I will show you step by step how you can change the tire on the NAMI Burn-E.
German version here:    • NAMI Burn-E Reifenwechsel auf PMT-Reifen  

PMT 11" 90/65-6,5 Tire - Link: https://shop.halbknapp.at/products/pm...

PMT 11" 100/55-6,5 Tire - Link: https://shop.halbknapp.at/products/pm...

TR438 valve - Link: https://shop.halbknapp.at/products/gu...