post #16 of Old 02-08-2013, 06:55 PM
ColdCase
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In my 2011 parts book, there is only one master cylinder part number. There are a couple more ABS control unit part numbers than can be explained by left/right hand drive, however. None are coded BR1, BR6 or BRY, so probably nothing to do with HD brakes.


2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6, 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
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post #17 of Old 02-09-2013, 12:54 PM
barry1me
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Quote:
Originally Posted by ColdCase View Post
In my 2011 parts book, there is only one master cylinder part number. There are a couple more ABS control unit part numbers than can be explained by left/right hand drive, however. None are coded BR1, BR6 or BRY, so probably nothing to do with HD brakes.
I used to design brakes for TRW so my guess is that the standard vs HD are the same size of piston in the caliper or they would have probably changed the master cylinder. I would suspect ABS tuning to be different from Standard vs HD brakes as they have a different amount of stopping force and contact area.
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post #18 of Old 02-12-2013, 03:43 PM
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Ok im confused. I just picked up our brand new left over 2012 Laredo X 4x4 hemi with tow package. The rear rotors are not vented like every tow package V8 I have seen in the past. I dont understand.
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post #19 of Old 02-12-2013, 04:13 PM
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I learned recently that none of the Laredos have HD brakes (vented rears), just the Limited and Overland V8s.

2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6, 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
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post #20 of Old 02-12-2013, 04:35 PM
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I learned recently that none of the Laredos have HD brakes (vented rears), just the Limited and Overland V8s.
Thats what I just found out too. Kinda a bummer.
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post #21 of Old 02-12-2013, 04:55 PM
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I wouldn't worry too much about it, my WK with factory tow has solid rear rotors and it tows just fine. My boat trailer has surge brakes and you can't even feel it back there. I also towed a 3000 lb cargo trailer without brakes and it stopped fine even at highway speeds.

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post #22 of Old 04-05-2013, 08:31 AM
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i have a 2012 overland hemi but i dnt see any vents on the disks so are the vents are visible????
can any one post pics of hd brakes with vents???
thanks...
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post #23 of Old 04-06-2013, 05:48 PM
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Welcome to the ownership of cars.

Here.

http://auto.howstuffworks.com/auto-p...isc-brake1.htm


Your confusing slotted for vented.
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post #24 of Old 01-06-2014, 04:01 PM
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I have a 2013 Altitude 5.7L with the standard brakes. If I am gathering this all correctly...to upgrade to the HD package...all I would need is the two rotor adapters/brackets for the front, front rotors and rear rotors? Does that sound correct? I wouldn't be doing it until I needed a rotor change up front. Would I notice a 20mm difference in rotor size?
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post #25 of Old 08-31-2014, 09:09 AM
kryogen
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So pads are the same for hd and non hd right?

What pads do you guys use after oem areworn?
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