Lee_e Posted June 14, 2009 Share Posted June 14, 2009 Hey guys Im sorry if this has been covered before but like everyone will say, were all in different situations some how lol Basically the guy before me changed the brake discs to drilled and grooved and its really juddery when braking from 50mph or 90mph to a slower speed and then still when lifting off. ? I think the pads need changing as they look about just under half way through but other than that i cant really work out why its doing it . oh my car is a 1997 jspec TT with 19" jade r wheels. any help would be amazing thanks Quote Link to comment Share on other sites More sharing options...
imi Posted June 14, 2009 Share Posted June 14, 2009 sounds like the discs are warped. Quote Link to comment Share on other sites More sharing options...
Lee_e Posted June 14, 2009 Author Share Posted June 14, 2009 ahh see i did think that but by the looks of them there brand new no rust on them or any dents etc but yess that could be it. by the way how much is it for the uk brake set up ? will have about 300 to 400 to spend . Quote Link to comment Share on other sites More sharing options...
imi Posted June 14, 2009 Share Posted June 14, 2009 been asked before - use the search function recent post suggested about GBP1200 for a full UK brake setup. Quote Link to comment Share on other sites More sharing options...
Steviekid Posted June 14, 2009 Share Posted June 14, 2009 New discs can be warped by people stamping on the brakes before they've been bedded in properly. I've also heard of people getting brake judder if the discs have been put on the wrong way round. Quote Link to comment Share on other sites More sharing options...
Lee_e Posted June 14, 2009 Author Share Posted June 14, 2009 oh ok ill have a search then , just thought id be cheeky to get a quik reply well ill go to toyota tomorrow or the performance garage down the road from me and ask them to have a look. thanks guys Quote Link to comment Share on other sites More sharing options...
imi Posted June 14, 2009 Share Posted June 14, 2009 rather than taking it to toyota or any "performance" garage, i'd look to take it to a club endorsed garage. Quote Link to comment Share on other sites More sharing options...
Abz Posted June 14, 2009 Share Posted June 14, 2009 rather than taking it to toyota or any "performance" garage, i'd look to take it to a club endorsed garage. I would take the above advise! Quote Link to comment Share on other sites More sharing options...
DSK Posted June 14, 2009 Share Posted June 14, 2009 Hope this helps; Excessive Temperature & Rapid Wear Fault; Friction material overheating and disc surface thermal cracks (blueing) Causes; Sticking brake calipers (sliders/piston seals), Axle/Wheel imbalance, Excessive prolonged braking (drag) Friction Material Fractures Fault; Friction material cracks/fractures Causes; Pad restriction within caliper housing (flexing of pad/backplate(s)), impact damage during installation New Pads Fitted On Worn Discs Fault; Rapid wear, noise and judder Causes; Excessively worn/grooved brake disc surface Brake Disc Contamination Fault; Low brake efficiency Causes; Contaminated disc surfaces, (oils, solvents, cleaners) Uneven Pad Wear Faults; Uneven pad wear Causes; Poor alignment of brake caliper, poor alignment of brake disc/hub Fault; Uneven pad wear between 'inboard and outboard' pads Causes; Sticking brake caliper (insufficient lubrictaion of caliper sliders), worn/damaged piston seals Brake Noise & Judder Faults; Brake noise and judder Causes; Dirty wheel hub Brake Noise Faults; Brake noise Causes; Pads are tight in caliper (see scratch mark evidence on pad backplate edges). Uneven pad/disc contact, worn/grooved brake discs, excessively corroded brake discs. Recommended Maximum Disc Run-Out Good Practice; Always remember to check disc run-out before fitting new brake pads. (Maximum disc run-out on vehicle 01.5mm) Problems; Excessive run-out will cause noise, judder, uneven pad wear and poor brake efficiency. Brake Disc Damage Faults; Thermal Cracks (Blueing) Causes; Rapid pad wear, brake judder, vehicle vibration and brake noise. Brake Disc Failure Faults; Top Hat detachment Causes; Overtightening of wheel nuts (careful use of air pressure guns is required) Friction Material Detachements Faults; Friction material detachment Causes; Impact damage during pad removal/installation and/or excessive corrosion. Quote Link to comment Share on other sites More sharing options...
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