Tire wear is a matter of friction. Higher weight, higher friction, thus more wear. In this isolated instance, electrical cars are likely to be worse off than regular cars due to generally higher weight. Perhaps this is offset by regenerative breaking systems though. I'm sure you could make that argument on other parts of the EV as well.
Outside of isolated areas like that, I would be seriously surprised if electrical cars comes worse off than gasoline cars on the whole. There has been some talk about CO2 emissions made when making hydro electric dams, for instance, but then there's also CO2 emissions when making oil platforms, and so on, so IMHO those kinds of discussions quickly become very theoretical. Either way, I'm sure EV's are better off in terms of local emissions, meaning that they reduce local smog, and so on.
On the other hand, EV's can very well run on coal, if that's how your local electricity is produced. In that case, how well EV's do environmentally speaking is due to the total effort made by society. For that reason I'd love to see a comparison of gasoline and diesel versus coal. Which one is the cleanest?
AFAIK there are some real issues with the way lithium is mined for the batteries, however, that doesn't strictly involve emissions. So there are many pros and cons in the debate on electric vs gas cars that aren't obvious to the casual on-looker.
I don't have a particular horse in this race myself, but I do note that those who do, tend to offer arguments that are more strongly coloured by their preference.
Personally environmental safety isn't the only deciding factor. There's also such things as cost and reach. And I don't just mean how many miles a car can run on one tank, but also its longevity. On the whole it seems to me that EV's have a higher capital cost (up front cost), that might not make up for the savings you make by running it.
On the whole it seems to me that gasoline cars have far better overall longevity than EV's, with the offset that EV's are cheaper to run, though with slightly more hassle in the "refuelling" department. For me personally, winter cold is an issue, since it severely affects battery capacity. On the other hand, those Teslas do look pretty cool.