After 75.000 km on my 1999 Road king classic , here are some coments, new oil at every 6000 km, oilfilter at every 12000 km, gearoil at every 12000 km , chaincase\clutcoil at every 12000 km , 8 sparkplugs ,1 complete set of brakepads at 50000 km,tires 12000 km rear, and the front tire 20.000 km , greasing the bike according to the owners manual ,the bike has the 88cui 1450cc engine unbalanced , no problems at all, JPO. norway.