Below you can find the Around 2000 b.c. solid ones were replaced with lighter faster spoked ones Jeopardy Words Answer. The answer to Around 2000 b.c. solid ones were replaced with lighter faster spoked ones has 6 letters. This clue belongs to the Discoveries category and is part of Jeopardy Word Level 418. If you scroll near the bottom you will find other clues and answers part of level 418