Interesting what BREMBO SAY HERE.

http://www.tirerack.com/brakes/brakes.jsp?make=Brembo&model=Sport+Drilled+Rotor


And Jag says here (scrool to bottom)

http://www.jaguarusa.com/us/en/vehicles/xk/performance/performance.htm

 

Thanks Halo and JeffC for confirming the facts.

I have nothing against cosmetic mods. I just don't like it when they are viewed as performance mods, when in fact they usually deteriorate performance.

People are free to do as they please. We're just here to give the facts.

Enjoy the ride everyone.

Grip, I sure hope a good set of aftermarket performance pads comes out for the Murano. If Porterfield R4S ever come out, I'm sure you'll love them. A good street pad and synthetic brake fluid will do wonders for the braking feel.

 

WHAT THE FACTS ARE? IS WHAT I AM TRY TO LEARN. ARE YOU REALLY SURE OF YOURS? I don't know yet.

 

I have no need to defend my posts, as they have already been confirmed by other members. Having been part of the import tuner crowd in the past, I have had experience with all these mods. That is how I learned my facts about performance modifications.

No one has any obligation to take what I post seriously. Its your money, spend it as you see fit. Its clear you enjoy having a stylish Murano, and thats great.

I suggest refraining from caps lock. Some people may find that rude.

As for the Jag post, it does not say a cross drilled rotor leads to better performance. A "vented" rotor refers the cooling vanes between the discs, not the cross drilled holes.

 

The Jag site says they brakes are vented to improve cooling. This is 100% accurate. Vented is better than solid. The MO is the only SUV I know of that has vented all around, most don't use vented disks in the back.

But, even Brembo who stands to profit from selling these things doesn't lie: Cross drilling is for show. Giving a place for gases to go is all well and good, but the kind of driving where this would be an issue is exactly the kind of driving that is going to overheat them and even Brembo (in your link) says to not overheat them.

I also have no issue with people putting cross drilled rotors, big wings, stickers, LED tail lamps on their cars. I don't even care that they justify it to themselves as a performance improvement. However, I do take issue with people who try to justify to others of the improvement when it's BS.

If you put a turbo on your MO and blow the CVT, well you're broken down at the side of the road. If you have a brake disk fail on you going around a corner at speed I think the results could be much worse.

 

ERIC L Not trying to be rude or attack your post, no need to defend them, I am just trying to lean the facts. The info I am reading is even contradictory to itself. Please don't be offended as absolutely None intended. I used caps to make it clear I had hope that i have heard so much about brake squall and Judder ans warping and a posted with an 05 and less than 1000 mile already getting warped that I feel the undrilled and un slotted must not be cutting it. So I am trying to find the best facts I can. Again, Please don't be offended. Particularly by a caps lock or bold type.

 

I think, I'll just drop the subject, sorry guys for getting the temps up.

All I did was say "Sounds Just like what the Doctor Ordered" in response to anothers post.


SORRY!

(Hope it was all right to use caps.) Just for emphasis not for insult or rudeness.

 

No offense taken, although your sarcasm is noted. I was merely responding to your query of whether I am sure about what I am post. My answer is absolutely.

I already posted what I think is the best solution for the Murano's braking issues in previous posts.

I wonder whether the warping issues are a result of overly aggressive test drives. I have no doubt the salesman will tell customers to slam on the brakes to demonstrate the brake assist.

 

Grip,

The Brembo/Tire Rack info site is just typical marketing BS. Note that they do allude to the fact that cross-drilled rotors are prone to cracking under track conditions.

"The Brembo Sport rotor’s cross-drilled holes are bi-angle chamfered at the rotor’s outer surfaces to help reduce the cracking caused by repeated, high stress, high temperature brake applications."

Also, they do not warrantee them if used on a track or with racing compound pads on the street. In that case, how good can they be? I've seen several cross drilled rotors crack under autocross conditions.

The Jag web site makes no performance claims for their cross-drilled rotors, but they will happily take your $500 dollars.

Caveat Emptor.

JeffC

 

Now that's a thought. I feel the MO is a grand and great vehicle and that some of the stuff is nit picky ,but not all. The Alternator, CVT and Brakes could be real difficulties l

By natue I am a PUNer and a smart ass so not too much I want to do about it at my age.

 

The holes in the pic i posted are chamfered, so you can make of that what you will.

As to warping, I know it's a strict no-no to put on your parking brake after track or AutoX time. But this would only apply to rear rotor warping so what do I know.

 

Sure seems like any part with an induced stress riser, like a hole, a slot or an internal channel like a vent could be a cause for cracking particularly if the part is subjected to rapid heating and mechanical load.

It was noted that the MO is the only SUV with vents all the way around maybe thats the problem for warping. Surely the Mo is not the heavest SUV.

 

The holes in the pic i posted are chamfered, so you can make of that what you will.

As to warping, I know it's a strict no-no to put on your parking brake after track or AutoX time. But this would only apply to rear rotor warping so what do I know.

To add to this, initially a new pad and rotor combo is particularly succeptible to warpage since the two surfaces have not been properly heat cycled and mated yet. This is esp true of the aggressive aftermarket performance pads. I remember Porterfield specifically recommending a very intense brake pad break in procedure requiring you to fade the pads on a series of moderate-hard stops for proper mating.

As for vented discs, they are vented for additional cooling. My understanding of rotor warping is that it is due to excessive heat buildup or improper brake pad installation.

 

I go read up on Porterfield, sound good.

 

My my has this thread taken on a life of its own.

but anyway.

i found out that my rear brake pads were down to about %20
And so need to be replaced soon.
My front pads are at %70.
So after about 28000 miles, the rear pads are almost gone... interesting, it took like twice as long on my Explorer, though the service guy said these brakes are much more along the lines of preformance brakes and so will give you better stopping power, but more wear.

-Nerf

 

Nfilippelli

I had that same type of wear on my G35 where th rear wore more than the front and it's rear drive! I found it interesting, first car I ever had that wore the rears out at a faster rate that the front.

Maybe it's a Nissan thing.

 

I have noticed my Murano rotors appear rusty on the surface and my VW passat rotors are clean and shiny. The Murano rotors may be cast iron only and the VW rotors have an alloy in them. Another observation is the Murano brakes create very little brake dust on the wheels while the VW's wheels get dirty very quickly from the brake dust. The brake dust I assume is mostly a function of the brake pad material.

 

Nfilippelli

I had that same type of wear on my G35 where th rear wore more than the front and it's rear drive! I found it interesting, first car I ever had that wore the rears out at a faster rate that the front.

Maybe it's a Nissan thing.

It's Nissan's electronic brake force assist doing it's job.

 

Tell me more, including if it works more on the rear than the front. Is this the emergency full brake actuation like I have on my Mercedes.?

PS just looking at a Mercedes SL500 with vent holes in the rotors, no cracks radiating from the holes I asked the owner if he had any brake problems, squeals, judder etc. he said no, so we got talking and I got to drive it!!!! He said, "Go ahead stomp it" he meant the gas and later the brakes. Wow Sweet machine, I was drooling.

PS LOTS OF GET UP AND GO AND SLOW DOWN AND STOP. (uh oh, that caps lock again)

 

The Murano comes standard with brake assist, which is the same idea as the electronic panic assist on Mercedes.

 

OK! if thats what you are talking about I had it on the G35also, however I never panic breaked in my life to use it.

So I was and am still surprised my G35 wore the rears out so far ahead of the fronts. As I "think" Nfilippelli may have been about his wear front to back.

 

Sounds like either Nissan made a poor choice for their brake pad material, or the electronic brakeforce distribution is pretty aggressive on the rear brakes. Normally I would suspect a bad proportioning valve, but on the Murano its controlled by the computer as well (part of the EBD).