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Rad Power Bikes RadRover 6 Plus tires

The Rad Power Bikes RadRover 6 Plus runs 98-559 in ETRTO sizing, the width in millimetres followed by the rim bead seat diameter.

Every fitment

GenerationTrimWheelTire sizeInch size
CurrentRadRover 6 Plus (Kenda Juggernaut)26in98-55926x4.00

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 part98-55926x4.00Width, mmRim bead seat diameter, mmSame size, inch system

What changes on this bike

The RadRover 6 Plus is a fat bike on Kenda Juggernaut 26 x 4in tires; Kenda's own table gives that size as 98-559, not the 100-559 often quoted by sellers.

Rad's version is a wire-bead, 30 tpi build with a puncture-resistant liner, and the same part is listed for every RadRover model year, so one replacement fits old and new bikes.

Kenda caps the 26x4.00 Juggernaut at 30 psi; the RadRover's hub motor sits in the rear wheel, so a rear puncture means a heavier wheel removal than on a mid-drive bike.

No tires listed against this fitment yet. Product specifications are published from each manufacturer's own data and that work is not finished for 98-559. Match or exceed every figure in the table above and you cannot go far wrong.

Where these figures come from

  • Rad Power Bikes spare part, Kenda Juggernaut 26" x 4" (Compatibility RadRover (all model years); Current Model Compatibility RadRover 6 Plus; wire bead, 30 TPI): https://www.radpowerbikes.com/products/kenda-juggernaut-26-x-4-tire checked October 5, 2026
  • Electric Bike Report, RadRover 6 Plus review (Tires: Kenda Juggernaut 26" x 4", puncture resistant liner): https://electricbikereport.com/rad-power-bikes-radrover-6-review/ checked October 5, 2026
  • Kenda Juggernaut size table (26x4.00 (98-559)): https://bicycle.kendatire.com/it-it/trova-un-pneumatico/bicicletta/fat-tires/juggernaut/ 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.

Common questions

What size tires does the Rad Power Bikes RadRover 6 Plus take?
It runs 98-559. 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 Rad Power Bikes RadRover 6 Plus?
Only at 98-559 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.