lump of steel in the boot of my cab

[muzz]

right ive just fitted a set of 17 by 7.5 in alpina repwheels with 215 45 tyers looks great on my 325 cab but im getting tyer rub on right hand side more weight in the car more rubbing i noticed the ride height difference from lhs to rhs went to boot area and noticed a blody heavy lump of steel ive ripped it out and gained 5mm inheight what is this thig is it important duh im stumped little help

[tonyppe]

lol, was it bolted inside the boot? must of weighed 5-10 kgs?

[Globulator]

Aleady discussed in the general chat area - it weighs 23.5kg and is there to reduce scuttle shake, which it does!

[tonyppe]

what is scuttle shake?
is it for when you take off?

[Morat]

BMW installed it to alter the natural frequency of the car away from one which increased vibrations in cabs.
If you take it out you save 23.5kg but you'll get more rattles, I don't know how serious they rattles would be apart from they were serious enough for BMW to put a bloody great lump of metal in the boot.....

[Globulator]

what is scuttle shake?
is it for when you take off?

It's the feeling you get that the back and front of your car are stuck together with a giant spring rather than a chassis, allowing a twisting of the whole car.

You won't notice anything if you only drive on flat roads, as opposed to UK A and B roads which appear to be made out of corrugated tarmac and potholes.

[muzz]

my cab feels like a monkeys been taken of her back dont know why but we do seem to have some realy good smooth roads here in the land of auz also seems to handle a little beter and no more wheel rub even when i tried to botom it out good stuff

[tonyppe]

how much money did u make on the scrap metal u took out?

[muzz]

tony ill keep it handy just in case i need to deep 6 some thing or someone ha ha

[tonyppe]

haha.
now i think about it, it must be why my passenger/left side squats a little lower than the other. i wont bother taking it out tho. ill just stop taking out fat birds.