I wonder which expression is correct in my examples. I know the better way to say them is "Tom's bike" and "Tom's home", but I am still curious about the form in the examples as it is quite common in cases where the name are just too long to use apostrophe.
(1) I am going to ride the bike of Tom.
(2) I am going to ride the bike of Tom's.
(3) I am going to the home of Tom.
(4) I am going to the home of Tom's.