2006 Honda Odyssey Shake at 30-35 MPH

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Shakes or Wobbles problem
2006 Honda Odyssey 6 cyl Front Wheel Drive Automatic 54836 miles

We purchased the van used with 45K miles approximately 1 year ago and no wobble was felt for 4-5 months.
Now between 30-35 mph there is a moderate wobble in the front end when lightly accelerating. It is not felt every time we accelerate through those speeds.

The Honda dealer said it was definitely a tire related problem. New tires were put on the front (needed soon anyway) and old front tires rotated to the rear. The vibration was still felt. I asked to recheck the balance and it came back fine.

What is my next course of action?

Do you
have the same problem?
Friday, January 23rd, 2009 AT 12:23 AM

1 Reply

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Though vibrations are usually caused by an out-of-balance wheel and tire assembly, it's important to remember that vibrations can also be caused by excessive radial (vertical) and lateral (sideways) runout in the tire, wheel or hub. Loose, worn or damaged wheel bearings as well as certain kinds of tread wear can also cause annoying vibrations.

When troubleshooting the cause of a vibration problem, start by inspecting the wheels. Look for evidence of missing weights, mud or dirt packed in the back of the rim or debris embedded in the tread that could create an imbalance. Also, rotate and wiggle each wheel by hand to check for excessive play or noise from the wheel bearings.

If a vehicle has alloy rims (particularly a performance or sports type vehicle), tire slippage on the rim may have thrown the assembly out of balance. This can happen if a long-lasting lubricant such as silicone is applied to the rim or tire bead when the tires are mounted. Under hard acceleration or braking, the tire may actually rotate slightly on the rim. The cure? Remove the wheels, put the wheel and tire on your tire machine and break loose both beads. Thoroughly clean both mating surfaces, then reinflate the tire to reseat the beads and rebalance the assembly.

If the radial cords in the sidewalls of a tire are not spaced evenly or are damaged, it can create a "waddle" or vibration due to force variations in the stiffness of the sidewall as the tire rotates. This condition, which is referred to as "loaded runout, " is most noticeable at low speed (5 to 30 mph), and may also appear as ride roughness at highway speeds (50 to 70 mph). A Tire Problem Detector may help you diagnose this kind of problem. This device has a roller that can be positioned under a tire so you can check for spindle movement while rotating the tire slowly with the weight of the vehicle pressing down on it.

Another source of vibration can be uneven tread wear. Run your hand across the tread in both directions. If one way feels rougher than the other (like toe wear), lack of rotation may have caused a heel-and-toe or sawtooth wear pattern to develop on the tread blocks. This kind of wear is most often found on the rear tires of front-wheel drive cars. The wear may be barely perceptible to the naked eye, but is rough enough to produce an annoying vibration at medium to high speeds that feels like a bad wheel bearing. Rotating the tires once this kind of wear has developed is a waste of time because it takes too many miles to scrub off the uneven wear. New tires would be recommended.

Scalloped wear on a tire would tell you the tire is bouncing as it rolls along because it is out-of-balance, out-of-round or the shocks are weak.

Be sure to measure tread depth, too. Measuring tread depth at several points around the circumference of the tire will tell you if the tread is wearing evenly and if the depth is equal. A difference of more than about 1/16th inch (.0625 inches) would indicate an out-of-round condition. Most tires should probably have less than.050 inch of radial run-out, and some even less depending on how sensitive the vehicle's steering and suspension (and driver) is to vibration.

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Friday, January 23rd, 2009 AT 12:42 AM

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