The wheel for the Yardbeast 2090 can be bought at the following link below: 
https://www.amazon.com/Marathon-15x6-50-6-Pneumatic-Filled-Bearings/dp/B004DTTEHE/ref=sr_1_1?ie=UTF8&qid=1485376295&sr=8-1&keywords=15x6.50+wheel
If you have problems ordering this wheel, please contact us. 
Prices shown may vary by supplier price change.