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Old 20-11-2009, 18:09   #1 (permalink)
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Brakes feel a bit 'spongey'

my brakes feel a bit 'spongey' at the minute. the car had an MOT the day after putting a deposit on it (and the day before i picked it up) so they are obviously still at a standard thats legal but im not really happy with them. i braked fairly heavily to test them out when i got the car and im glad i started braking a little sooner than i was going to!

i cant afford any new disks but will uprated pads make a bit difference to the feel and stopping power? if so can anyone recommend any good deals?

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Old 20-11-2009, 18:21   #2 (permalink)
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Driving at speed and braking heavily is not really advised now is it?

Could be air in the system, or the pads and discs are on the way out. If you have a 105 and braking with standard brakes from that speed they will overheat very quickly and get spongy because they are overheating.

Slow down before your brakes fail completely
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Old 20-11-2009, 18:24   #3 (permalink)
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Heres a quick guide to see how I uprated my brakes from 105 setup to 160 setup

https://www.themgzr.co.uk/vb/showthread.php?t=110385
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Old 20-11-2009, 18:34   #4 (permalink)
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could be either air in the system ,the pads need deglazed or that the brake fluid is due a change, as brake fluid is hydroscopic(means it absorbs moisture) after a period of time, when it has absorbs so much moisture, once you start using them the water in the fluid boils as it has a lower boiling point than the brake fluid creating steam pockets, as steam is agas its compressable, so the pedal becomes spongy, id recomend also taking the pads out deglazing them(cleaning them up with sand paper) and do the same to the discs as well, along with a full system brake bleed it should hopefully feel a lot better, you can do this with the rear drums too,
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Old 20-11-2009, 18:53   #5 (permalink)
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If its a 105 you've got and you're breaking from 100mph then the brakes will cook and im very surprised you didnt crash into a tree.

If you're that unhappy with them then replace the disks and pads, its not overly expensive.
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Old 20-11-2009, 19:14   #6 (permalink)
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Old 21-11-2009, 18:13   #7 (permalink)
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its a 120 and i dont usually drive at daft speeds. just wanted to check the brakes out to see what they were like. ill have a look at sorting the existing pads out and ill also try sorting the fluid out. hopefully that ill make enough of a difference. also, cheers for ediing my first post
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Old 22-11-2009, 15:07   #8 (permalink)
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check the brake hoses for cracks in the outer rubber near the metal ends.
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