daviddc
Member
When aligning front wheels, caster is an important setting that can make any car feel wobbly and unstable. Setting the caster to a positive angle stiffens steering and encourages the steering wheel to find center (think the front wheels on shopping carts trailing behind the as you push the cart - they always find center). Setting the caster angle back makes steering very light and soft. If it is too far back, the car will float side to side (think the front wheels on a shopping cart pointed the wrong way). I would ask for an alignment report and have them show you the actual caster angles; compare to factory specifications which they must have. Good luck. My P90D is rock solid at any speed up to 85mph which is my max so far.