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:
pair of new segway golf tires and rims for x2 turf 20749 00001 kit with rack
Time Remaining: 18h 57m
Buy It Now for only: $1,499.00
NEW SEGWAY x2 Tire Wheel Kit 1 ONE OEM AUTHORIZED DEALER
Time Remaining: 20d 1h 52m
Buy It Now for only: $295.00