Was watching a race on the weekend and was thinking about the traction being generated by the front tyre when these guys were going flat chat around corners and it got me thinking about bike design. If more contact patch is important for traction during braking(hence setting up) then why is the front tyre so much narrower than the rear, especially on more powerful bikes. Surely a wider tyre would lay more rubber down. My newbie mind thought it may be because the rear tyre doesn't need to turn the bike so greater weight(ie. bigger tyre) gives more stability once moving whereas with the front tyre needing to turn, a wider tyre and more mass would make the front wheel too hard to turn once rotating at speed. Is this theory remotely close to the mark? Over to the gurus.