Best way to increase downforce ??

[tech1889]

Been having a look around and am curious to which the best way to create downforce on the mk4..

I no there is various splitters but which one is best i no most people go for looks but i want performance more...

R32 front bumper will this aid in downforce ?? maybe with a custom splitter ??

Are the JOM R32 front bumpers any good and do they require cutting or are they a good OEM fit ??

Spoliers cant be any good as they produce downforce at the back which rasies the front wheels am i correct ??

Any ideas will be much appreciated.. Will hopefully test a few ideas in the near future cost depending..


Many thanks in advance

Dan

[Tazzy]

obviously lowering the car on stiffened suspension/coilovers will reduce the amount of air that can get underneath

front splitters are designed to push the lower air around the side of the car or over the car to push down on the car

rear lower splitters are designed for air to wrap around the cross piece, hence holding the back down - any air that does travel under the car

rear spoilers are only of gain at 70mph, so i would hazard a guess and say the splitters are the same

[tech1889]

Yep good answer there.. i wondered if putting an adjustable carbon fibre splitter would help ??

Dan

[houston]

i remember reading that a front splitter to work effectively has to be less than 6cm away from the ground! why do you want so much downforce?

and rear downforce wont lift the front, but its a bit pointless on a fwd car.

why are you looking at this kind of thing anyway? golfs not exactly gonna take off at speed, and you get more traction from fitting a rear anti roll bar than a spolier or a splitter

[JC]

downforce is so 2009

so as this scooby driver has

fat chicks - instant lowering,  road holding and stance

[richw911]

lol @ chuff 

[Wazzzer]

Just look to the old 80s and 90s Fords for a few ideas. The gurney flap was used on the RS500s already massive rear wing to increase downforce. Also if you want to know what happens to cars when they take the downforce spoilers off...

[jake]

Yep good answer there.. i wondered if putting an adjustable carbon fibre splitter would help ??

Dan

Mate these are not just things that you put on and attach to the front bumper!

There is alot of work involved! The carbon would not just be a splitter, the carbon would be a full pane that runs roughly half way down the length of the car, The only part visibly being the the "splitter".

The reason for this is as you want to gain top speed runs, or higher speed racing, you need the splitter to pull down the car not the actual bumper! So if you just simply attached the splitter to the bumper it would just put strain on your bumper.

these are not for normal daily driver use either, as they need to sit very low to work effectively, and also about 3-4 inches outwards, so they do stick out, So parking would be a b!tch if a curb was infront of you!

Not even taking into consideration a chav standing on it!

For something like this you would be looking at around £300-400.

For road use i would just go for the Cupra R splitter!

[houston]

road use all the splitter is for is just looks

[Wayne]

Just look to the old 80s and 90s Fords for a few ideas. The gurney flap was used on the RS500s already massive rear wing to increase downforce. Also if you want to know what happens to cars when they take the downforce spoilers off...

That was not caused by a loss of downforce, from memory the gearbox seized.