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Brake Question: Can you lock 'em up on pavement?

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Old May 25, 2007 | 08:47 PM
  #1  
ChickenLover's Avatar
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From: NV
Brake Question: Can you lock 'em up on pavement?

This is a question for the 2nd gen 4runner guys. Can you, or have you ever, locked up your front tires on dry pavement?

Today, I popped all the pistons out of my brake calipers and cleaned 'em up (some were sticking). I got everything back together and bled the brakes. During my test drive, I noticed that I was unable to lock up the front brakes. I had never tried, until now. So I'm not sure if the truck is even capable of it.

The braking power feels normal (about the same as it was before). Pedal feels fine. I know the 2nd gens only have rear ABS. But shouldn't I be able to lock up the front, if I want?

Last edited by ChickenLover; May 27, 2007 at 05:15 PM.
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Old May 25, 2007 | 08:53 PM
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Elton's Avatar
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yep mine locked up when i slammed into the chevy i hit great idea toyota to have only rear abs i couldint steer so i was screwed

Last edited by Elton; May 25, 2007 at 08:54 PM.
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Old May 25, 2007 | 08:55 PM
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tc
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I don't think mine will really lock them up, but I've never really tried.

I have a helluva time keepping mine adjusted...
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Old May 25, 2007 | 09:18 PM
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From: Los Altos, CA (Flagstaff, AZ for college)
i've slid the front before but i can't seem to lock up the back even on ice. i have the downey hd kit and the lpsv adapter on properly. i've heard that you need weight in the back to get the lpsv to put some pressure to the drums. anyone have some success adjusting them so that you don't have to be relying on 2 front discs w/ maybe a little e brake action?
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Old May 25, 2007 | 09:27 PM
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my front brakes will only skid on gravel not pavement. And abs started on the rear only not just from toyota
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Old May 26, 2007 | 06:49 AM
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From: Bucklesberry, North Carolina
Before I got my new 31x10.50s, I had some little baby dayton tires up there. I could lock them up anytime I wanted to. In fact, I used to slide in to parking spots just for the heck of it. I almost got in a wreck a couple times because of it. I slid through one stop light that turned red real quick and I had to improvise my own ABS one morning when I guy pulled out right infront of me. It won't seem to lock them up with the bigger tires now even though the brakes are brand new.
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Old May 26, 2007 | 03:34 PM
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Alright, I feel a little better knowing I'm not the only one... I'm running ceramic pads up front. I wonder if that has anything to do with it.
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Old May 26, 2007 | 03:49 PM
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From: fl
lol. ive locked up my brakes on pavement before. many times. its kinda fun actually. wet pavement, dry pavement, sidewalks, asphalt, everywhere u could imagine. some very nice skid marks. i like knowin exactly what my truck will do, so i test it to the extreme. i know what it'll do comin off the interstate at 40 in the rain and popin the clutch with the pedal to the floor arond the corner onto the merging road. yea. it spins ya right roung baby right round, like a record baby, round round round round. hehehe
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Old May 29, 2007 | 11:48 AM
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I can't lock up the front on pavement. I asked a similar question before, didn't get many answers so I'll try here. Can you 2nd Gen guys lock up the ABS in 4WD on snow or ice? I'm pretty sure all 4 lock when I'm in 4WD, any other opinions.
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Old May 29, 2007 | 11:55 AM
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From: Dallas Texas
I can lock up my front wet or dry i have 31x10.5r15 bfg. just added new ceramic pads and new rotors. they lock up a little to easy for me...in ice the rear abs did not work for me but when i took a turn a little to fast the rear abs kicked in when i hit the brakes.
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Old May 29, 2007 | 12:08 PM
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From: Green Mountain, Colorado
I can lock mine up no problem.

Two Q's:

1) Have you checked/adjusted rear brake adjustment?

2) What was your brake-bedding procedure? Perhaps you glazed them?

Rear ABS does not function in 4WD (how could it with no center diff?). Lock 'em up and go slip sliding away.

Last edited by GV27; May 29, 2007 at 12:10 PM.
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Old May 29, 2007 | 12:25 PM
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From: Missoula, MT
I thought that was the case with the ABS and snow. I like the locked up on snow, I've always driven non-abs in the snow and trust the feel of locking them up, strange as that sounds!
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Old May 29, 2007 | 12:37 PM
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From: Gorham, Maine
It might be your pads. My mechanic (knowledgeable and smart) pointed out that my pads weren't lined up nicely with my rotors, so that the inner part of the circle wasn't contacted by any friction material. He said aftermarket pads are made for multple applications so they sometimes don't fit right. I don't know if I could lock mine up if I wanted to, but I plan to check out some factory pads soon.
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Old May 29, 2007 | 12:39 PM
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From: maple ridge, British Columbia, Canada
Only my rears will lock up if I brake hard enough. Only time the fronts have locked where on gravel and snow.
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Old May 29, 2007 | 12:46 PM
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From: Little Rock, Ar
yes and no before I replaced my breaks I think they did I know with 31x10.5 and 33x10.5 they would but with my 33x12.5 on I can get them too but its something you have to work at not something to count on happening in a real situation.
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Old May 29, 2007 | 12:57 PM
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From: North Carolina
I can lock my 32s up no problem on anything but the rears wont lock make sure all the parts of the calipers are clean. I had to clean the rods the pads run on with a wire wheel to get them to work completly smooth
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Old May 29, 2007 | 01:07 PM
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From: Santa Clara California
a lady diving a civic packed full of little kids tried hittin my head on yesterday...i slammed the brakes but no lockup.
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Old May 29, 2007 | 01:50 PM
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From: Peoria IL
i was pulling my trailer (behind the 4rnr) with a 1800 lb trencher on the back a few months ago...

looked up to see an a car stoped in my lane with its blinker on

my OH ˟˟˟˟˟ moment left 15' skid marks (on dry hot pavement) with the front tires and can show you the flat spots to prove it. (i came to a stop with about 6" to spair)

Ive adjust my load break proportioning valve on my truck to the point that i can not lock up the fronts before the rears lockup.

i had a previous OH ˟˟˟˟˟ moment while driveing in stop and go traffic with no load in the truck and could NOT get anything to lockup dispite the fact the peddal was on the floor.

Last edited by snap-on; May 29, 2007 at 01:52 PM.
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Old May 29, 2007 | 02:13 PM
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My rears lock up during panic braking, but the pedel has to be through the floor.
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Old May 29, 2007 | 02:40 PM
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From: Sacramento, CA (Carmichael)
I hate the feeling when you jump on the pedal hard enough to lock them up. everything just seems to hurt, and slam forward. Odd feeling. It's probably odd to me from the couple hard accidents I've been in...
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