Ford beats BMW to the variable ratio punch?
I just read a review of the 03 T-bird, which indicates that the Bird and the Lincoln LS both come with ZF Servotronic II variable assist/variable ratio steering racks. I remember reading an article in Roundel about variable ratio steering systems, but got the impression that it was still in the future for BMW products (and that it would be an innovation when it came out). Any insight?
Relevant T-bird passage below, from thecarconnection:
"The Thunderbirdís low-speed tuning shocks in the rear were slightly revised to better handle bumps, and its spring rates lowered to LS (read sport sedan) levels. The T-Birdís engineering manager also mentioned its reduced braking effort and more assist at low speed provided by ZFís Servotronic II variable ratio rack-and-pinion system with speed sensitive variable assist that replaced the previous Visteon system.
According to Shanahan, varying both the ratio and the assist provides the precise, linear steering feel that his team sought for both the T-Bird and LS."