Split and self mount Rear tires

[kk2002s]

So I need to replace rear tires and would like to buy from TireRack and I'm fretting at who could mount. So I started thinking, why could I not split the wheels and mount them myself
Isn't that the point of 2 piece rims?
Split the rim, slide the old tires off, slide the new on, re-bolt the 2 pieces back together, take them to get balanced

Anyone see faults in this idea?

I have searched several times trying to get torque values for these BBS Sport Design rims and they vary from 20/ft lbs to 40