Shadow/Etc., Anthracite Headliner, Carbon Roof, DAx2, Display Key, Various Accs'. Topic permitting, I try to be objective as possible |
Appreciate
0
|
09-26-2020, 06:54 PM | #18 | |
///M Fan
1661
Rep 1,491
Posts |
Quote:
Noushy
__________________
2019 BMW X5 50i Mineral White/Tartufo all options including M Sport
2022 Porsche 911 C4S Silver/Brown 2023 BMW iX M60 Black Sapphire/Amido, Titanium Bronze trim/22 2023 Audi RS6 Avant Daytona Gray/Black 2024 BMW X5M Comp Brooklyn Gray/Taruma Brown, Titanium Exhaust on order |
|
Appreciate
0
|
09-26-2020, 07:04 PM | #19 |
Lieutenant Colonel
1340
Rep 1,764
Posts |
Many marques/vehicles offer larger wheels and tires as a factory option and there's no changes to beef up driveline components. He also wasn't tracking the car just driving 40-50 mph according to the OP. If I were the OP I would insist BMW to put something in writing explaining the exact reason the spring/s caused their driveline part to disintegrate at 40-50 mph of normal driving. I would then send that to HR for their take.
EDIT: I have been very vocal here nd on other forums to avoid modifications without prior blessings...
__________________
2019 M850i xDrive Coupe (06/19 Production)
Mineral White/Black, HP Cooling/Tire/M-Technology Pkg/Extended Shadow/Etc., Anthracite Headliner, Carbon Roof, DAx2, Display Key, Various Accs'. Topic permitting, I try to be objective as possible |
Appreciate
1
debdoub77.50 |
09-26-2020, 09:03 PM | #20 | |
Lieutenant Colonel
1138
Rep 1,823
Posts |
Quote:
I'm not referring to the width just the change in the diameter of the wheels vs what he has on the car "The total diameter of your tire and wheels needs to be the same as your original equipment tires. If you vary from the total diameter by more than three per cent, you could be risking problems with your vehicle's computer, braking system, transmission and mileage."
__________________
2024 Porsche 911 GTS Cabriolet
|
|
Appreciate
1
RJC-11339.50 |
09-26-2020, 09:11 PM | #21 | |
Lieutenant Colonel
1340
Rep 1,764
Posts |
Quote:
__________________
2019 M850i xDrive Coupe (06/19 Production)
Mineral White/Black, HP Cooling/Tire/M-Technology Pkg/Extended Shadow/Etc., Anthracite Headliner, Carbon Roof, DAx2, Display Key, Various Accs'. Topic permitting, I try to be objective as possible Last edited by RJC-1; 09-26-2020 at 09:16 PM.. |
|
Appreciate
1
LSM1137.50 |
09-26-2020, 09:16 PM | #22 | ||
Lieutenant Colonel
1138
Rep 1,823
Posts |
Quote:
Either way hope OP gets a positive resolution
__________________
2024 Porsche 911 GTS Cabriolet
|
||
Appreciate
0
|
Post Reply |
Bookmarks |
|
|