Securing rotors with screws

[lt1cutlass]

Anyone see any advantages or disadvantages to securing brake rotors to hub/axles like most new vehicles? My 72 cutlass has c5 front and ls1 rear brakes. Would think drilling ,countersinking and tapping the rotors and hubs to secure them with set screws pretty straight forward. Am I over thinking this or are there actual benefits. Please let me know what everyone thinks. Mike

[andrewb70]

Anyone see any advantages or disadvantages to securing brake rotors to hub/axles like most new vehicles? My 72 cutlass has c5 front and ls1 rear brakes. Would think drilling ,countersinking and tapping the rotors and hubs to secure them with set screws pretty straight forward. Am I over thinking this or are there actual benefits. Please let me know what everyone thinks. Mike

As long as the rotor is hub centric with the axle register, I see no reasons to use any hardware.

Andrew

[Schwartz Performance]

The only benefit I see is that it's a little easier to put the caliper on since you don't need to hold the rotor from moving.

-Dale

[TheJDMan]

The only reason the OEMs install them is to keep the rotors from falling off during the assembly process.

[Bob in St. Louis]

The only reason the OEMs install them is to keep the rotors from falling off during the assembly process.

This is true. ^^

Certainly NOT worth the effort of drilling and tapping yours. If your rotor falls off while you're driving, you've got bigger problems than not having brakes on that one corner.

[lt1cutlass]

The reason I'm asking is because there is space between my 7/16 studs and the OEM rotors. Also I had to index and shim my rotors for runout issues. My thinking was this way the rotors will stay in correct position and keep any movement out of the equation. I fully understand that wheel clamping torque secures everything together but I guess what I'm asking is would this cause any problems? (ie, warping, cracking) Thanks to all for responding. Mike

[Apogee]

The clearance between the stud and the rotor hole is irrelevant once you torque down the wheel. The only advantage to rotor retainer screws is with respect to assembly as stated before, however it certainly wouldn't hurt anything if you chose to add them.

Tobin
KORE3

[lt1cutlass]

Just what I was thinking. Thanks everybody!

[MonzaRacer]

Just one note to anyone running slide on rotors make an index mark on rotor,shims and one stud. I see so many techs pull cars apart and don't do this then wind up with a vibration or other rotor related issues.
Also a thin coat of silicone brake lube on hubs keeps them and rotos from rusting. Also any place a pad contacts metal a thin coat of brake lube all protect and ensure proper operation.
Had couple of techs tell me lube caused calipers to stick. Strange been doing theclubecthing with antiseize or silicone brake lube for 30 yes, still no issues. Had one tech tell me if he put thin coat on backs of pads it will melt and get on pads and make them squeak. Again, after decades of servicing cars I have never had any such issues.