2 handed discs can cause heat ssues which lead to warping. If you do research on the OEM 370mm discs Sub 8/TTRS/RS3 discs there are tonnes of people that have warped discs. If you wanna replace with like for like but why take the risk?
2 piece are lighter and also look better which is an added bonus as I think there is an asthetic element to brakes too....
Loads of people saying they’ve warped, when in fact it’s brake pad deposit, due to the DSG and pads. It’s more the pads than the discs that are at fault the more I read.
Not saying the discs are fantastic, can’t believe they’re not handed properly, but it’s more the pads and the way you hold the brake on with a DSG after a hard stop leaving brake pad deposits.
Skimming the disc seems to fix the issue if it starts being an issue.
I’m happy with the discs and if it happens I’ll have them skimmed and swap the Brembo pads out. When the discs need replacing however I’ll go for a proper 2 piece setup.