smaller spare tires is so that it does not occupy too much space in the boot, and it's for temporary use as well so it's not really a big problem.

Anyway, I see your old tires were Silverstone Synergy M5, I am hoping you are not using the same brand+model for your new tires. If yes, next round you might want to consider using other brand and models.

the Silverstone M5 is well-known among car people, because most of us avoid it :D