Hi Dave,

Thanks for your comment. This anti-roll bar article has been written to provide an understanding mainly of when an anti-roll bar is working and how it works in terms of generating LLT across an axle and how stiffer roll bars generate more or less LLT.

Our “Adjust and Tune” article covering roll bars is designed to give a more in depth but practical look at how to adjust and tune your anti-roll bar set up and is designed to be informative and practical so that someone track side could look at the article and have the ability to adjust the anti-roll bars to solve an under/oversteer issue without the information becoming too technical.

With regards to the soft suspension set ups we are talking about an extreme situation such as a SUV with no anti-roll bars or an American muscle car with no roll bars. The article is written to appeal to all drivers, some of whom will have extremely soft set ups that are not track focused and therefore will be experiencing excessive roll, so stiffer set up would actually decrease outside tyre loading. As mentioned in the article this is few and far between but needs mentioning regardless. The stiffer “more normal” set up alterations apply to the vast majority of our readers where their car already has a roll bar but they would like to alter the handling.

In light of your comment we will add some further technical information to our article to explain in more detail why the car over/understeers due to increased or decreased LLT across an axle. In short it is due to the increased tyre loading reducing overall axle grip due to multiple tyre characteristics, the main being slip angle data from the tyre.

Many Thanks
Suspension Secrets

Adding downward force to a toed-in wheel and reducting force on the opposite wheel would increase oversteer for stiff or sloppy suspension roll setups…or is something else happening.

Dave