New OEM spec rotors too small, is that an issue?
06-25-13, 12:05 AM
#1
Driver
Thread Starter
New OEM spec rotors too small, is that an issue?
I bought 4 new rotors for my '06 IS350 from Adam's Rotors. As the title says, they are too small. I didn't realize how small they actually were until I swapped them out on my front driver side and my buddy noticed it. I didn't think it would really be a problem until I put my finger behind the one brake pad and noticed that the pad is not fully on the rotor. By that I mean only 75% of the pad is covering the rotor, and since the rotor is too small, there is overhang. I don't think I am able to adjust the position of the caliper, or am I?
Not trashing on Adam's Rotors what so ever, excellent service and product. I am assuming this is just a hick-up of some kind. If you guys have no solution for me I will contact Adam and see whats up.
Pics.
This pic is my old rotor underneath and my new one on top to show the size difference. It looks way worse in person.
Side by side. Looks like the original rotor has a metal ring of about an inch between the contact area and the hub. The dings are from me having to hammer it to get it loose lol
Not trashing on Adam's Rotors what so ever, excellent service and product. I am assuming this is just a hick-up of some kind. If you guys have no solution for me I will contact Adam and see whats up.
Pics.
This pic is my old rotor underneath and my new one on top to show the size difference. It looks way worse in person.
Side by side. Looks like the original rotor has a metal ring of about an inch between the contact area and the hub. The dings are from me having to hammer it to get it loose lol
06-25-13, 01:01 AM
#4
Tech Info Resource
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Why did you hammer your rotor? There are two bolt holes (see arrows) put there specifically so you don't have to do something so foolish to remove the rotors. You just thread bolts into the two holes and it pushes off the rotor without damaging the wheel bearings in the hub. When you beat on the rotor like this, you dent the bearings.
And yes, they sent you the wrong rotors for your car. Do not even try to run them.
And yes, they sent you the wrong rotors for your car. Do not even try to run them.
Last edited by lobuxracer; 06-25-13 at 01:07 AM.
06-25-13, 01:04 AM
#7
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06-25-13, 01:15 AM
#9
Driver
Thread Starter
Why did you hammer your rotor? There are two bolt holes (see arrows) put there specifically so you don't have to do something so foolish to remove the rotors. You just thread bolts into the two holes and it pushes off the rotor without damaging the wheel bearings in the hub. When you beat on the rotor like this, you dent the bearings.
And yes, they sent you the wrong rotors for your car. Do not even try to run them.
And yes, they sent you the wrong rotors for your car. Do not even try to run them.
I am actually 100% sure I ordered the right sized rotors. Just gotta find the receipt.
06-25-13, 01:18 AM
#10
Driver
Thread Starter
Why did you hammer your rotor? There are two bolt holes (see arrows) put there specifically so you don't have to do something so foolish to remove the rotors. You just thread bolts into the two holes and it pushes off the rotor without damaging the wheel bearings in the hub. When you beat on the rotor like this, you dent the bearings.
And yes, they sent you the wrong rotors for your car. Do not even try to run them.
And yes, they sent you the wrong rotors for your car. Do not even try to run them.
06-25-13, 01:18 AM
#11
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I eventually got the rotor off using a bolt hole. I hammered the rotor to try and knock it off earlier because I was unable to find a bolt that fit. I finally found a bolt in my neighbors garage and popped my rotor off.
I am actually 100% sure I ordered the right sized rotors. Just gotta find the receipt.
I am actually 100% sure I ordered the right sized rotors. Just gotta find the receipt.
Edit - rotate the hub assembly and listen for any grinding noises and feel for friction. I would really suggest having a professional inspect them though.
06-25-13, 01:34 AM
#12
Driver
Thread Starter
Based on the damage I can see to your previous rotors in the above photos, those are not safe to put back on the car. And again, as lobuxracer pointed out, I would have the hub and bearings inspected as well.
Edit - rotate the hub assembly and listen for any grinding noises and feel for friction. I would really suggest having a professional inspect them though.
Edit - rotate the hub assembly and listen for any grinding noises and feel for friction. I would really suggest having a professional inspect them though.
06-25-13, 01:39 AM
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Well as of right now when I spin the wheel (its 4:30 am so I'm not about to take the wheel off) there is a lot of friction and noise... BUT it was only frictiony and noisy after I re-attached the caliper, I may not have compressed the pistons as far as I should have. When it was just the rotor on the hub, it spun perfectly fine and noise free.
Last edited by Crispy; 06-25-13 at 02:28 AM.
06-25-13, 01:44 AM
#14
Driver
Thread Starter
I'm not a mechanic, but you should't hear any grinding or feel friction as long as the pads are not making contact with the rotor. After you get the correct rotors installed and you set the pads and calipers correctly, if you still have any friction or noise I would recommend you get it checked out promptly.
Thanks again everyone on CL, best car forum around. Appreciate it.
06-25-13, 02:17 AM
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why you hummring the old rotor......you not having a drum man...it's a disk and once you take off the pads and the cliper brake base and the washer " brass or steel " lock from the bolt it's easily get out by hands
check the pads if the pads completly contact the rotor it's ok and fit in the bearing ...don't worry about the size
if not even by 1mm........gonna make a big problem
you can use the old rotor but keep in mind you need to change the pads when you need to pun new rotor....and the brake wont be that good
if there is a machine for the old rotor do it "if it not completly damge cos the hard hummring
make sure you lose the hand brake "the padel inside the car is in open position " to remove and install the rear disk easily
check the pads if the pads completly contact the rotor it's ok and fit in the bearing ...don't worry about the size
if not even by 1mm........gonna make a big problem
you can use the old rotor but keep in mind you need to change the pads when you need to pun new rotor....and the brake wont be that good
if there is a machine for the old rotor do it "if it not completly damge cos the hard hummring
make sure you lose the hand brake "the padel inside the car is in open position " to remove and install the rear disk easily
Last edited by Jaykobo; 06-25-13 at 02:58 AM.