[BroDoze]

Great post(s)! Thanks! Got my 2000s waiting for my car!

[Mr. Hankey]

Originally Posted by BroDoze

Great post(s)! Thanks! Got my 2000s waiting for my car!

Smart Man! I should have done this from the get go, I feel like my car forced me to make the right decision, so at least I got smart by 3000 miles!


Just had to shuttle my daughter to and from a party - 1 hour of driving and these are still better than stock. I also learned that I would brake lightly for longer to avoid the screeching and it is going to take me a while to not unconsciously do this as these don’t squeak at all. Nada. Going to have to re-learn how to brake…and that’s not a throwaway comment, it’s legit weird to me that these don’t squeak!

Also if you’re going to install them yourself…the paint can thing mentioned in the video—I used about an 8” talk box and that is needed to hold the caliper and keep it from falling and hanging by the hydraulic line.

[Mr. Hankey]

Initial iSweep 2000 Review

I drove a 400 mile trip yesterday. I am slowly get used to this car not squealing with braking, but it is amazing! Not a peep out of the iSweeps.

Also as a result of something Carefree mentioned in a post I'm getting better at not putting my parking brake on when parked in my flat garage. Years of undoing a habit there, but I'm trying man! It was using the parking brake on a wet rotor after a rainstorm that led to the delaminated rear pad. But that delaminated rear pad led me to the iSweeps...you know what they say...a butterfly farts somewhere around the world and Mr. Hankey buys a set of iSweeps...or something to that effect.

They definitely brake better than the stock pads. On threshold braking they will get ABS to kick in sooner than the stock pads did for sure, but they are very forgiving and easy to modulate and I am already used to them so not worried about accidentally kicking in ABS (and who is threshold braking on the street other than something unexpected jumps out in front or you? I just like to know how they will act in case, and if you haven't done that in your cars, find an empty road and do some full-on emergency stops from 35 - 45 - 55 so you have the memory of where ABS kicks in, when it kicks in back off the brake ever so slightly so it turns off, will save you a few feet of stopping distance over relying on ABS alone - OK off soapbox, sorry).

Dust is brown-colored like the stock pads. If the stock pads are considered "Heavy dusting" I would classify these (iSweep 2000s) as "Low to Moderate dusting" after this trip. Honestly I don't care about dusting, no squealing, great performance. These are great pads, can't believe I didn't do them sooner! No longer cursing BMW every time I come to a stop, I love this car!

Also here's a fun fact that some might not know. The front brake ducts open into the wheel well but there is a plastic cover that BMW puts in there. If you do a track day you should remove these for better airflow....turn your wheel to full left and take out the left one then repeat for the right side. While I had the wheels off I popped these off and took a picture. Also found a couple collected sticks on one side.





As you can see there is some damage to the cover already, presumably from stuff flying off of the tire, as the tire doesn't even come close to rubbing here.

My question for the group is: Why not just leave these open all the time? . I guess a rock could get in there and damage something...but if you have a grill up front over the duct inlets then you could just take these off and leave them open...hmmm....

[TallGibbs]

Mr. Hankey RE: why not keep the brake duct coolers "open" all the time? My assumption/answer is this: the OEM stock pads need to get temperature up to a certain operating window for more optimal performance. Although the pads are "G-G" temperature rated (high coefficient of friction at both cold and warm temps), they will perform better in their desired operation window (and have less squealing).

So, if you leave the cooling duct open all the time, your street braking will have even colder temp pads and unlikely to get the pads into their designed operating window. Whereas at the track, the pads are almost always going to be exceeding their operating temps (depends on track config, of course) so the cooling ducts help to cool the pads back down.

I agree with you that damage protection is a side benefit of keeping the brake cooling duct closed (similar to putting mesh over all the radiators....you trade off protection of the equipment for lowered peak cooling ability).

[TallGibbs]

I should also add, the J866 friction rating on the OEM pad of "G-G" looks at the "normal" and "hot" rating. "Normal Friction Coefficient" is defined as the average of 4 points on the fade curve located at 200F, 250F, 300F and 400F". So, for the bottom end rating on this test, the brakes have to be at least 200F and goes up the 400F before even entering the "hot friction ratings" zone.

This helps provide some context as to why the cooling duct may keep your brake pads too cold on the street use.

[Mr. Hankey]

Originally Posted by TallGibbs

I should also add, the J866 friction rating on the OEM pad of "G-G" looks at the "normal" and "hot" rating. "Normal Friction Coefficient" is defined as the average of 4 points on the fade curve located at 200F, 250F, 300F and 400F". So, for the bottom end rating on this test, the brakes have to be at least 200F and goes up the 400F before even entering the "hot friction ratings" zone.

This helps provide some context as to why the cooling duct may keep your brake pads too cold on the street use.

That is fantastic info TallGibbs! I clearly haven't gone into that level of detail on this, but makes perfect sense, covers will stay on!