better rear brakes

Richard Hoffman
Sat, 24 May 2003 00:09:45 -0700

Motorcycles come with cross drilled rotors primarily for weight reduction -
on these vehicles, there is not a lot of mass to slow so heat dissispation
is somewhat less of a concern.  However, by lowering the rotational intertia
at each wheel, the bike accelerates and stops more quickly.
Also note that motorcycle rotors are typically very thin, low mass, and will
accumulate and dissipate heat at a much quicker rate than automotive rotors.
I find this an interesting comparison.
If drilled rotors are good for motorcycles, then why not use them on cars?
If vented rotors are good for cars, then why not use them on motorcycles?
1990 CQ 220,002 miles on flat faced rotors
1970 100LS 2-dr 46,302 miles on flat faced (inboard) rotors

----- Original Message -----
From: "CL Wong" <>
To: "AudiFans" <>
Cc: "200q" <>
Sent: Friday, May 23, 2003 4:45 PM
Subject: better rear brakes

> >"If slots/holes are so good, why is there only one
> automotive
> >manufacturer who uses them?"(Porsche.)
> I noticed the other day a very nice Mercedes S class
> big body sedan driven by a senior citizen.  This
> beautiful car was sporting cross drilled front rotors
> and looked to be fresh from the showroom floor.
> Also, have you ever wondered why just about all
> motorcycles come with cross drilled rotors?
> Chi
> 200Q20 sys2UFO
> wondering if my rear proportioning valve is dead since
> I have no appreciable rear pad wear in 5 years of
> ownership... at least the parking brakes work.
> __________________________________
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo.