Replace that worn out tire with a new electric unicycle tire.

After Market Tires:

Msuper X: CHAOYANG H-666 18x3.0 tire

Msuper V3: KENDA AND CST 

Nikola: coming soon

OEM Specifications:

Msuper X: Chao Yang tire: 18X3.0/76-355, inflate 35-45 PSI

Msuper V3 - V3s+: CST tire: 18X2.5/62-355, inflate  35-45 PSI

ACM: CST 16x2.50            

Msuper V1 and V2: Chao Yang tire: 18X2.5/64-355, inflate 35-45 PSI

MCM2s, MCM3, MCM4: CST tire: 14x2.125, inflate 40-50 PSI