M performance lip+spoiler?

[tszene]

I feel like the car is a bit wobbly at speeds over 130mls/hr, anyone noticed a significant difference with any of the front lip+spoiler combos out there?
Bmw claims more downforce with the performance parts, but wanted to see if anyone can vouch for that. Are there better setups?
Thanks for all the feedback.
Tszene

[apexit]

I can vouch for the more downforce, whether or not it's noticable i dunno. I had mine and the center support ended up coming lose. At highway speeds the lip would scrape on flat road.

[Jimjamz]

I had the splitters for over 8 months and last month got the front lip spoiler added with a rear diffuser. I did think it seemed more stable at speed but could be imagining it. Having driven a M3 and M6 on the track, I noticed the M6 seemed more stable at high speed and less twitchy on a long straight with crosswinds. The mods seemed to bring more of that feel to the M3.

[tszene]

Awesome, thanks for the feedback.

[JNoSol]

Originally Posted by Jimjamz

I had the splitters for over 8 months and last month got the front lip spoiler added with a rear diffuser. I did think it seemed more stable at speed but could be imagining it. Having driven a M3 and M6 on the track, I noticed the M6 seemed more stable at high speed and less twitchy on a long straight with crosswinds. The mods seemed to bring more of that feel to the M3.

The M6 is heavier and has longer wheel base, it's naturally more stable at high speed. Try going 140+ with an S2000 (shorter wheel base and light), it is scary as hell. In contrast, going 150+ in a 750Li is very smooth.