Segway FUGLEMAN SGW1000F-U2 Owner's Manual page 139

Loose wheel nut may cause the wheel to fall off during ride, which
may cause an accident or rollover. Always ensure that all wheel nuts
are tightened to the required torque (100-120 Nm). Do not use
lubricating oil or grease on wheel bolts / nuts. Lubricating oil or grease
may cause excessive tightening of wheel nuts, resulting in damage to
bolts or wheels. In addition, lubricating oil or grease can cause wheel
nuts to become loose and wheels may fall off, which will lead to
accident and serious injury. Remove any lubricating oil or grease from
Tire Size
Do not use tires / wheels of different sizes than recommended in this
manual as this can cause the vehicle to lose control.
Recommended tires
MAINTENANCE AND STORAGE
!
CAUTION
wheel bolts or wheel nuts.
!
WARNING
Front
27×9.00-14
27×9.00R14
127
Rear
27×11.00-14
27×11.00R14