I think rotorpros provide you with hawk pads and I've heard some really bad reviews about them. I guess the grind would explain the fact that they don't last past 15k miles.

Where did you order your rotors for 06. I just want to order rotors and not pads that they sell. I'm quite happy with the performance of oem pads and i will probably buy them again.

 

Rotorpros will sell you the rotors only. My only complaint is that I ordered drilled only and got slotted and drilled. Could'nt wait for a return-resend so I threw them on. I have drilled only for the wife's mazda 5 and they are great. BTW, could this be tire related? Sound seems more pronounced with the Blizzaks on and much less with the worn out RSA's. Put on Hankooks RH6's last week and it seems louder. May just be my imagination about the tires though...

 

woops

 

I had slotted rotors on my FX35 and had to replace them because the growl/vibration was so bad. Considering there is no real benefit of slotted rotors on a daily driver, they are not worth the irritating noise and vibration.

 

Same problem here- growling and vibration. When contacted, they said that they never had this problem before and that they don't warranty for noise. I mic'd them today and they were out so I contacted Rotopros for a warranty. They offered to replace them if I paid the shipping. Not going for slotted again, back to drilled for me.

 

My drilled and slotted Rotora BBK growled but didn't vibrate. It's just the nature of the slots. I don't think changing pads will stop it.

 

I got my rotors from rotopros too and it growls like crazy for about a year. But now its not that noisy anymore.

 

I got my rotors from rotopros too and it growls like crazy for about a year. But now its not that noisy anymore.

Wonder if the slots got all covered up so it doesn't make any noise now?

 

It makes sense that those type rotors would create that kind of effect. They're sort of like putting cheese graters on your brakes.

 

Sorry to revive this but I'm killing time at work and just found this. There is no benefit to slotted or cross-drilling rotors. Absolutely none. Unless you are driving the car on a racetrack and braking down from 150-200MPH down to 40-50 or so repeatedly, you will not see any benefit. And I'm not even sure that race teams even use slotted or drilled anymore to be honest. Either way, it's actually hindering you because the slots or holes are EATING UP your brake pads! You'll notice over time that there will be brakepad material clogging the holes and you'll also notice that if you compare to plain rotors, your pads won't last nearly as long.

The slotted or drilled rotors are aesthetic and provide no meaningful benefit

And yes your noise is coming from the pad repeatedly running over the slots in your rotor. Go back to regular rotors and your problem will go away.

Want to improve your braking with something simple? Get stainless steel brake lines and a decent street pad. Either carbotech or hawk. I'm partial to carbotech bobcats on the street as I've used them for a while now. They will help improve your braking and stainless lines make a world of difference with the feel of the pedal thus giving you more confidence to actually put the pedal down further. Most people are afraid to actually use their brakes to the potential because the pedal feels spongy and mushy. Stainless lines give you the confidence to say 'wow, the pedal feels good but I feel like I need more stopping power' thus putting the pedal down further and letting the lines/pads work to slow you down. BABK I wouldnt' bother with unless you were going forced induction. pads/lines should be more than enough unless you're running some ridiculous HP and really need stopping power for higher speeds (which you shouldn't be doing on the street anyway)

 

I just want put in my two cents. From my experience from working on cars and trucks for a partcial living as well as supporting a race car with my brother......

The standard rotors and brake pads are very minimal for lifespan and preformance. The difference in slotted and drilled are significant. The slotted rotors are for racing use only. The slots are there to cut the outer layer of pad off as it glazes from race preformance use. They are not ment for street use. The Drilled rotors are there to inhance street preformance and lifespan. They reduce heat and warping from everyday use, mainly during highway speeds. They do not eat up pads as there are no cutting edges for doing this. They displace heat at high preformance use and displace water during rain which also keeps better grip in rain.

I replace the standard rotors with drilled (only) when I switch the first set of pads out. I've used simi metalic pads on all my vehicals. They have improved almost all aspect of braking, including feel, lifespan and actual gripping preformance. I'm actually going to replace pads on my FX with ceramic ones. They will be the first set I'll have used. I hear good things but have no experience as of yet. I'll update after I can speak from experience with them...........

 

I respectfully disagree on your opinion of cross-drilled rotors. The only time I have ever used them on a street car was because they were given to me as part of a bigger brake upgrade and, in the year or so that I used them, the holes only got clogged with pad material rendering them useless to their "intended" use. The holes acting like a cheese grater and each transition from rotor surface to hole was definitely sharp enough to cut the pads and clog the material within the cross-drilled holes

Everyone has their opinion and we all know what opinions are like

Unfortunately something like this it is a trial and error thing. It's definitely a YMMV thing

 

I just want to state My post is not an opinion, like others just voicing one. The holes in crossdrilled rotors will never fill up, thats virtually impossible. You would have to fill the intire rotor from hub to rim with brake dust and the wheel spins that out by just driving. And if for some unbelievable set of circumstances like using multiple sets of organic pads to get a hole plugged I'd think you'd realize the wrong pads are being used.

 

Ok, if we're stating facts, here is a fact. The holes will clog. They don't need to be completely clogged to be rendered useless. All it takes is filling the hole enough to prevent any air from penetrating.

I've had experience myself with cross-drilled and know many racers (I don't know what "racing" and what type of car you're involved with) who won't go near them for the same reasons I've already stated.

You shouldn't be here spewing your opinion as fact. If we're doing that, FACT: CROSS DRILLED ROTORS ARE GARBAGE :roll:

I've stated my opinion and presented it as such... opinion. I don't need to restate my opinion. If you'd like to "get the last word in" so be it... I have nothing more to say.

 

Honestly, I think the other poster is confused between slotted and drilled.

Slotted does have a specific use and it's really not for street vehicals. The drilled are used at almost every auto venue with higher preformance demands as well as having the advantage over solid rotors; that being, they are also balanced which further reduce vibration AND wear to pads by keeping the braking suface clean and the reduced heat also prevents brake fluid from premature failure. All Porche 911's, BMW M's, Ferrari Enso's, Corvette ZR1's as well as many other high end cars and motorcycles including the ones used on race tracks, all come from the factory with Cross drilled rotors. One should also consider that even if every hole (which again is impossible) are filled some how, they are still there and will still disperse heat and still prevent warping of the rotor which is their main purpose, and give shorter stopping distances in emergancy as well as wet driving conditions. So in addition to all the advantages I've stated safety is another.

There is a second element to the rotors preformance and that is the pads. Brake pads are made to different specifications for different reasons. There are Organic pads that wear quickly but give very smooth and quiet preformance but also break down quickly under heavy or extreme use. There are semi-metalic with better longevity but sacrifice some smooth and quietness, full metalic which last very long but also wear down your rotors faster, and now ceramics are available and are supposed to be a better balance of all the above, which is yet to be determined. The whole braking system needs to match the intended use. As I mentioned before I chose to use semi-metalic pads to match the drilled rotors. I will be using ceramic pads for the first time with drilled rotors and bring back the feedback at some point.

I as well as any knowlegable race car driver will use drilled rotors not only on race cars but the cars our familys drive and ride in. They are a small investment with many advantages over solid rotors. I hope I have cleared up some of the confusion in here.

 

All Porche 911's, BMW M's, Ferrari Enso's, Corvette ZR1's as well as many other high end cars and motorcycles including the ones used on race tracks, all come from the factory with Cross drilled rotors.

Off the top of my head:

Formula One cars are not cross-drilled. Before you counter with ceramic and carbon compounds, if cross drilled were the way to go, they'd ALSO be using cross drilled. So, at the top of the racing world, the best drivers with the best machinery are NOT using cross-drilled rotors. FACT: cross-drilled are not worth it

Koenigsegg CCXR also not cross-drilled. FACT: cross-drilled are not worth it

GTR not cross drilled. FACT: cross-drilled are not worth it

Because it is your opinion does not make it fact

 

.... We are talking about our FX35/45's in here AND street driving with improved braking safety and performance, right? And trying to answer this guys question about his slotted rotor issue. Not 300mph formula race cars that have entirely unique braking systems designed for their racing only use. OR attacking real information as opposed to just trying to justify a completely incorrect statement. Any street vehical brake system would not work on forumula racing tracks. LOL... as far as these two posters believing they have any facts to contribute is quite amusing to me as well I'm sure to anyone else reading this!

 

Your "facts" are laughable. You sound like a hack and I pity the fool that takes your opinion as fact

 

LOL... as far as these two posters believing they have any facts to contribute is quite amusing to me as well I'm sure to anyone else reading this!

The amusing thing is that both Kieran and Not stated that they were simply expressing their opinions about brake rotors; however you made it a point to tell them that your post was "not an opinion", and therefore fact. Interestingly, you've provided no source of unbiased data that would prove your point to be fact any more than their points. So as it stands, you have all express your OWN opinions. Good job.

And just to point out a fact (since we're on the topic), kieran has provided quite a large amount of helpful information to the Org over the past several years, most noteably on the topic of track racing, of which he is an instructor. As much as I can figure, they don't pull morons off the street and make them instructors at a track without having some amount of proficiency on that subject matter. I'll give him a little credit for having personal experience to back up his comments.

 

As much as I can figure, they don't pull morons off the street and make them instructors at a track

****! There goes MY dream job...

 

Of course having an opinion is as simple as it can get, expressing it with intelligence is harder to come by. Its pretty easy to just spew anything you want and want to believe it's fact or not. What is truely amusing is we are all here to supposedly help each other with our information/opinion, facts (made up or real), and if there is someone teaching that the world is flat (some one will choose to believe it). I added my two cents to help answer this post not pretend I know something I don't and, that knowlege is power and the only real fact.