4 years and no maintenance so far. Although one time I attempted to purchase the spare parts to have on hand in the event I need to change out the tire and recall it was difficult to source the parts from aircraft spruce. Even they couldn’t say exactly what was needed or provide the part numbers for purchase. I recall thinking the heck with it, i’d Just buy a whole new wheel and tire when the time comes. At a minimum I recall a new O-Ring is required when reassembling the two wheel halves.
EAA Tech Counselor
RV-9A #92103 - N803DK
G3X, Superior XO-320, Dual Pmags, Catto 3B
1974 Bellanca Super Viking - N16AW - Flying
RV-8 #83565 - N184DK - building
1968 Mooney M20C - N6801N - Sold
1956 C-182 - N744W - Sold