another question on changing oem pads/rotors

[dennis]

I've had my '93 NSX for almost 9 yrs, 58K miles, do about 1-2 (or try )controlled autocross events/yr. Need to get new pads and I would assume rotors,since this is only 2nd set of pads replaced.
(please don't laugh..)

1. Why do some people just change front rotors (different brand)?, leaving rears different? Wouldn't that cause abnormal front/rear wear?dangerous braking?
2.What are the general feelings on what I should do?
3. Seem to favor the street RM pads, poss. Dali slotted rotors,been reviewing threads,etc.
4. Also am moding my S4Avant so trying to stay within reason.
Thanks, DennisD no flames please..

 

[Larry Bastanza]

Dennis,

If you use different pads on the front and the rear you will alter the brake bias. For many folks, manily track guys, this can have a desirable effect on braking, or undesirable if you go the wrong way!! Usually this is done when you have updated your brakes (torax, brembo's etc.)and you are experimenting with different setups. If the car is used on the street sticking to the same pads front and rear is probably the best option IMO.

I use the RM's and like them, but I have been hearing the Carbotech's are really good also (plug for Andie Lin;-)), I have not tried them myself, I have plenty of pad left on my RM's (10K miles only).

If you are considering a set of RM's let me know, I have a brand new set, private me.

HTH,
LarryB

 

[NSXGOD]

Originally posted by dennis:
I've had my '93 NSX for almost 9 yrs, 58K miles, do about 1-2 (or try )controlled autocross events/yr. Need to get new pads and I would assume rotors,since this is only 2nd set of pads replaced.
(please don't laugh..)

Pads last me forever (second set) and I'm still on my first set of rotors with my Brembos - and that after 2 NSXPOs and driving there and back and 10-15 track events in between etc. It just depends upon how you drive. (I'm old and slow

)

Originally posted by dennis:

1. Why do some people just change front rotors (different brand)?, leaving rears different? Wouldn't that cause abnormal front/rear wear?dangerous braking?

Normally it is because they warped the fronts at the track and not the rears (almost never happens) and only needed to buy the fronts. Rotors do not affect the brake bias and or feel like pads do and this is not dangerous or anything like you are thinking above.

Originally posted by dennis:

2.What are the general feelings on what I should do?
3. Seem to favor the street RM pads, poss. Dali slotted rotors,been reviewing threads,etc.

Everyone on the list will have a different opinion on that

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Mark Johnson, CEO of Custodial Services @ Dali Racing, a Not For Profit Company.

[This message has been edited by NSXGOD (edited 25 April 2002).]

 

[Larry Bastanza]

Dennis,

I realized after I posted, you asked about rotors, not pads, DUH. For some the rotors wear 2-1 front to rear, you can see Ken's post about his maintenance based on track/street use here:
http://www.nsxprime.com/ubb/Forum1/HTML/004402.html

Ken's list shows this, however, depending on "how" you brake this could be different, person to person. I think that different rotors will have a minimal effect on brake bias, ICBW. I think you would see more of a difference in wear and their ability to stay straight under severe braking (eliminate shudder)if you went slotted. If you primarily use the car for the street you can check their wear and if they are within the limits you can have them cut also. If you do, just tell the machine shop to cut as little as possible off, just to get them true and flat.

HTH,
LarryB

 

[nsxtasy]

Here are my responses, which may differ from some others here.

Originally posted by dennis:
1. Why do some people just change front rotors (different brand)?, leaving rears different? Wouldn't that cause abnormal front/rear wear?dangerous braking?

I don't think that different rotors front vs rear matters. Rotors don't affect braking performance. The big difference in rotors is their ability to dissipate heat. Some aftermarket rotors may be less likely to warp or develop hot spots or crack, and thus may last longer.

Originally posted by dennis:
2.What are the general feelings on what I should do?

Rotors are like brake pads. You should replace them when they wear out - because either their thickness is less than the minimum spec, or they have hot spots or warpage resulting in severe shudder, or they have cracks large enough to feel with the edge of your fingernail. If you don't have any of those conditions, just keep using the rotors you have. If you have slight shudder, you can try having them turned (cut).

Originally posted by dennis:
3. Seem to favor the street RM pads, poss. Dali slotted rotors,been reviewing threads,etc.

I have had excellent results using the RM pads and the Powerslot slotted rotors that Dali sells.