Originally Posted by
trail_monkey
So why do some people have issues and others do not?
Most rims are anodized, and the coating protects the rim. Earlier version of the C24 are not anodized and have bare Al, which can be readily attacked. It's unclear if Shimano has anodized the newer versions.
Summary:
1) It only effects Shimano rims.
2) It may not even effect ALL Shimano rims.
3) It may depend on other factors as well.
I personally have DA 9000 C24 rims with tubeless OS. Before I installed the wheels, throughly coated the interior with Boeshield to protect the rim.