Brake problem

Axel, I had the same problem in my 99 GC. After three sets of OEM rotors I gave up and bought the Stillen cross-drilled/slotted rotors and pads. Not cheap but they fixed the problem (about $350). No more shake and better stopping with Stillen brakes. I cant say enough about this upgrade. It completely cured my problem.

Make sure you have the new Akebono type calipers upgrade. See first link below, which explains the problem and explains the TSB that upgrades to Akebono calipers. Then see a review of the Stillen rotors (second link) Then buy them (third link). Best $350 you'll ever spend.

If the mentioned brake work has been done, then the vehicle is likely the recipient of a gorilla with an air impact gun.

It seems like the latest Scam, but these fools are hammering on the wheel lug nuts in 'supposedly' routine tire rotations which will warp the rotors bad.

They then expect to make $$$$ off the 'fake' brake job now induced.

They try to cover their asses by saying, 'ya but I used a torque stick' on my air hammer. BS is the only call there, a brand 'New' 'torque stick' has at 'least' a +/- 15% tolerance, most have 20%. This quite plainly means, in the hands of an 'expert', the torque on a 100 ft lb nut can be anywhere from 85 ft lb to 115. This 30 to 40 foot pound difference is easily enough of a difference to warp the rotor.

The only proper way to put on 'modern' tires, well since they started teaching the proper way back in the 1970's when aluminum wheels came in, is to put them on with the gun if you want and to 'finish' them with a proper torque wrench.

ALL the garages I use, Jeep shops included use a torque wrench to finish the wheel lug nuts. If they didn't, they would lose me as a customer and they 'don't' know this...

Mike

I think you give them too much credit. Anyone smart enough to know this can happen is also smart enough not to do it. You only 'discover' it by being stupid.

Ummm, Romain, the tolerance is not between uses of the *same* stick; it's tolerances between *different* ones. Using the same torque stick will yield the same torque every time within a foot-pound or two. Further, the tolerance is more like 3%. Do a search. Torque wrenches are inaccurate, too.

-- C.R. Krieger

Yep, got mine from Kolak. Higly recomended if he is still around.

No, this was discussed on the auto tech group and my numbers are right and were searched.

The 'tolerances' for a torque stick are +/- 15% for an 'expensive' one and this means a +/- 15% on each 'use' with an 'expert', not on each stick. It's the hammer.

This is unlike a torque wrench that has the tolerance set the same for each wrench because of the 'Hammering' action of the 'impact' gun.

I have worked with these things for years.

Mike