Quote:
Originally Posted by Neckster
I just had new Firestone front steers installed. Everything seems to be fine when driving except for at about 30 mph the truck vibrates pretty bad, at around 35 mph the virbration goes away. I did not have the front end aligned, and the truck does not appear to pull to one side or the other when I let go of the wheel. This appears to be on the driver’s side. Any suggestions?
Thanks
Neckster
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Do you feel the vibration in the steering wheel or in the seat/floor? It definitely sounds like a tire vibration... well, obviously it's a tire vibration as it appears as though it started after the steer tires were replaced, right? Were the tires balanced? Hmmmm, that's a "no-brainer", so that's likely been done.
OK, jack up the suspect side of the vehicle (first), then kneel down and look just across the top of the tire tread... now spin the tire, does the tire wobble back and forth, or up and down?
Also, there should be a raised line on the tire that runs parallel to the edge of the rim... again, spin the tire and watch that line, does the line disappear under the rim? That can identify an improperly mounted tire.
Also, watch the wheel/wheel mounting as well. Improper torque sequence, debris on the hub flange, etc can cause the wheel to wobble.
If wheel alignment was the problem, it would have existed (???) before you replaced the tires. Wheel alignment rarely causes vibration... it will often damage a tire which will in turn vibrate as a result of the damage.
New tires (even defective new tires) do not commonly cause pull. In H/D trucks, pull is most often caused by rear axle alignment (dog-tracking, or scrub). Unless funny/odd wear patterns show up on the front tires.
Remember, if the vibration wasn't there before the tire replacement, the tires are most likely the cause.
I wouldn't be so sure which side it's on... that can be very misleading.