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Cannondale Tesoro Neo X tires

The Cannondale Tesoro Neo X runs 55-584 and 55-622 in ETRTO sizing, the width in millimetres followed by the rim bead seat diameter. The Gazelle Ultimate C380 takes the same size.

Every fitment

GenerationTrimWheelTire sizeInch size
CurrentTesoro Neo X 1 / X 2, sizes M-XL (Continental Race King)29in55-62229x2.20
CurrentTesoro Neo X 1 / X 2, size S (Continental Race King)27.5in55-58427.5x2.20
CurrentTesoro Neo X Speed 2021 (Schwalbe Big Ben Plus)28in55-62228x2.15

Your own placard is the authority. You will find it on the printed on the tire sidewall, next to the pressure range. Where it disagrees with this page, it wins. Match or exceed the size, load index, speed rating and construction class it gives, and use its pressure figure rather than anything printed on the tire.

The fitment, part by part55-62229x2.20Width, mmRim bead seat diameter, mmSame size, inch system

What changes on this bike

Cannondale splits the Tesoro Neo X by frame size: the small frame rolls on 27.5in wheels and medium upward on 29in, both with a 2.2in Continental Race King.

Race King is a low, fast-rolling cross-country tread, which favours gravel paths and dry roads over loaded touring in the wet.

The 2021 Tesoro Neo X Speed, which Cannondale sold as an S-pedelec with 28 mph assist, used a 55-622 Schwalbe Big Ben Plus with Green Guard and SnakeSkin; a speed pedelec needs ECE-R75 certified tires, and Schwalbe rates the Big Ben Plus E-50 with that approval.

No tires listed against this fitment yet. Product specifications are published from each manufacturer's own data and that work is not finished for 55-622. Match or exceed every figure in the table above and you cannot go far wrong.

Where these figures come from

  • Cannondale US spec page, Tesoro Neo X 1 (Tires: Continental Race King 29x2.2" 55-622 (M,L) / 27.5x2.2" 55-584 (S)): https://www.cannondale.com/en-us/bikes/electric/e-touring/tesoro-neo-x/tesoro-neo-x-1 checked October 5, 2026
  • Cannondale GB spec page, Tesoro Neo X 2 (Tires: Continental Race King, 27.5x2.20" 55-584 (SM), 29x2.20" 55-622 (MD-XL)): https://www.cannondale.com/en-gb/bikes/electric/e-touring/tesoro-neo-x/tesoro-neo-x-2 checked October 5, 2026
  • Cannondale spec page, Tesoro Neo X Speed, model year 2021 (Tires: Schwalbe Big Ben Plus Performance, Green Guard, Snake Skin, 55-622 - 28x2.15"): https://www.cannondale.com/en/bikes/electric/e-urban/tesoro-neo-x/tesoro-neo-x-speed-c66852m checked October 5, 2026

Including the manufacturer's own published figure. Neither source is standing next to your vehicle, which is why the placard still wins.

Other bikes on the same size

Common questions

What size tires does the Cannondale Tesoro Neo X take?
It runs 55-584 and 55-622. The exact fitment for your bike is on Printed on the tire sidewall, next to the pressure range.
Can I fit a cheaper tire to a Cannondale Tesoro Neo X?
Only at 55-622 or better. That is the figure to hold: a tire below the load index, the speed rating or the construction class is not a cheaper one, it is the wrong one.