Interesting sway bar article from UK.

[X5girl]

Originally Posted by Icer006

If you assume (or hope) that the springs are equal and both springs lower the same amount. There's no way to assume/hope that. Actually, even putting a certain amount of fuel may affect weight distribution.

Yes, but lowering the car in itself does not alter the load on the bars. The assumption here is that if both original coil springs are the same and both new coil springs are the same, then simply changing the ride height will not affect the loads on the bars. Adjustable drop links are as applicable to a stock suspension set up as they are to a modified suspension.

Any change in vehicle weight distribution would alter the pre-load on the bars, but if everything else is unchanged, the ride height will not affect bar pre-load.

Also, as per my previous post, here is a statement from a spherical bearing supplier

Problems
A lot of work, time and money has gone into designing the suspension setup for your car, and while fitting rose joints may have some benefits, there are certainly disadvantages. The argument that they're used on racing cars so they must be better is fundamentally flawed for a road car.
The first disadvantage is the cost and maintenance schedule. Race cars tend to be rebuilt every race, so the fact that rose joints wear quickly is not such a problem. On a road car, particularly with more dirt and grit around, they will wear far too fast, even if rubber boots are used to prevent ingress of water and dirt.


X5Girl, xxx