warped rotor possibly????

[bigndn]

I've experienced this before in my Toy mini, but not in any of my other rigs, so bear with me. I did search for rotor info, but didn't come up with anything.

When applying the brakes hard from highway speeds (55mph down), sometimes it feels as if the right front tire begins bouncing. It doesn't happen at lower speeds no matter how hard I hit the brakes. It doesn't happen at highway speeds when I slow down gently by braking. New tires did help correct the problem, and I've inspected the brakes and rotors and everything seems to be working fine. Could this be caused by a warped rotor or would that cause it to bounce under braking each time/every time? You guys have any ideas on this?

 

[Jukelemon]

New tires would not affect a warped rotor BUT bad tires would accentuate-in terms of feel a bad rotor i.e. more issues more feeling of wobble/surge. Depending how out of tolerance they are will mean at what speed the surge begins.

 

[bigndn]

A little clarification.......

Before I got new tires, it was definately worse.

 

[cedarbarn]

A little clarification.......

Before I got new tires, it was definately worse.

But it is still there?

I have had warped rotors on trucks other than Toyotas... The warped rotor usually is noticeable at highway speed braking, not low speed braking. Having your rotors turned is not very expensive, and once done can help isolate the problem if the problem still exists.

 

[KliersLC]

What rig? If it has ifs and drive plates, it could be worn CV joints.

 

[bigndn]

What rig? If it has ifs and drive plates, it could be worn CV joints.

It's my 1985 Toy Xcab pickup. Solid front axle, no IFS.

 

[Jukelemon]

A little clarification.......

Before I got new tires, it was definately worse.

Exactly. At that time, you probably had bad tires AND bad rotors.

 

[foxfab]

bent rim maybe?

 

[bigndn]

bent rim maybe?

Negative. I'm gonna have to go with Jukelemon's guess of bad tires with bad rotors. Thanks, guys!! Will be pulling rotors soon and having them turned. If that's not it...........

I'll beeeeeeeeeeeeeeeeeeee baaaaaaaaaaaaaaaaaaaack!

 

[Jukelemon]

Not sure if you can on your truck, BUT my last 100 series could get the rotors turned ON the vehicle at the dealer. Cost was not that much and for the convenience, really not that bad at all. Might be worth a call

 

[Tools R Us]

Most of the time a brake judder can be felt at low speeds. At high speed it maybe the start of a death wobble. On straight axle trucks an oscillation can happen where the axle moves one way and the steering moves the other, called a death wobble. Look for play in the spring bushings, trunnion bearings, wheel bearings, tie rod ends and not having enough caster will make it worse.