Blown CIM?

[Ether]

Originally Posted by evand4567

We tested the resistance with an ohmmeter and found the degraded ones to be between .3 and .5

.3 and .5 what? ohms? milliohms?

while the new CIM varied between 5-15

5-15 what?

Now for the unscientific part: we direct drove a wheel on and found a significant reduction in RPM noticeable to the naked eye. The sound motor sounded significantly slower as well.

That's arguably more scientific than measuring resistance.