[WhoKnows]

Hello Again, I have been doing a bit of work to my Suzuki Sierra SJ70 1994 and I noticed the rotors are looking a little thin. I was just wondering has anyone tried a set of slotted and dimpled rotors? I saw a set here https://www.onlineautoparts.com.au/products/ZPN-02539 and I just wasn’t sure if they are worth it but considering they are only a $10 difference from standard thought it was worth the question to see what others think.

[saczel]

I have not tried them on a 4wd but on my old swift about the same as normal ones, makes more dust. They are supposed to stop the pads from glazing up when really hot but quality pads don’t have this problem anyway. Stock discs have more surface area so in theory should work better, pretty much a personal preference as much as driving style. Not too sure how it would work with some mud and gravel thrown in.

[llama_au]

I wouldn't, just a place for more grit to catch in the rotors.

[Joe]

I have them on a GV they are surpossed to stay cooler, they do produce more brake dust but other than that i have no complaints.

[Gwagensteve]

The purpose of slots on a rotor is to release gas that forms between the pad and rotor during high temperature braking. You won't find a motorsport application that doesn't run slots/dimples when using iron brakes. Whether a SJ70 ever gets it's brakes hot enough for this to be an issue might be open to debate.

It's possible that in an off-road application they will dry/expel mud better.

[fordem]

Gwagensteve wrote:

It's possible that in an off-road application they will dry/expel mud better.

I would bet on trapping it and wearing the pads faster...

[ZUZUKI]

Like Joe, I have them on an SQ625 GV & have had no issues with abnormal pad wear or trapping mud.
I only put them on when the original discs were due for replacement & thought might as well up grade.
Mine is a lardy bus when in packed up in touring mode, so any potential better braking ability is not a bad thing.
Mines a manual, I'm not hard on the brakes & can only remember one instance when the ABS was triggered on a tarmac road, so marginal as to whether it's worth it.
Rgs, Michael

[WhoKnows]

I ended up getting a set and threw them on. I will let you know what I think once I have had them on for a bit. I was going to post a picture but not sure how to XD.