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View Full Version : Steering wobble after Q45 brake upgrade!

Viet-Tam
03-10-2010, 05:13 PM
I just did the q45 brake upgrade. Now my steering wheel wobbles, it did not have this problem before the upgrade. I have new rotors and pads what could be causing this?:wtf:
NINJASPY
03-10-2010, 05:17 PM
what did you change, thats your problem.
Viet-Tam
03-10-2010, 05:27 PM
I installed q45 brake calipers, pads, brake lines, and rotors.
yarou
03-10-2010, 05:30 PM
We have no idea what you did wrong. Have you even considered to take it apart to check if everything is tight? (the suspension in general)
SoguRacing
03-10-2010, 05:31 PM
check to make sure that the rotor is sitting flush against the hub. chances are that it's not. sand down the hub before you reinstall.
ADiamond240sx
03-10-2010, 05:32 PM
Did you put all the lug nuts back on?
Tom25666
03-10-2010, 06:02 PM
the steering wheel wobbles when you hit the brakes or all the time?
DrifterE
03-10-2010, 06:18 PM
Did you get your rotors drilled to 4 lug or you have a 5 lug hub?
Shadowhunter
03-10-2010, 06:51 PM
the steering wheel wobbles when you hit the brakes or all the time?


That's a good question for starters.
mmdb
03-10-2010, 07:35 PM
Retighten parts. Did you bead in the rotors correctly? Possibly warpage doesn't sound feasible since they're brand new.

Could be your wheel needs balancing. Try swapping front wheels.
S13NismoStyle
03-11-2010, 11:32 AM
+1 on making sure the rotors are sitting flush against the hub. I had this EXACT same problem. I had a metal burr on the inside of the rotor that was keeping the rotor from sitting flush.

Also, if you drill the rotors yourself for 4lug, I would suggest chamfering the inside and outside of the new holes you made. I just put the rotor in a vice and went to town with a round bastard file. This will help keep the new holes from binding against the studs when you put it on.
dato
03-12-2010, 02:51 AM
It's a rotor problem... Ok. So u got new rotors or resurfaced?? If resurfaced they were not done right.. Warp rotor or they just didn't cut enough material of from the rotors
FaLKoN240
03-12-2010, 08:10 PM
Tons of responses, nothing back from the OP.
zenkifem
03-12-2010, 08:37 PM
how tight are you lug nuts / rotors to the hub?

also your rotors could be warped causing the wobble.
FaLKoN240
03-13-2010, 07:26 AM
how tight are you lug nuts / rotors to the hub?

also your rotors could be warped causing the wobble.

I'm pretty sure new rotors aren't supposed to be warped.
MavericStephenc
03-13-2010, 08:04 AM
I'm pretty sure new rotors aren't supposed to be warped.

They aren't. however if stored incorrectly the can deform. The boxes are labeled "lay flat" for a reason.

just like stated in above posts check wheel balance, re tighten, and inspect.

for good measure look at the other suspension pieces. what are the condition of your tie rods?
zenkifem
03-13-2010, 12:17 PM
Most people who do q45 swap put on used junkyard parts, it's just a speculation Since there's a few things that can cause wobbles/shaking
rocksteady_racer
03-13-2010, 02:33 PM
Ok well I'll just throw this out there. My 300zx brake swap in my 91 was pulling hard right everytime I braked. The reason was bad tension rod bushings so nothing was being held in place so it was yanking the wheel hard to the right. So maybe your bushings on your suspension setup are bad? Then again 300z brakes grip pretty hard.
FaLKoN240
03-13-2010, 03:03 PM
Most people who do q45 swap put on used junkyard parts, it's just a speculation Since there's a few things that can cause wobbles/shaking

He said he bought new everything...
zenkifem
03-13-2010, 03:09 PM
Thanks for stating the obvious BRO, sort of realized that after posting the first time...

Im just saying so when people search it up and try to troubleshoot, they can count things off....