How Much Do R32 Standard 280Mm X 30Mm Rotors Weigh?

[shamus11]

Hi Guys,

Easy one for someone to answer hopefully. Internet searches have not beeen fruitfull.

I'm looking to do either an SR20T 280mm * 22mm sliding caliper brake upgrade or R32 280mm * 30mm with 4pot calipers upgrade on an S13 knuckle.

Just want to compare the unsprung weights becuase I have both sets of calipers and SR20T rotors but it's going on a 1000kg car so either setup with good pads will be enough brakes.

I need to know how much the R32 30mm rotors weigh so I can compare the two setups.

Interestingly I weighed the single piston SR20T calipers at 5kg ea and the 4 pot R32 calipers at 3.5kg ea on bathroom scales with a min increment of 0.5kg so weights are a little rough.

Surprised me, if the R32 30mm rotors aren't ridiculously heavier than the SR20T rotors (which I fear they are) they might still be a viable option.

The SR20T rotors weigh 6.75kg ea.

Thanks in advance!!!

[PN-Mad]

7.7kg

[shamus11]

Thanks for the quick response!!! Amazing 11.2kg for R32 combination and 11.75kg for SR20T sliders.

Not much to consider there! 4 pots it is!

Haven't brought wheels yet, might be the other thing to consider. Want to run 15's.

[PN-Mad]

No worries.

Walked down stairs and weighed one. It's the only old rotors I have hanging round!