Car vibrates while braking...
#1
Staging Lane
Thread Starter
Join Date: Mar 2005
Location: Bethesda, MD
Posts: 79
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
..but only after i get on it. like on the highway, after gunnin it, when i hit the brakes the whole car vibrates..like a pulsation..any ideas?
#2
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Well mine does this too. And no it is not normal. I had a Dakota and mine did this, well it got progressively worse, because the damage to my rotors was progressive. Wat you describe sounds like what I have in my Trans Am. Warped rotors, if you don't change them out or at lest get them turned and serviced, you'll be in deep poopy. After the pads eat away all the rotor material and get down to the inner vents/ ribbing, it sends to eat the pads to bits, and then your calipers. At this point it is not a serious problem if it isn't violent shaking, but just subtle, but it can be very damaging and very expensive. I recommend replacing the rotors for some more heavy duty ones. You can by simple replacements, but personally I would beef it up. You can get some Baer Eradispeeds, or Powerslots, both good brands. Or go really well and get C5 rotors from LGMotorsports, which I plan to get. It has performance C5 rotors, and a bracket that extends out your existing calipers to reach around the new larger C5 rotors. It uses the stock calipers and for a comfortable non squeeky ride you may still use stock pads. It all depends on how much money you want to spend.
#5
TECH Junkie
iTrader: (9)
Join Date: Dec 2001
Location: WA
Posts: 3,326
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
As noted above, you probably have warped rotors - its not uncommon. The correct/thorough way to check is to measure the lateral runout on your rotors while they're mounted on the vehicle. My guess (emphasis on GUESS), though, is that if you just replace the front rotors with some Brembo blanks (cough...cough... http://www.tirerack.com/brakes/resul...emium&x=83&y=8 ) you'll see the problem go away.
#7
Staging Lane
Thread Starter
Join Date: Mar 2005
Location: Bethesda, MD
Posts: 79
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Will my warranty cover this? I have a bumper to bumper warranty until 90k miles! I guess ill find out on tuesday when I stop by my dealership. I hope they don't try to blame it on my rims or something.
Trending Topics
#12
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Wouldn't count on the warranty especially if you have exceeded factory warranty. Many aftermarket warranties will only cover drive train which usually means motor and trans. But hope yours will cover brakes.
#13
TECH Enthusiast
Join Date: Sep 2004
Location: Midland, TX
Posts: 598
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
He did say bumper to bumper warranty and I agree with the others - warped rotors. Happened to me a few weeks ago. Mine were already old so I just bought new ones.
#14
Staging Lane
Thread Starter
Join Date: Mar 2005
Location: Bethesda, MD
Posts: 79
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I'm gonna take it to the dealer tomorrow, my only free time..car is getting worse now, it damn near vibrates everytime I brake! Yah I purchased a warranty that covers damn near everything which helps in this case..but sucks cuz I cant touch my motor, trans o nothing till like 90k miles!
#15
On The Tree
iTrader: (5)
Join Date: Mar 2005
Location: ORLANDO in the sunny state
Posts: 125
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by Darkspoon
..but only after i get on it. like on the highway, after gunnin it, when i hit the brakes the whole car vibrates..like a pulsation..any ideas?
it's the rotors. they are warped... My '99Z had new GM rotors installed when I bought it (the second set at 30K miles) ... it took only 6 months and they warped.... brake parts are considered 'normal wear' and are usually not covered by warranty...
I bought the $40 rotors at AutoZone and new pads - these are installed for 40K miles with no problems whatsoever.... it's not always only the most expensive solution that works best... good luck
#16
TECH Enthusiast
Join Date: Sep 2004
Location: Midland, TX
Posts: 598
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by Darkspoon
Yah I purchased a warranty that covers damn near everything which helps in this case..but sucks cuz I cant touch my motor, trans o nothing till like 90k miles!
![The Jester](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_jest.gif)
#18
On The Tree
iTrader: (5)
Join Date: Mar 2005
Location: ORLANDO in the sunny state
Posts: 125
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by Darkspoon
Argh well the dealership won't replace my rotors. A wear 'n tear item they say.