Originally Posted by d3l0n
umm.. can some one carefully explain to me how the car's suspension is built for these tires. I kinda get it to a certain degree. I guess at a general sense, not too detailed. in the explaination, explain the comparison with a car who's suspension is built for non-rft. (sorrry for the essay question)
It was mentioned above... basically BMW use softer damping rates and bushings, etc. to tame the effects of having a practically rigid side wall that run-flat tires have.
Cars made to run with non-RFT tires will assume a certain level of tire side-wall flex in design and can therefore use stiffer versions of some of the other suspension components without compromising ride quality too much.