Looks like that's been wrapped or painted in a way that makes it look higher ? Think there's some optical illusion going on there, maybe the angle, but it looks like the OEM one.
I wondered that too. When I fitted one to my first MX5 I had to drill the alloy boot lid. I would imagine the Z4 one would be the same as I'm not sure how else it could be securely fitted
I've heard of this Tigerseal stuff, is it very secure when used for things like fitting spoilers and doesn't it make a mess of the paintwork if you want to take the spoiler off for any reason?
its the only spoiler that i would have as it follows the lines of the boot. and tiger seal is great stuff i had my front lip, rear lip and side skirts all put on with that stuff, and it is never coming off.