[sasilverbullet]

Need recommendations please:



Stock rotors

156,000 miles on the car

normal everyday street driving

no autox

no de's

occasional spirited drive out in the 'twisties'



Would like to have:



minimal brake dust

NO SQUEAL!!!

good cold grabbing power

doesn't fade if I get'em hot occasionally



THANKS EVERYONE!!! <img src="/forum/images/smilies/968/biggrin.gif" class="smilie" alt="" /> <img src="/forum/images/smilies/968/biggrin.gif" class="smilie" alt="" /> <img src="/forum/images/smilies/968/cool.gif" class="smilie" alt="" />

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[flash]

you'll get a lot of varying opinons here for sure, but there is nothing wrong with the stock pads, in stock trim, for street driving - they are a bit messy, but they work well



i am running porterfield 4S pads, and love them



less dust than stock (albeit red)



have never had a squeal (though i start with flat rotors every time, so squeals are minimized anyway)



no cold stop issues (hated that about the metalmasters on other cars, regardless of how much i liked their hot stopping and longevity)



no fading yet (not even after a couple of track sessions)

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[mike]

I agree that the stock pads are fine for the street, but I just replaced the pads on my S2 with metalmasters which I am very satisfied with so far. No squeal, minimal dust and the price was right at $32.50 from Paragon.



mike

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[sasilverbullet]

Here's some choices I can get:



Ferodo

Mintex silver

PBR deluxe

Pagid sports?



any more inputs?

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[flash]

i always loved metal masters, used them for decades, and still think they are a good pad - however, the cars were always much lighter - as with any performance pad, they are very hard pads, and will be hard on rotors, particularly if you run zimmermans - they are also well known for having a first cold stop issue - on my E30 i was really concerned that the car would not stop - they are fine once they are warm though



plenty of guys use them for sure, and swear by them (probably heavily influenced by the fact that they are cheap and throw very little dust) - after having driven 968s with both, i feel they do not stop nearly as well as the porterfields though, and the cold stop thing was unnerving enough for me to steer clear on this car and the bmws - i didn't want my other half to smack the car because the brakes weren't all there first thing

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[968rz]

sasilverbullet,

I'm looking at the same pads as you listed, the Ferodo pads is what I was going to get (in a week or so) based on the info in the catalog, there site and price. I don't know what is on my car now (black with no marks), they stop well but drive to work once and the rims are sick with dust(stops very well), I'm hoping these pads will make less dust thus less work for me. <img src="/forum/images/smilies/968/wink.gif" class="smilie" alt="" />

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[rustech]

I have the carbon/kevlar gold racing pads that Paragon sells. They are noisy when cold, throw dust, are expensive, but stop on a fricken dime. I've driven many 968's with metalmasters, and they don't stop nearly as well. Most cheap pads for any vehicle are just like the metalmasters, hard metal composite with low dust, low price, and little grip (not great for the rotors either) which is fine for a basic street application.

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[bob blackwell]

Well I have said it before and I'll say it again. Metalmaster brake pads are great replacements for street and occasional track events. No squeal, less dust and longer life than stock. In my experience the rotors have also lasted longer than when using the stock rotors. I love their performance, ther longevity and theri price. Good luck, Bob Blackwell.

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[sasilverbullet]

Ferodo/Mintex or PBR?????



I think I'll go with Ferodo - $80 after shipping from performance products.



I pulled the rear wheels off and checked the pads, they were in great shape!



So I just need the front pads along with new wear sensors...



Help me decide!!!!! (I don't have a lot of money to spend)

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[flash]

this one comes down to basic physics - the entire process is a mere conversion of kinetic energy into thermal energy



there are 3 things at play here - pad material, rotor material, and the ability of each one to disapate the heat caused by the friction of the stopping process



soft pads disapate heat well for short durations, but do so partially by shearing off material



hard pads last longer, and can withstand the heat longer, thereby stopping better, by better transferring heat to the rotor - this is a desireable feature - they also generate less dust as a rusult, also a desireable feature



where this falls down is on the rotor's ability to then release that heat - failure to accommodate the increased heat transfer of the hard pads results in parts of the rotor wearing away under the stress - this is an undesireable feature



so, it's all about friction and heat



there are 2 kinds of friction here - abrasive friction and adherant friction



abrasive friction involves the breaking of molecular bonds between the pad material and the iron in the rotor - pads that function on this basis (organic) tend to have a high wear rate and low resistance to high-temp fade



adherant friction is developed when a transfer film of the same compound as the pad material is deposited as a very thin film on the surface of the rotor - here, the friction is caused by a breaking of molecular bonds between the two like friction materials amongst themselves (one on the pad and one on the rotor)



most performance pad manufacturers now make pads that combine these two technologies - they tend to have higher coefficients of friction over a wider range of temps



a word on noise and squeal - this is caused by high frequency vibrations of the pads - the density of the material and rigidity of it plays heavily here - this is why high metallic content pads tend to make noise - the stiffer the pad, the more likely to vibrate and squeal



to choose a pad for your use, you should focus on the driving you will do - if you are doing performance driving, with higher temps, find a pad with a temp range that is suitable - if you are driving on the street, a softer pad will be a better choice for reasons of noise, and smooth and even braking



did that make it better or worse?

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[bob blackwell]

If you do not have a lot of money to spend then the PBR Metalmaster should be the obvious choice. You can also save a few dollars by not replacing the delicate, brittle, wear sensors. Just cut the wires and strip the insulation from the end and twist the wires together. As long as you check the wear of the pads visually every few months you will know when to replace the pads again without a stupid warning light to tell you. Good luck, Bob Blackwell.

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[flash]

i know this is coming off like i don't like metal masters - that is not the case - i just don't think they are the best choice for a normal street application on this car - since bob drives his car pretty hard, i'm sure they are a perfect choice for him though



if you live in a cold climate, and choose the metal masters, watch that first stop in the morning



something else, we all know that doing a "pad slap" is a bad idea, and you should always at least surface the rotors, but with any hard pad, it is important that you start with fresh rotors - they are much harder on the iron than organic pads, and starting with worn rotors is going to seriously decrease their ability to disapate the extra heat



with organic pads, you can turn the rotors once, and get away with it, but not with hard pads - this makes the cost quite a bit higher, but it is the right way to go about it



so, if budget really is the concern, and you can't afford new rotors, then stick with an organic pad for sure, and just surface the rotors (assuming they are still within spec)



pbr (the company that now makes the metal masters) also has a nice organic pad that is an upgrade from stock - i believe it is called "deluxe" - i'd look to see if they make them for the 968 - i have them on the bmw and like them

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[ether_joe]

great info guys



Hey Flash - your source for Porterfield pads? I'm finding them for $76 here:

http://www.livermoreperformance.com/porsch...ds.html#port968



that's cheaper than the stock ones from Pelican which are ~$100:

http://www.pelicanparts.com/catalog/shopca..._BRKpad_pg1.htm

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