EVOSport slotted 2 piece front and rear rotors
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CLK BS
EVOSport slotted 2 piece front and rear rotors
Well, after a summer of waiting, I finally got my set of slotted EVOsport 2 piece rotors, and I installed them last week. Big thanks to Simon @ EVO and SMP for good install directions.
Fronts side by side:
OEM Front weight: This is from my bathroom scale, not the most accurate, but the importance is the difference in weight.
EVO:
Installed:
OEM Rear:
EVO:
Interesting how the rear weight saving is only 4 lbs and not 7, the fronts are ~6 lbs.
Fronts side by side:
OEM Front weight: This is from my bathroom scale, not the most accurate, but the importance is the difference in weight.
EVO:
Installed:
OEM Rear:
EVO:
Interesting how the rear weight saving is only 4 lbs and not 7, the fronts are ~6 lbs.
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CLK BS
Another interesting thing is about the thickness of the rotors:
Fronts side by side:
Rear side by side:
I didn't have a caliper, but with a rough ruler measurement, the EVO fronts are slightly thinner on the inside, about 4 mm total? The rears are about the same. Maybe this is why the front weight difference was more pronounced.
I want to emphasize that this is just a simple observation, not to take anything away from the EVO or the OEM rotors. Because of possible different metallurgy, different ventilations, different rotor hat constructions, and the fact that the EVOs are slotted and NOT drilled (which retains more metal and contact surface), I wouldn't conclude that thicker is simply better.
Fronts side by side:
Rear side by side:
I didn't have a caliper, but with a rough ruler measurement, the EVO fronts are slightly thinner on the inside, about 4 mm total? The rears are about the same. Maybe this is why the front weight difference was more pronounced.
I want to emphasize that this is just a simple observation, not to take anything away from the EVO or the OEM rotors. Because of possible different metallurgy, different ventilations, different rotor hat constructions, and the fact that the EVOs are slotted and NOT drilled (which retains more metal and contact surface), I wouldn't conclude that thicker is simply better.
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CLK BS
So is there any change in driving?
Well, I've taken out ~12 lbs in the front axel and ~8 lbs in the rear. Seat of pants is slightly increased responsiveness, to both throttle and steer. Steering effort has somewhat decreased and it seemed a bit easier to place the car on the road.
The braking seems a bit more responsive as well, with more "bite". There's more squealing when the brakes heat up -- I'm not sure if that's normal? Didn't have much squealing with the oem rotors. I haven't driven it on track or any downhills yet so I can't say much about fade.
Overall I'm pleased with the EVO rotors, and I think going to a slotted rotor is definitely the way to go, especially for track days and aggressive driving.
Well, I've taken out ~12 lbs in the front axel and ~8 lbs in the rear. Seat of pants is slightly increased responsiveness, to both throttle and steer. Steering effort has somewhat decreased and it seemed a bit easier to place the car on the road.
The braking seems a bit more responsive as well, with more "bite". There's more squealing when the brakes heat up -- I'm not sure if that's normal? Didn't have much squealing with the oem rotors. I haven't driven it on track or any downhills yet so I can't say much about fade.
Overall I'm pleased with the EVO rotors, and I think going to a slotted rotor is definitely the way to go, especially for track days and aggressive driving.
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CLK BS
If money was no concern and I get to do it over again, I'd get a set of CCWs with custom width and offsets, saving the trouble of spacers.
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CLK BS
I do know that for track use, slotted > drilled.
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Bish
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'14 ML BT
Fissures would be a fair description. Their numbers and the lighting made me wonder if they were going to de-laminate a top layer of the rotor.
I really felt more comfortable with the cracks I get in mine.
Of course I'm no metallurgist, so what do I know.
I really felt more comfortable with the cracks I get in mine.
Of course I'm no metallurgist, so what do I know.
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CLK BS
It's been a while since I spoke to Simon but I believe the evo rotors are blanks which then gets either drilled or slotted? Theoretically they should be able to sell you blanks but I'm not sure if they do. Best way is to ask Evo directly.
Last edited by GeoGeo; Nov 3, 2010 at 07:49 PM.
