Watch the full video here: https://youtu.be/8DeIuk1MpHs Has Jamie just ruined his gravel bike by fitting mountain bike tyres to it? Wide gravel bike tyres are one of the most popular gravel bike upgrades you can make right now but are they just a fad or a genuine bike upgrade? We may earn a commission when purchasing through affiliate links in this description. Subscribe to Cycling Weekly here: https://www.youtube.com/user/CyclingWeekly1?sub_confirmation=1 More at: Cycling Weekly: http://www.cyclingweekly.com Facebook: https://www.facebook.com/CyclingWeekly Instagram: https://instagram.com/cyclingweeklymagazine Twitter: http://twitter.com/cyclingweekly Email: cycling@futurenet.com #cycling #bikes #bicycles