Holes drilled in back bumper?

[charltjr]

I've seen a few track day Clios now with holes drilled in the back bumper, usually in the centre of the bumper in a row of five or six, diameter probably about an inch and a half to two inches.

Why do people do this? I have a drill, and a long boring Sunday ahead of me, idle hands and all that :smiley:

 

[Fletcher]

To help airflow, and create 'less drag'

 

[Fraser.J.]

I like the look, don't think it will really do much but as above really

 

[imprezaworks]

Yeah I quite like the look. Looks more purposeful.

 

[dangerous dave]

There's loads of cars that come from factory with venting in the rear bumpers for the same reason..

The other option is an undertray of some sort..

Or both

 

[charltjr]

Thanks all, I did wonder if it was a drag thing. I do quite like the look but not sure I want to start butchering the rear bumper. Something to consider.

 

[imprezaworks]

I can see on its own making a Minimal difference. Looks cool though if nothing else

 

[Inequality Street]

Why would you want to have holes in your car?

No thanks!

 

[JackJack]

Looks good on a track car

 

[DannyR]

 

[NorthloopCup]

You'd gain more from venting the wheel arches tbh.

 

[imprezaworks]

I think it looks good. Just screams track car imo

 

[dann2707]

Weight saving innit.

 

[GrahamS]

only in the front for me I think

 

[dangerous dave]

Perfect.

 

[gudger12345]

Cut the bumper off and remove the spare wheel.

 

[Addicted]

For it to look silly? (not a fan sorry)

For the weight you "saved" on the rear, you've just added it to the front though I guess at least you don't have the drag now.

 

[ilovewilly]

Put a 50mm one in each mirror cap.

Give it a week and you'll see everyone doing it.

 

[Budgie]

I love all this stuff.

Then the chubby fucker driving will a 16oz steak, chips and 4 or 5 pints the night before the trackday.

 

[JP83]

I love all this stuff.

Then the chubby fucker driving will a 16oz steak, chips and 4 or 5 pints the night before the trackday.

Damned straight!

 

[charltjr]

I love all this stuff.

Then the chubby fucker driving will a 16oz steak, chips and 4 or 5 pints the night before the trackday.

Uh, have we met?

 

[Rubicon_]

Not for me, looks mean on a ph1 though.

 

[Lal B3N]

Looks utter shite.

 

[Dan@SJM]

I love all this stuff.

Then the chubby fucker driving will a 16oz steak, chips and 4 or 5 pints the night before the trackday.

I'm happy to turn the boost up 1psi

 

[JoeMarano]

I removed the plastic panel by the boot shut the other day and driving down the road I could hear this annoying tapping noise and noticed theres these weird vent things in the back bumper with little paper thing rubber flaps that were opening and closing when I was stationary and a lorry drove past and also when driving down the a12. Wondered what they were? Its almost like they are vents for inside the car letting the air out the back?

 

[JamesBryan]

I removed the plastic panel by the boot shut the other day and driving down the road I could hear this annoying tapping noise and noticed theres these weird vent things in the back bumper with little paper thing rubber flaps that were opening and closing when I was stationary and a lorry drove past and also when driving down the a12. Wondered what they were? Its almost like they are vents for inside the car letting the air out the back?

I think you're on about the black flaps which let the 'air pressure' out when you close the door/boot.

 

[JoeMarano]

Quite possibly. They flap about and make a right old noise. Thought it was the exhaust at first!

 

[JamesBryan]

Quite possibly. They flap about and make a right old noise. Thought it was the exhaust at first!

If you were to watch them as you close the boot, you'd see them lift a bit as the air comes out.

 

[BIFCAIDS]

All about the gainz for non-competition cars.

 

[Addicted]

All about the gainz for non-competition cars.

Dual carriageways are srs business!

 

[Martin.]

Quite possibly. They flap about and make a right old noise. Thought it was the exhaust at first!

I thought exactly the same.

Then I binned them and the noises were gone forever

 

[rctempire]

Holes are for goals.

 

[KitsonRis]

I need them in my life. Possibly a job for the summer.

 

[chris blue]

Seen a few Clios at Castle Combe today with NO rear bumper, and one with NO rear bumper and NO front bumper too
Dont like the look, but does it really help air flow?

Like the 2 inch holes though... but again, only for looks?