Hum Or Moan Noise When Driving 66-70 MPH On A Smooth Road - keywords bearing front rough suspension tire wheel

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Some customers may comment of a hum or moan noise when driving 66 - 70 mph on a smooth road. It may sound like a bearing noise, but actually may be tires. A slight roughness may also be felt. A small number of P255/65R18 Goodyear Fortera tires may set up this humming noise, due to slight variations in the manufacture of the tire. It will be noticed only when the offending tires are on the front positions of the vehicle.

If this condition is encountered, Do Not Replace Wheel Bearings. First, swap the tires front to back, and road test again. If the noise goes away, tires are the cause. If the noise is still there, replace with a known good set of tires from another vehicle and retest.

Tires built the 19th week of 2007 (Dot date 1907, this is the Last four digits of the DOT) and later will have a slight manufacturing modification to correct this condition.

Note: Goodyear will start production of the modified tire the week of May 6th, 19th (Dot date 1907) week of the year. Therefore it may be some time before these tires are available for service in the field. Replacing the tires with ones produced the 18th (Dot date 1807) week of the year or earlier may not resolve the concern. This PI will be updated once more information is available. The intent of this information is to prevent wheel bearing misdiagnosis.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.