What are you trying to achieve ? There is always a compromise when you make any changes so stiffer ARB's will have downsides as well. The main downside is lateral motion causing 'head toss' for passengers which can be very unpleasant.
Interesting, didn't think about the lateral movement being that harsh. I am basically wanting less wallow, i thought with just uprated ARBs i could solve it, only for spirited driving, not track use. Thank you for input, appreciated.
There will be people on here who can give good advice, but always beware anybody that gives advice without asking what you want to achieve first. A good road setup is very different to a track setup, which is different again from a cosmetic setup (which may well be the worst of all worlds !)
I don't get any lurch on roundabouts with the standard magneride setup. The car's biggest problem is it is heavy so with a non adaptive setup you have to go firm enough to control the weight but that then ruins the ride on UK roads. Colin Chapman had the answer and the Elise and Evora's I have owned completely embarrass the Mustang when it comes to ride and handling.
Useful info for the OP if you also say what you were trying to achieve. For example you may be happy with the downsides of thicker ARB's but he may not. Not having go, but terms like better and bigger impact only mean anything when you define the terms.
This is a really good example of how stiffer ARB's can make things worse. Yes, on a track, they may improve things (although that is with the caveat that you may have more or less understeer / oversteer depending on front / rear ARB balance) and on the road they will make little difference to the ride in general (except lateral motion which can be unpleasant) but can actually make handling 'worse'. Stiffer ARB's don't allow the wheels to flow with the road as well, especially mid corner, where bumps and stiff ARB's can mean less grip and the potential for more trips to the scenery.
