I'd love to know the answer to this. It sounds like a very complicated question. Do electric cars go harder on their brakes because of regenerative braking perhaps?
I was also interested in what is meant by "steering" - here it seems that the main culprit is the weight of the batteries that are putting a lot of stress on the suspension system.
Mix in wetter conditions, and salted roads in winter, and you have a recipe for disaster - the components experience all of the weather, but none of the "cleaning" force of actual braking. Anecdotal evidence, every single electric car owner I personally know has complained about brake rust here in Latvia. Even those with small 50km range plug-in hybrids, when used mainly for daily commuting within electrical range.