update
went to change my brake pads today as they were WAY OVERDUE. was meant to get them done last wednesday but the panel beater guys didn't do their job right the first time. so had to push it back to this week. one thing i regret. here's why...
Rearleft rim = normal brake dust
Rearright rim = normal brake dust + metal shavings + rust shaving's from the rotor
Still don't know what happened? look at these pictures then...
overview of brake pads + rotors
left (inner) brake pad
u can see the difference between the left and right rotor. see the lip on the left one. u can see the rotor has been eaten through with metal to metal contact with the pads :(
better pic maybe?
the left inner pad worn almost to the metal backing too...
yes... only after 1 week of VERY CONSERVATIVE driving, i ate into my rotors all the way to the minimum thickness allowed (8.00mm). the original thickness is 9.00mm
with a mesuring tool i got these measurements before and after the trd black pads were used.
Rear-left = 8.25mm -> 8.20mm
Rear-right = 8.30mm -> 8.02mm
so in actual fact after 3 track days and 1 year of driving (40,000kms) of using these TRD blacks the difference was only 0.05mm. Which is damn good considering the abuse and hard driving these brakes have endured.
i regret not having to change them sooner as i would have gotten at least 2 sets of TRD blacks on these rotors before warranting a change over to new ones :( so a job that would have costed me 120 bucks costed me 280 bucks instead -_- whats worse is that i only knew something was really wrong when the rear right started making metal on metal noise. and from the outside the brakes looked very normal. i should have took the wheel off and checked inside as well. -_-
anyways, new RDA non-slotted are in now and i will guarantee that these rotors will last me more than 10 years provided the trd blacks will be still available each time.
moral of the story? stop driving ur car and check ur brakes in case they are completely worn out. it will save u ALOT of coin.
kenshin out