Join Date: Apr 2002
Location: Issaquah, WA, USA
Re: Clunking front rotors
The steel of the rotors expands and contracts due to increases and decreses in heat from braking. If the rotors were rigidly mounted, the expansion & contraction would put force on other components, (forks, calipers, etc.), which can cause handling and excessive wear problems.
As to the question about the holes getting bigger: my '01, (and '95 K1100), had replaceable inserts in the holes that were made of softer material and would wear out before the rotor carriers or rotors.
Does that answer your questions?
'01 K1200LT, totaled with 180,000 miles, 10/18/07,
'97, '99, '01, '05, '07 & '09 Iron Butt Rallies, (won the '99)
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