AH SRi-T front brakes

A mate of mine has an AH CD Astra and is wanting to use my old SRi-T 308mm front brakes on his car.

Does anyone know if it's possible to fit the bigger 308mm front brakes behind the factory 15inch alloy wheels?

Easiest way measure from centre to outside of caliper

I doubt they would though, would need 16 min I reckon

280 (stock on his) require minimum 15"
308's require minimum 16"
321's require minimum 17"

Thanks for the feedback, I suspected you would probably need 16's to be able to fit them. Maybe it's a good time for my mate to upgrade his wheels!