Bottoming out while heavy breaking/turning - Toyota Yaris Forums

regal · 06-05-2009, 11:22 PM

I had gone over a curb, they replced everything from th oil pan to the xmember to the entire exhaust.

I'm on TRD springs, Tokico Blue hock, TRD reaer Sway.

Under very fast heavy braking I sometimes feel something like the tranny bottoming out/grinding. Toyota dealer offered to look at it but they just usually baby drive. Do you thik I am just pushing the limits of the TRD springs?

Its really not repeatable, only happens under the worst abuse, do you thik it is worth a trip back to the colllision center?

taKuto · 06-05-2009, 11:32 PM

time for a stiffer setup? :)

auxmike · 06-05-2009, 11:55 PM

Time to stop abusing a Yaris??

Tamago · 06-06-2009, 06:23 AM

what's your tire air pressure, and how much did you cut off your bump stops when you installed the suspension?

SailDesign · 06-06-2009, 09:09 AM

Or are you confusing the "sandpaper" feel of the ABS with something bottoming out.

But Yeah - tire pressures?

kngrsll · 06-06-2009, 09:27 AM

try smoothing out your driving style, remember SMOOTH = FAST

regal · 06-06-2009, 09:58 AM

Quote:

Originally Posted by SailDesign

Or are you confusing the "sandpaper" feel of the ABS with something bottoming out.

But Yeah - tire pressures?

You know I've ever owned an ABS veicle, this maybe it. It is like a sandpaper grabbing and releasing quickly.

regal · 06-06-2009, 10:01 AM

Quote:

Originally Posted by taKuto

time for a stiffer setup? :)

Cars are built for us to drive hard. I have owned 12 cars in 20 years and enjoyed pushing their limits. Only car I couldnt kill was an eg civic

CASTREX · 06-06-2009, 05:22 PM

Quote:

Originally Posted by regal

You know I've ever owned an ABS veicle, this maybe it. It is like a sandpaper grabbing and releasing quickly.

There you go! it's probably the abs doing its thing.

Go find some slippery surface and do some heavy braking to try to replicate the feeling.

Tamago · 06-06-2009, 08:48 PM

answer my question please

scape · 06-08-2009, 10:38 AM

Quote:

Originally Posted by regal

You know I've ever owned an ABS veicle, this maybe it. It is like a sandpaper grabbing and releasing quickly.

sounds like abs, you might be able to easily deactivate it for your hard driving days...

Tamago · 06-08-2009, 10:53 AM

Quote:

Originally Posted by scape

sounds like abs, you might be able to easily deactivate it for your hard driving days...

not recommended... you'll be HATING life.. instant brake lockup

largeorangefont · 06-08-2009, 12:40 PM

Quote:

Originally Posted by Tamago

not recommended... you'll be HATING life.. instant brake lockup

It is definately NOT instant lock up, The car is fine without it. You just have to be smooth on the brakes and modulate the pedal.

largeorangefont · 06-08-2009, 12:42 PM

Tamago is right, you could be on the bump stops. My car never exibits this behavior and I am lower than you are.

markitect · 06-08-2009, 01:08 PM

Mine has no abs and the only time I lock up the brakes is when I'm being an idiot.

Another thing to check is the plastic inner-fender liner. I had a similar problem and it turns out I was rubbing on it (with stock wheels and tires) because it had popped in. I just pushed on it to pop it back into place. Mine was never in an accident or anything, I assume its from autocorssing.

Tamago · 06-08-2009, 01:10 PM

Quote:

Originally Posted by largeorangefont

It is definately NOT instant lock up, The car is fine without it. You just have to be smooth on the brakes and modulate the pedal.

have you driven an abs equipped toyota with the relay removed? the brake booster is especially touchy on abs equipped models.

kngrsll · 06-08-2009, 01:15 PM

Quote:

Originally Posted by markitect

Mine has no abs and the only time I lock up the brakes is when I'm being an idiot.

Another thing to check is the plastic inner-fender liner. I had a similar problem and it turns out I was rubbing on it (with stock wheels and tires) because it had popped in. I just pushed on it to pop it back into place. Mine was never in an accident or anything, I assume its from autocorssing.

there is a difference between having no ABS and having ABS disabled though...

largeorangefont · 06-08-2009, 02:43 PM

Quote:

Originally Posted by Tamago

have you driven an abs equipped toyota with the relay removed? the brake booster is especially touchy on abs equipped models.

Yes and Subarus as well. Like I said.. you just have to be smooth. I've only done it on the track though, not on the street.

Yes if you start stabbing at the brake pedal, you are going to lock the wheels.

06-05-2009, 11:22 PM	#1
regal Drives: 09 Yaris 3 Dr White LB Join Date: Mar 2009 Location: PA Posts: 432	Bottoming out while heavy breaking/turning I had gone over a curb, they replced everything from th oil pan to the xmember to the entire exhaust. I'm on TRD springs, Tokico Blue hock, TRD reaer Sway. Under very fast heavy braking I sometimes feel something like the tranny bottoming out/grinding. Toyota dealer offered to look at it but they just usually baby drive. Do you thik I am just pushing the limits of the TRD springs? Its really not repeatable, only happens under the worst abuse, do you thik it is worth a trip back to the colllision center?

06-05-2009, 11:32 PM	#2
taKuto rice rocket Drives: 05 Echo Join Date: Feb 2007 Location: Toronto Posts: 163	time for a stiffer setup? :) __________________

06-05-2009, 11:55 PM	#3
auxmike Drives: 2008 HB, A/T, Power W/L/M Join Date: Oct 2008 Location: LI, New Yawk Posts: 2,063	Time to stop abusing a Yaris?? __________________ Never take eyes off opponent - Bruce Lee

06-06-2009, 09:27 AM	#6
kngrsll Apexing Egg!! Drives: 07 Toyota Yaris white hatch Join Date: Oct 2006 Location: Spartanburg, SC Posts: 872	try smoothing out your driving style, remember SMOOTH = FAST __________________ HighTach Motorsports 2007 Toyota Yaris-ARGH!! Mods: Tokico HTS, 6.6 kg F, 6.1 kg R custom springs, 23 mm RSB, 2-way TRD LSD, 15x7 +25 Team Dynamic wheels, 195/55/15 Dunlop Star Specs, Cobra Suzuka S

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06-06-2009, 09:09 AM	#5
SailDesign Drives: . Join Date: Feb 2007 Location: . Posts: 1,931	Or are you confusing the "sandpaper" feel of the ABS with something bottoming out. But Yeah - tire pressures?

06-08-2009, 12:42 PM	#14
largeorangefont Break'em off some. View User's Garage Drives: 07 Yaris LB, 04 Cobra Join Date: Jan 2007 Location: So Cal, OC Posts: 854	Tamago is right, you could be on the bump stops. My car never exibits this behavior and I am lower than you are.

06-08-2009, 01:08 PM	#15
markitect Drives: Yaris Join Date: Oct 2008 Location: Michigan Posts: 199	Mine has no abs and the only time I lock up the brakes is when I'm being an idiot. Another thing to check is the plastic inner-fender liner. I had a similar problem and it turns out I was rubbing on it (with stock wheels and tires) because it had popped in. I just pushed on it to pop it back into place. Mine was never in an accident or anything, I assume its from autocorssing.