'Please, at least leave us alone in our living rooms. Let me have my toaster and my TV and my steel-belted radials and I won't say anything. Just leave us alone.'
I looked on google and apparently 'steel belted radials' are a type of tyre. However I thought until I googled it that he was be referring in this speech to an old style radio which have radial dials, which would fit in with him naming three appliances found in the home.
What is he actually referring to? Is it a way to refer to his car, perhaps?