The 5 in 5x115 is the number of studs. The 115 is the distance between 2 studs diagonally from each other.There must be a difference in malibus because tirerack.com says my 99 is 5x115 w/ high offset, so not all malibus are not created equal. The difference between 110 and 115 is for the hub correct?
If you are talking about the adapters that change your bolt pattern, they may not work with these cars due to the high offset that they already run. All of the adapters that I have seen are at least 1" thick.One thing i hadn't thought of was hub centric adapters. Has anyone used these or know a good brand for these cars?