That is a very nice car dude! They're the wheels i'd get if I ever upgraded them. Are you still using one of those huge prams for younger babies? When we had a little one we suffered the same problem, but now she's two we only rarely take a little buggy out with us, it even fits between the front and back seats leaving the boot empty if needs be.
But, if you're bored of the car anyway, go aheah and buy a BMW. I'd change my car more often if I was allowed. :)