We have caused a mismatch with our recent computer software upgrade. The tires on our little Japanese auto no longer work.

It will become necessary, I am guessing, to replace the present set of tires with the former by my own hand. We consider the difficulty of this task. Is it truly something which can be done at home?

At no time do any of us contemplate how computer software in the home interacts with rubber on the road. It is just understood, so no sense worrying about.