Vittoria Bomboloni 29+ x 3.0 TNT MTB Tyre - Fat Bike / MTB / Snow Bike - TRVittoria Bomboloni 29+ x 3. 0 TNT MTB Tyre Fat Bike MTB Snow Bike TR Bomboloni is your choice for fast rolling, multi condition performance, on Plus and Fat bikes. Italian for Donut, Bomboloni delivers the sweet traction you expect, without the guilt of the slower rolling competitors. With a World Championship proven TNT bead, dual compound, sidewall protection, and premium 120 TPI casing, the Bomboloni is sure to satisfy. Now you can have your cake,