The other major change vis-à-vis the 406 lay in the front suspension. Gone were the transverse leaf springs that were inadequate to provide effective handling given a higher weight and also the higher speeds which the 407 was capable of; in its place were coil springs.
A notable difference between the 406 and the 407 was the change in their front suspension systems. The earlier model relied on transverse leaf springs, which were insufficient for its higher weight and speed; in contrast, the later model utilized coil springs to enhance handling.