[bluetoy]

boost til'bust,Nov 9 2004, 08:5 Wrote:

Jays2000ZX3,Nov 8 2004, 02:01 PM Wrote:Someone please explain to me why it matters.

Just tighten them so they don't fall off, so that you can remove them next time and not enough to snap the stud.

I have never and will never use a torque wrench then putting on some wheel lugs.

I don't know too many tire shops that do that either. They have the "torque bar" for the impact...but I'm sure that's not really accurate.

torque bars are pretty accurate. I use them at work. If you are using an impact gun, torque bars are a must. If you measure rotor runout using a regular socket with an impact gun, and then using the torque bar, you will see a significant difference in rotor runout. Excessive rotor runout causes the rotors to warp and can cause brake vibrations at high speeds.

Torque bars are not accurate at all. We have had them removed from the local tire shop by proving they do not work. Now they only use a torque wrench.

We brought in a truck which requires 475 lbs of torque on the wheel nuts. We tightened all the nuts using a 475 torque bar and then proceeded to check the torque with a torque wrench. Out of 10 lugs 8 of them were torqued to over 900 lbs. The other two were over 600 lbs.