Front Rotor Size? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > TJ Wrangler Technical Forum > Front Rotor Size?

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineNEW!! HMF 50"-52" light bar mounting brackets!! Year End Clearance Sale! Save 20%

Reply
Unread 08-25-2005, 11:23 AM   #1
DutchmanAZ
Registered User
 
Join Date: Aug 2004
Location: Arizona
Posts: 16
Front Rotor Size?

I have a 99 TJ Sahara and need to replace the rotors. I called the local parts house and they say there are 2 different sizes: 3 3/16 inch and 3 1/16 inch .
I don't have my jeep here....does anyone know which size is considered standard or does it vary by individual jeep? I'm also assuming the measurements are for the size of the hub itself, not the rotor.
Any ideas? Thanks in advance

DutchmanAZ is offline   Reply With Quote Quick reply to this message
Unread 08-25-2005, 11:42 AM   #2
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California, California
Posts: 60,949
It's the "hat" size that varies... from the top of the rotor surface to the top surface where the stud holes are drilled. Just take one or your rotors to the parts house and sit yours and theirs down flat on the counter top. Take the size that matches your rotor's overall height when they're sitting flat on the countertop.
__________________
Getting Savvy...

Coolest offroad magazine ever! CRAWL Magazine

When you have a choice, buy American.
Jerry Bransford is online now   Reply With Quote Quick reply to this message
Unread 08-25-2005, 11:46 AM   #3
DutchmanAZ
Registered User
 
Join Date: Aug 2004
Location: Arizona
Posts: 16
Thanks Jerry. Much appreciated.
DutchmanAZ is offline   Reply With Quote Quick reply to this message
Unread 08-26-2005, 12:56 PM   #4
DutchmanAZ
Registered User
 
Join Date: Aug 2004
Location: Arizona
Posts: 16
Thanks again Jerry!
Just a warning to everyone - I called several more parts houses this morning and was promised they had the correct rotor. After comparing them with mine, it was obvious they were not correct.
Be careful about what the parts monkeys tell you!
DutchmanAZ is offline   Reply With Quote Quick reply to this message
Unread 08-26-2005, 01:03 PM   #5
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California, California
Posts: 60,949
I'm not sure if you have the taller or shorter "hat" but rather than just looking at rotors for the '99 which uses both sizes, have them pull out rotors for a '97/98 and a '00 and one of those two should be your TJ's size. Just an idea.
__________________
Getting Savvy...

Coolest offroad magazine ever! CRAWL Magazine

When you have a choice, buy American.
Jerry Bransford is online now   Reply With Quote Quick reply to this message
Unread 06-26-2007, 09:54 AM   #6
Conundrum
Registered User
 
Join Date: Jul 2005
Location: Western Maryland
Posts: 678
What about the rotor size on my TJ? Are there different sizes in my year?

*Edit*
Here's my old vs. what Advance Auto sold me:

100_1704.jpg
__________________
Matt
2001 Jeep Wrangler Sport 4.0L - Amber Fire Pearl Coat
1981 DeLorean DMC-12 VIN: 2953
Conundrum is offline   Reply With Quote Quick reply to this message
Unread 06-26-2007, 10:08 AM   #7
mrblaine
Wizard of Brakes
 
mrblaine's Avatar
1999 TJ Wrangler 
 
Join Date: Dec 2004
Location: Quail Valley, California
Posts: 26,624
Quote:
Originally Posted by Jerry Bransford
It's the "hat" size that varies... from the top of the rotor surface to the top surface where the stud holes are drilled. Just take one or your rotors to the parts house and sit yours and theirs down flat on the counter top. Take the size that matches your rotor's overall height when they're sitting flat on the countertop.
That only works comparing full cast to full cast.
__________________
I am Savvy
blackmagicbrakes.com
mrblaine is offline   Reply With Quote Quick reply to this message
Unread 06-26-2007, 10:15 AM   #8
Conundrum
Registered User
 
Join Date: Jul 2005
Location: Western Maryland
Posts: 678
So what about mine? I thought the different sizes were different years compared to my 2001.
__________________
Matt
2001 Jeep Wrangler Sport 4.0L - Amber Fire Pearl Coat
1981 DeLorean DMC-12 VIN: 2953
Conundrum is offline   Reply With Quote Quick reply to this message
Unread 06-26-2007, 11:02 AM   #9
mrblaine
Wizard of Brakes
 
mrblaine's Avatar
1999 TJ Wrangler 
 
Join Date: Dec 2004
Location: Quail Valley, California
Posts: 26,624
Quote:
Originally Posted by Conundrum
So what about mine? I thought the different sizes were different years compared to my 2001.
It's too hard to tell anything from your picture.
__________________
I am Savvy
blackmagicbrakes.com
mrblaine is offline   Reply With Quote Quick reply to this message
Unread 06-26-2007, 11:09 AM   #10
Conundrum
Registered User
 
Join Date: Jul 2005
Location: Western Maryland
Posts: 678
Well, I just put new rotors and pads on my Jeep Sunday night. After I was all done, the Jeep couldn't move. Look on the new rotor in that pic, it was rubbing on the bracket. I torqued the lug nuts on the passenger side to spec. Went ot check them again after torquing them just in case, they weren't tight enough. This happened three times before I tried to move the Jeep.
__________________
Matt
2001 Jeep Wrangler Sport 4.0L - Amber Fire Pearl Coat
1981 DeLorean DMC-12 VIN: 2953
Conundrum is offline   Reply With Quote Quick reply to this message
Unread 06-26-2007, 11:42 AM   #11
mrblaine
Wizard of Brakes
 
mrblaine's Avatar
1999 TJ Wrangler 
 
Join Date: Dec 2004
Location: Quail Valley, California
Posts: 26,624
Quote:
Originally Posted by Conundrum
Well, I just put new rotors and pads on my Jeep Sunday night. After I was all done, the Jeep couldn't move. Look on the new rotor in that pic, it was rubbing on the bracket. I torqued the lug nuts on the passenger side to spec. Went ot check them again after torquing them just in case, they weren't tight enough. This happened three times before I tried to move the Jeep.
Sounds like you figured out the problem, although I still can't figure what question you are asking nor can I tell much from your picture.
__________________
I am Savvy
blackmagicbrakes.com
mrblaine is offline   Reply With Quote Quick reply to this message
Unread 06-26-2007, 11:50 AM   #12
Jeeptim3
Registered User
2011 JK Wrangler 
 
Join Date: May 2007
Location: Wake Forest, NC
Posts: 17
I have a '99 and found out the hard way that the rotors were changed mid way through the '99 model year.. the sizes changed only slightly, but i had to buy rotors for a 2000 for them to work on my '99. I had them installed and was all proud and ready to go when i tried to drive forward and the jeep wouldn't move. Since this is my only vehicle and i was doing it during the work day when everyone else was at work - getting back to the parts store was a pain. It is worth either buying both sets and taking back the wrong ones, or take one in with you.

Overall, the process of replacing rotors and pads was much easier than i had anticipated and the money i saved doing it myself was well worth it - i just needed a BFH for the rotors.
Jeeptim3 is offline   Reply With Quote Quick reply to this message
Unread 06-26-2007, 12:16 PM   #13
92blazn
Registered User
2010 JK Wrangler 
 
Join Date: May 2004
Location: The Woodlands, TX
Posts: 8,277
Quote:
Originally Posted by Conundrum
Well, I just put new rotors and pads on my Jeep Sunday night. After I was all done, the Jeep couldn't move. Look on the new rotor in that pic, it was rubbing on the bracket. I torqued the lug nuts on the passenger side to spec. Went ot check them again after torquing them just in case, they weren't tight enough. This happened three times before I tried to move the Jeep.
Looks to long, I would say it rub.

I always remove my parts then go to parts store's that away you dont have to make 2-4 trips or get the wrong part.

Alot of them dumbazz down here that work at the part stores have no idea what the part even does! they have a computer and you give them the info, what happen to mechaniclly incline workers
__________________
2004 TJ (SOLD), 2010 4 Door 4x4 JK , 99 TJ , 99 WJ
Quote:
Originally Posted by The Mean Fish
I'm not actually going for the wheeling, I just want to watch Ed drive his Jeep. :o
92blazn is offline   Reply With Quote Quick reply to this message
Unread 06-26-2007, 12:54 PM   #14
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California, California
Posts: 60,949
Quote:
Originally Posted by iceman6533
i had the same thing happen, except i had another vehicle to use, but the rotors that fit my 99 are for a 2000, weird s**t
The rotor dimensions changed mid-'99 model year.
__________________
Getting Savvy...

Coolest offroad magazine ever! CRAWL Magazine

When you have a choice, buy American.
Jerry Bransford is online now   Reply With Quote Quick reply to this message
Unread 06-26-2007, 01:18 PM   #15
Conundrum
Registered User
 
Join Date: Jul 2005
Location: Western Maryland
Posts: 678
Then how come my '01 has a different size?
__________________
Matt
2001 Jeep Wrangler Sport 4.0L - Amber Fire Pearl Coat
1981 DeLorean DMC-12 VIN: 2953
Conundrum is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.