w211 e55 rims on w210 - What length bolt to use?

[DigitalArts]

Heya!

Found a mint-ish set of staggered OEM e55 w211 rims with 4 nice tires (50%ish tread) for $700.

I'd like to get them, as I've been looking for new tires and for staggered rims.

I know the hub bore will transfer, and the bolt pattern is the same. I know I'll have to get 12mmx1.5 bolts with an R14 ball seat on them.

But I don't know what length shank the bolts will need, does anyone know?

My goal is for the rim face to be even with the quarter panel face in the rear, so if I need a spacer for that then I'd like to include that length as well.