Nice wheels. For your question regarding the height of the car, the answer is yes. But nothing to worry about.
Lets compare:
245/40-19"- Diameter 65.92 cm
295/25-21"- Diameter 66.11 cm
Difference in height will only be +9,5mm (0,37"), so nothing to worry about.
My previous 535d on 21". Lowered with ACS springs.
