So I was changing my pads today in order to find out why whey grind and I noticed something. I don't seem to have a screw to hold my rotors to the hub assembly. Also the rotor doesn't have "20 MM" stamped into the side of it any where. I messured the thinkness and it was 22mm so that part is right. But it just seems odd.

 

Don't need the screws once the wheels are torqued on.
They just keep the brake rotors from falling on your toes when you remove your wheels.


-Ted

 

you should have 2 screws holding the rotor

 

I figured they where wrong, i KNEW the rears had them but i couldn't remember if the fronts did or not.

Thanks!

 

Who's THEY?..the Thing about them Screws:is that they Tend to Either break/snap or Strip the heads out when trying to get the Damn things out...As TED said,you Really DON'T need them..Unless you are going to be driving around with Loose Wheels and Loose wheel nuts...Think about it.You Put the Wheel back on,Tighten down FIVE wheel nuts ON studs that the rotor Sits ON.The wheel studs pass through the Holes of the rotor.If that doesn't HOLD the rotor on..then really Those little Screws seem Pretty Useless...the Studs hold the Rotor into Place.The Wheel holds the Rotor into Place...The only thing that the Screws do,is **** you OFF when you are Changing the Damn rotors!...and That is Why the damn Rotors STICK to the HUBS!.They are on there and Create Corrosion in between the rotor and Hub,and you have to CUT the Friggers off,or get the hubs Pressed out!.....Two Little Screws?...Fugg-get-about-it!..you don't need them!

 

the only reason those screws are there is to easy assembly at the factory when they were built. besides they are a pain in the *** i've usually needed an impact screwdriver to get them out

 

Mine stripped when I tried to take them out, I just drilled those ******* out.

 

Mrstyx..... wow, the "they" that i mentioned where actually the rotors them selves. "I figured THEY (the rotors), where wrong"

I wasn't sure about the brake assembly, because the rotors didn't have the min thickness mark or the holes for the screws to hold it to the hub. I have since found my calipers(measuring calipers) and measured the damn things. It looks like they are just el cheapo rotors, but the sizes match 21.85mm thick.

I know that the screw are a PITA, that is why i bought my impact screw driver, because I fucked up the left rear ones about 2 years ago. But I couldn't remember if the fronts had them.
As far as falling off, I drive all the time with just 3 of the 4 wheels bolted on and If i didn't have the screws on then I lose my rotors
Seriously, my rotors on this car are very loose just a bump and they move, so when I was spining my brakes after the pads went on, they (the rotors) would wobble slightly and would rub my caliper a bit. I had to use the lug nuts to hold down the rotor to check for clearence.

To be honest i would rather have the screws in.

 

I just usually drill the screws out and then never put them back in. It's just too much of a pain in the butt.

The rotor is hub centric. It centers on the tapered hub. However often corrosion and stuff gets back there which needs to be cleaned to make the rotor run true.

 

The calipers, the caliper brackets, the rotor hat and the studs stop the rotors from falling off.