[patsgarageonline]

I ordered the OEM Rear Spoiler for my BMW i8 and decided to record the installation process. This is not a cheap spoiler, compared to the front splitters I previously installed. However, it gives it a more completed, but subtle, look.

BMW Retrofit Aero Kit:
https://www.realoem.com/bmw/enUS/sho...36#51629498198

These are some links where I found the parts I used, but you don't have to buy them there.

Rear spoiler: 51629498198
https://www.onlinebmwshop.com/oem-pa...10-51629498198

3M Auto molding tape: 03609
https://www.amazon.com/3M-03609-Scot.../dp/B000BO913C

[Big boi m5]

Cool, but what purpose did you add the spoiler for?

Does it do a set amount downforce and how does this work with other aero pieces? I'm wondering what the goal is? Dial in understeer?

[patsgarageonline]

Originally Posted by SleepingBMW

Cool, but what purpose did you add the spoiler for?

Does it do a set amount downforce and how does this work with other aero pieces? I'm wondering what the goal is? Dial in understeer?

I decided to purchase for a mild aesthetic improvement. I typically do not purchase aftermarket parts to modify the appearance of vehicles but this stood out to me and I decided to purchase it. The spoiler does provide some downforce, as proven by air tunnel tests by BMW, from what I've heard. I don't know how much it affects understeer. I corrected understeer by increasing the front tire width by 30mm and added the spoiler afterward.