The most common problem of inside tire wear is toe-out.
Visualize this. When riding with high camber the tire rolls with a greater amount of pressure on the inside than the outside. Obviously the tire will wear more there than on the outside, BUT, although the wear will be there, there will not be more wear. In other words, instead of wearing out in the center over 40,000 miles the center of wear will move but not necessarily any faster.
In reality it does wear faster due to camber, but this is mostly due to the smaller footprint touching the road.
On the other hand toe problems force the tire to be scrubbed across the road, tearing miles of wear. Almost all camber wear can be compensated for with toe correction. NONE of this means it will ride right, but inside or outside wear that occurs visably is likely due to toe and definitely correctable with toe.
Bosch Master, ASE Master, L1
33 years MB technician