Lips and Drilling?

[UndeniablyT]

Hey All,

Do all front lips require DRILLING into the front bumper? I have a '18 F80 in Avus Blue for reference which didn't come with a performance lip

I have the OEM Diffuser and Splitters coming my way both in CF. Looking to add the CF CS Lip from RW, XPH, or OEM Matte black lip.

[mike@x-ph.com]

We strongly recommend drilling the front lips; it won't last with tape only.

[x.shell]

Don't listen to anyone that says you only need double sided tape. A lot of downforce is generated at highway speeds. I've seen people driving on the road and their lips are all bending and bowing downward. It stays on, but I don't think they know how dumb it looks while they're driving.

I've also seen examples where lips tore off and they just run over it — this is with screws installed. This is why the MPerformance lip comes with a support insert and requires a ridiculous amount of screws drilled into the bumper. The OEM CS and GTS lips come with metal brackets to hard mount the lip to the chassis — the imitations don't.

[bigj505]

I remember when I was a kid…. I had a 98 Honda prelude with a greddy front lip double sided taped on.
Hit a nice water puddle during a storm and it ripped off. I didn't notice it was gone until the next morning

[henrylee]

Would not recommend just double side tape for front lip.

[UndeniablyT]

Definitely will avoid double sided tape for that reason.

I could go check but any pre drilled holes in the bumper for a lip?

[TopJimmy]

Originally Posted by UndeniablyT

Definitely will avoid double sided tape for that reason.

I could go check but any pre drilled holes in the bumper for a lip?

Any good lip will have pilot holes where you need to drill your own holes into your bumper. You always drill the holes in your bumper smaller than the screws, and tighten in by hand just until seated flat. I used rubber washers and short black pan-head screws. If any holes in a carbon fiber lip need to be opened use a dremel and be gentle. A drop of clear nail polish cleans up any hole edge fray.

And STILL use tape, even where the screws go. I used 3M VHB 1/2in or wider. Go heavy, not light. A well taped lip should stay on by itself, but the added protection of screws is needed. Nobody wants to run over their own dislodged lip and hear it rip it off…

Above keeps my Vorsteiner on at 170MPH no probs. Over and over.