Yes I am having problems keeping mine clean to. Mine are not pitted though. I dont use a wheel cleaning product because I end up cleaning the wheel like 3 or 4 times a week when it is warm out. All I use is hot water and car wash.
Are they covered under the 3 year warranty, as mine is nearly a year old?Kia seem willing to replace 1 set under warranty, but won't warranty further claims for same thing.