If you are looking for a tire for your Segway model x2, you can usually find them at good prices on Ebay. The listings below are current Ebay listings for tires for Segway model x2.
Tires for Segway X2 on Ebay:
Segway X2 Off Road Wheels And Tires
Time Remaining: 4d 6h 29m
Buy It Now for only: $370.00
pair of new segway golf tires and rims for x2 turf 20749 00001 kit with rack
Time Remaining: 7d 5h 59m
Buy It Now for only: $1,499.00