Fr3AkAzOiD
Fr3AkAzOiD New Reader
6/8/14 11:31 p.m.

Need new front rotors for the Malibu for the track (mostly VIR)and have been running the GM rotors ($60). Wanted to know if the Stoptech slotted rotors ($90) or Centric High Carbon Alloy Brake Disc ($60) would be a better option.

As is I've been having to change rotors at every other front brake pad change.

With a 3300 pound car you can imagine that's fairly often.

If anyone has any other options for rotors I'm all ears.

I'm using Carbotech XP10 pads up front.

Also, should I go slotted or blank?

Heat buildup is my main concern but don't know how much different rotors would make a difference in that.

Thanks in advance

dean1484
dean1484 GRM+ Memberand UltimaDork
6/9/14 7:08 a.m.

I have centric in my 924s and they have been fine. No track days but for aggresive street driving they have been fine

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
6/9/14 10:01 a.m.

If you're worried about heat buildup, work on your venting.

I'd go with slotted over blank, but it's not a critical difference.

Mmadness
Mmadness HalfDork
6/9/14 12:05 p.m.

I've heard that in addition to making more noise, the slotted rotors also wear the pads faster. Like Keith said, venting will be more effective than the slotted rotors and in the long run will be cheaper. If you spend $40 on venting that will last forever whereas slotted rotors will cost and extra $60 every time they need to be replaced.

Sky_Render
Sky_Render Dork
6/9/14 1:04 p.m.

I'd get some solid Centric rotors.

Fr3AkAzOiD
Fr3AkAzOiD New Reader
6/9/14 1:39 p.m.

Thanks everyone, since NASA TT doesn't add any points for venting (none that I saw at least) and I'm pressing my luck to get 4 track days (at least 1 raining) from the front pads as is I will go with the solids and look around to get some venting ideas.

motomoron
motomoron SuperDork
6/9/14 2:28 p.m.

I've run solid, cheap European blanks w/ stock calipers, Performance Friction PFC-01 pads, Motul 600 fluid and ducting on my 3000#+ e36 M3 for years and they're great.

I don't see slots as a plus.

Mr_Clutch42
Mr_Clutch42 Reader
6/9/14 3:41 p.m.

Slotted rotors look cooler.

But for performance, I actually gained a ton more bite and quite significant amount of stopping power from changing to EBC slotted rotors and Autozone gold pads for my old 97 Civic. It could be because that car is lighter than most street cars.

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
6/9/14 4:29 p.m.

Carroll Smith says that slotted rotors wipe the incandescent top layer off the pads, leading to better braking. I've never argued with him :)

wbjones
wbjones UltimaDork
6/9/14 6:44 p.m.

IIRC … seems I remember reading somewhere, that the pad manufacturers have said that drilled/slotted rotors aren't necessary anymore

Mmadness
Mmadness HalfDork
6/9/14 7:09 p.m.
Fr3AkAzOiD wrote: Thanks everyone, since NASA TT doesn't add any points for venting (none that I saw at least) and I'm pressing my luck to get 4 track days (at least 1 raining) from the front pads as is I will go with the solids and look around to get some venting ideas.

On black Friday, I like to stock up for the season, the big autoparts stores (Autozone, Advanced Auto Parts, etc.) have offered up to 60% off in the past with free shipping! In other words, the brake rotors are close to being sold for scrap metal value.

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