SG NO OPTIONS CSL 17950 Miles

[Yanto]

Originally Posted by XPorker

Let me guess, the fact that the majority of cars have reached the end of their 10 year warranty period within the last coupe of years has nothing to do with it at all ?

But let's get this straight, you really think a piece of pressed mild steel just cracks with age ? No kind of continuous stressing resulting in fatigue is required ?

I just look at the facts...

Cars with 15k to 80k miles all driven differently happen to start cracking over a 2 yr (ish) period for the first time. What about the early cars that got hammered in the first 3 years? Were we talking about fooked sub frames in 2006?

But I defer to your expertise......

[nw99]

Just had mine checked . Still like they were when new I was told.

[Yanto]

Ok, for avoidance of doubt. Yes, of course the way the car is driven (and associated stresses) will have an influence. BUT, I don't believe this is the unique cause. There must be an age factor for reasons mentioned.

[MarcM]

Originally Posted by Yanto

Ok, for avoidance of doubt. Yes, of course the way the car is driven (and associated stresses) will have an influence. BUT, I don't believe this is the unique cause. There must be an age factor for reasons mentioned.

Fair play. Was never quite sure the reasons myself; age, use, mileage. I bought mine not giving too much off a shit about the boot floor having been done or not. If it goes I'll fix it!

It's one of those will it? Won't it? I do sometimes think 'what the f#*k is that noise?' but think that reflects our roads and vehicle enthusiast's paranoia I think.

Before I got mine was told boot floor was all clear (which goes for nothing), been at dealership 4 times since with nowt mentioned.

[mattCSLnut]

Originally Posted by nw99

Just had mine checked . Still like they were when new I was told.

Did they (who ever checked it) put that in writing ?

[cslsuperfan]

Originally Posted by MarcM

Fair play. Was never quite sure the reasons myself; age, use, mileage. I bought mine not giving too much off a shit about the boot floor having been done or not. If it goes I'll fix it!

It's one of those will it? Won't it? I do sometimes think 'what the f#*k is that noise?' but think that reflects our roads and vehicle enthusiast's paranoia I think.

Before I got mine was told boot floor was all clear (which goes for nothing), been at dealership 4 times since with nowt mentioned.

There's night and day between technicians across the BMW dealer network.

Mine was checked at Dealer X and given the all clear.

8 weeks later on an Insp1 Gareth @ Elms found subframe issues...

[still no worries]

Low mileage has got to be a good thing regardless of service history surly! (Ok I don't mean no history)

[nw99]

Originally Posted by mattCSLnut

Did they (who ever checked it) put that in writing ?

Yes BMW did and a recent Check by An independent confirmed it .

[Trawler]

Thought I would ask someone who knows a little about the subject of steel & supports.

Hope I repeat this correctly. The problem we are experiencing is related to fatique life not how old the car is. The area in question is being exposed to loading & unloading. The magnitude & frequency will affect the fatique life. So theoretically if the life is 1000 cycles at a given load once this is reached the material will crack. If we expose the car to 900 in its first year & then 10 each year for the next ten years the failure will occur after 11 years. 500 each year then the life is two years. If the loading/unloading is higher or lower it will affect the fatique life exponentially. Interestingly he also said the SMG is also probably contributing to the fatique life. He wanted to see pics of how everything is supported connected so he could give a better explanation.

[Yanto]

Originally Posted by Trawler

Thought I would ask someone who knows a little about the subject of steel & supports.

Hope I repeat this correctly. The problem we are experiencing is related to fatique life not how old the car is. The area in question is being exposed to loading & unloading. The magnitude & frequency will affect the fatique life. So theoretically if the life is 1000 cycles at a given load once this is reached the material will crack. If we expose the car to 900 in its first year & then 10 each year for the next ten years the failure will occur after 11 years. 500 each year then the life is two years. If the loading/unloading is higher or lower it will affect the fatique life exponentially. Interestingly he also said the SMG is also probably contributing to the fatique life. He wanted to see pics of how everything is supported connected so he could give a better explanation.

Do you mean fatigue or are you trying to be all French ?

So am I kinda right ?