I am currently working for a Touring Car Team . I have modified the front suspension geometry . Made the roll moment lesser and increased the Roll stiffness . Driver complained that the steering effort has increased considerably in the corners . 1.How does increased roll stiffness increase steering effort ? Does it have anything to do with the lateral load due to diff geometries pushing the tire down or giving it a more of a tire wall deformation effect ? 2.What are the methods to reduce steering effort other than a.Reducing the scrub radius . b.Increasing the knuckle moment (very difficult as it changes the steering geometry) . c. Simply giving him a bigger steering wheel .