We’ve been developing our Front Race Splitter for a while now and it’s proven to provide a significant amount of down force in the front however without a wing, it really made the car unbalanced. A few months ago I was at Willow Springs for Round 3 of Bimmer Challenge and I took a nasty spin on turn 1 which is a high speed left hand turn that requires quite a bit of grip to throttle out. At the time I wasn’t running a wing, but only our full front aero program and I found out how unbalanced the car was – the rough way. That’s when I called my buddy Amir for the RS Future LM Wing to get the car balanced and make my car look a lot more “racecar.” In this review, I will demonstrate how drastic the change is when going from unbalanced no aero to a properly balanced car with aero. I have some entertaining footage for y’all.

Front Splitter and No Wing

I actually ran without the wing intentionally so I can write this article to support my claim. Yeah right. I under estimated the effect of what a wing does for you especially on a track like Willow Springs where I’m hitting 140+ MPH on the front straight then hard braking into a long, fast and cambered turn 1. This turn transfers a lot of the weight to the front and so the rear has a tendency to slide around. It doesn’t help that the front aero was there to magnify the weight transfer.

My entry speed and coasting speed around turn 1 was the same as always and I wasn’t too hard on the throttle when it spun. This run was actually in the first session and 3rd lap where I finally had a clear track to run it hot. Tires were warmed up. As I entered turn 1 I settled the car for the apex and slowly modulated the pedal to carry 50% throttle around the apex and before I even throttled to exit, the rear slid out. I tried to correct it but it just snapped on me forcing me to go over and up turn 1 and into the dirt. I’m glad I didn’t hit anything while I was sideways in the dirt. In the gif below, notice how quickly the rear gives away even with a cambered bank.

No Wing vs Wing

So let’s continue the comparison, but this time without a spin. I ran Auto Club Speedway with a very similar setup, but once without a wing and most recently with a wing. I have video to compare the two results. Both setups are on 275/35/18 Nitto NT01 tires with one-way coilovers. Now this isn’t an apples to apples comparison because the biggest moving variable here is my driver skill. I’ve gained more track knowledge (and I guess balls) to drive faster around the track for my 2019 PB with the wing, but you can still see the maximum speed differences around parts of the track.

Most importantly, we’ll look at the speeds on the front straight and the long NASCAR bank. ACS T1 and T2 requires a lot of down force to really go fast and that’s where the wing really shines. The PB I set in 2018 was 1:56.784 and in 2019 I added the wing and did a 1:52.887. That’s about a 4 second difference!

1:56.784

1:52.887

What’s surprising here is that my car reached 140 mph on the front straight with the wing. Something a lot of people don’t account for when adding a wing is the extra drag that it produces. Although more down force is produced, you have to sacrifice speed. In the most recent PB lap I do get a better exit speed than the 2018 PB, however it seems like I only reach around 135 mph tops when looking at all my laps. Without getting too granular, it’s nice to know that the RS Future LM Wing, as big as it is and as much down force it produces, still allows me to reach higher speeds. The chart below is way too fancy for what I’m trying to show, but data shows my speed around T1 and T2.

  • T1/T2 average speed: ~117 mph without wing; ~124 mph with wing
  • Top speed front straight: 134 mph without wing; 140 mph with wing

The Future is Now

Okay so let’s talk about the quality of this wing. The RS Future LM Wing, including the endplates, is all 2×2 carbon fiber weave and weighs a total of 7.1 lbs! (Scale shows 7 lb 2.5 oz) The uprights are made of solid aluminum which puts the total weight of the entire LM Wing package to just over 11 lbs for a 67″ wing. It’s very very light!

The install was straightforward. As all (proper) uprights require, I had to cut small parts of the underside of the trunk to fit the base plates. We drilled two holes on each side of the trunk to mount the top plate and once that was set, the uprights bolted right on.

A wing that not only works well, but also looks really freaking good
  • Quality
  • Value
  • Performance
5

Summary

So yeah, 5-stars all around. I usually don’t like to leave 5 stars for everything, but the RS Future LM Wing is just a masterpiece built by one of the hardest working dudes in the industry, Amir Bentatou. The quality of the carbon fiber and laser cut uprights will make you drool, the entire product is super light, it creates a lot of down force with very little drag and the value is really good for the money. If you got to the very end of this article, good job because he’s doing a special early adopter pricing of $1,395 or $1,195 for a chassis mounted option that does not come with wing stands. So hurry up and contact Amir for yours!