All Things Mk5 > Performance Modifications
Rear Brake Pad Upgrades....
Hurdy:
Luckily I now have a couple of guys locally who can help me out with OEM stuff fairly cheap and this should pay dividends with getting stuff swiftly and at *cough* cost :happy2:
Teutonic_Tamer:
--- Quote from: RedRobin on September 01, 2009, 04:57:28 pm ---....
I have it on good authority (AP Racing) that the Golf GTI does about 85% of its braking on the front wheels and consequently most big brake upgrades are front kits.
--- End quote ---
Oh, boy, you really do keep going on about that utter BS, from AP. As I have repeatly stated, the GTI, along with most road cars do NOT have an extreme bias like that. The Golf Mk5 platform cars are running around a 60:40 brake bias - and this is very EASY to prove!
--- Quote from: RedRobin on September 01, 2009, 04:57:28 pm ---For normal road use it's considered fine to leave the rear brakes as oem, but for trackday use it's advisable to at least upgrade your rear pads.
--- End quote ---
Nope, if you 'upgrade' the fronts, then the rears should also be upgraded, to maintain the balance. If you don't upgrade the rears, the rear end will become un-nervingly twitchy under heavy braking, in anything other than an arrow-straight direction, on billiard table smooth and level tarmac. And both you, and others have described this very situation.
--- Quote from: RedRobin on September 01, 2009, 04:57:28 pm --- If you don't, you may experience fade on them quite quickly and without fully realising.
--- End quote ---
That simply PROOVES just how hard the rear brakes are trying to work!!!!!! And it also proves that the rear bias is CONSIDERABLY more than the rubbish AP are spouting!
--- Quote from: RedRobin on September 01, 2009, 04:57:28 pm ---Unless you want it as eye-candy you don't really need to change the rear discs on the Mk5 GTI to something grooved and/or drilled - For the 15% work they do the plain discs are quite sufficient.
--- End quote ---
Nope, if you upgrade your fronts with 'bigger' discs, you really need enlarge the rear discs by the same relevent amount - to cope with the 40%, not 15% the rears have to deal with.
And you have completely failed to address the issue of the rear brakes working when the brake pedal isn't even pressed!
Teutonic_Tamer:
--- Quote from: gillm on September 01, 2009, 07:44:59 pm ---never had a problem with them on track and don't really see the point . braided hoses will help tho
--- End quote ---
How do braided hoses improve brake efficiency? They do NOT. Just another 'snake oil' product. Braided hoses arn't even used in MotoGP, with their mighty carbon brakes, braking from 230mph!
Teutonic_Tamer:
--- Quote from: Hurdy on September 02, 2009, 12:07:39 am ---
--- Quote from: RedRobin on September 01, 2009, 07:58:02 pm ---
--- Quote from: gillm on September 01, 2009, 07:44:59 pm ---
never had a problem with them on track and don't really see the point . braided hoses will help tho
--- End quote ---
....Weeeell, I'm inclined to take AP Racing's advice.
Perhaps adding braided hoses to the rear may also help but I won't bother with that until my next brake fluid change and also until speaking with AP and VWR again.
--- End quote ---
I remember asking T_T (Sean) about braided hoses in the past. He said that the OEM hoses are banded internally anyway and that they are more than up to the job. :happy2:
--- End quote ---
Correct. Braided hoses are only really usefull on rally cars, to prevent the hoses being cut from flying rocks and the likes.
RedRobin:
^^^^
Hey, T_T!! Helloooo!! I think my post was done here before we had our reasoned and calm convo about the same subject on the other forum.
:smiley:
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