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Afternoon guy's

Only had my 04 lexus is 200 sport around a week now (brought private, full lexus history, 27000, serviced in jan 07) but it feels unsteady under heavy breaking (and if you've seen the missis drive thats alot of the time ;-). theres no unsettling noises and seems to stop ok but its the feedback through the brake peddle like a judder. Only ever driven this one so not sure if its normal or not, just been serviced and safety checked so not sure whether to take it for a check up or not. Anybody else had this? Like i said only ever driven this one so could just be me getting use to it.

Apart from that it looks, drives and sounds fantastic.

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Or possibly wrongly torqued road wheel nuts.

I had a similar problem on my Mk1 GS, wheel wobble/vibration when braking from around 60mph.

Took front wheels of replaced nuts in correct sequence and then tightened again in same sequence to correct torque and no further problems whatsoever.

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Or possibly wrongly torqued road wheel nuts.

I had a similar problem on my Mk1 GS, wheel wobble/vibration when braking from around 60mph.

Took front wheels of replaced nuts in correct sequence and then tightened again in same sequence to correct torque and no further problems whatsoever.

cheers guys will check it out

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wrongly torqued nuts will lead to warped discs

definetly sounds like warped discs

problem with safety and service checks is they dont drive the car, lets face it a car is as safe as house as long as you dont drive it !!

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Hi.

Warped discs will give you judder. It is quite common for cars with auto transmission to have warped discs. When you brake the disc heats up. If the brake pads are held against the disc when they are hot they cool assymetrically, i.e the part of the disc in contact with the pads cools at a slower rate. This causes the disc to warp. Guess what many of us do when stopped at traffic lights, we rest out foot on the brake pedal to prevent the car from creeping.

Thats the reason why most cars judder when braking.

Hope it helps.

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If you just put it in"park" it won't happen.Stops brakes from heating 1 part of disc and is also safer.A lot of auto cars also suffer from the park brake not working correctly.........usually because it is not used and gets seized up,because folks tend to put car in park and never actually use the parking brake(when parking as opposed to stopping in traffic)

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I find the parking brake on my GS difficult to use, but your right dave 1 they will eventually sieze if not used. I always slip mine into N or P when I'm stoped at lights or in traffic. All the time D is engaged the torque converter is trying to creep the car forward cauing heat wear and using more fuel. I know this doesn't make much difference to fuel consumption but every little helps

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Hi.

Warped discs will give you judder. It is quite common for cars with auto transmission to have warped discs. When you brake the disc heats up. If the brake pads are held against the disc when they are hot they cool assymetrically, i.e the part of the disc in contact with the pads cools at a slower rate. This causes the disc to warp. Guess what many of us do when stopped at traffic lights, we rest out foot on the brake pedal to prevent the car from creeping.

Yeah i must say iv been working off that theory for a couple of years now, well ever since iv had an automatic car, that the brakes will warp when you come to a stop and then keep your foot on the brake pedal. It only makes sense that it wont all cool down properly.

I now nearly always put it in "N" when at traffic lights to stop this. If im on a slope somewhere i will keep my foot on the brake but let the car creep every few seconds so as not to hold the sme bit of disc against the pads for too long. This is why i never park too close to the car in front!

And i dont think my park brake works either, its not part of the MOT on an automatic car is it?

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