The 235/45/17 tyres on your Omega aren't exactly low profile, nor the wheels, although the early MV6 wheels were known as Toffee wheels for a reason. Later MV6 and Elite wheels are as strong as the 16" ones, but weigh twice ss much as the original MV6 ones.
The 225/55/16s on the CD/CDX wheels fitted to plods were basically bombproof.
The wheels that suffer are those that are not only greater diameter, but also wider. To keep the weight down, these types of wheels can be lacking in material thickness, which makes them prone to buckling, cracking and other stress related damage.
Anything much over 18"/7J is potentially susceptible, and the larger those two numbers, the greater the liklihood.