IS-F Front Calipers
#122
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I thought our stock IS 500 pads were a ceramic pad.
#125
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And a wealth of info provided! But he asked what the OEM IS 500 pads were made out of to match them up to pads for the IS-F calipers. The OEM IS-F pad material might not be helpful in this case. I could be wrong though!
#126
#127
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Thanks
The way the brakes feel on my IS500, I'm betting they are ceramic too.. they don't seem to have the initial bite of a metallic or semi-metallic... my guess anyway...
#129
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geckornr (07-23-24)
#132
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I was going to wait to post my experimental results but I can give you some feed back on this.
I had these on the front for 3000 miles, they were great as I was still in the the honeymoon faze, but as I continued to test them (read, I beat the ***** out of the brakes) I found that it gets grabbier when it gets hot, to the point that a pedal pressure that was fine before now kicks in the ABS. If you push the brakes past this temp it falls off into full fade. Now nobody is going to do six 140mph to 30mph in a row to get to that point like I did so it should be fine for normal people
![Big Grin](https://www.clublexus.com/forums/images/smilies/biggrin.gif)
Pros:
- No dust per say. I can go two weeks and the front has as much dust as the stock rear. The dust is a light brown/tan and washes off easily.
- No noise
- No fade (reasonable)
- Grip from cold is good
- Grabbier went hot so it doesn't feel linear (Con for me)
- When hot, if you go from reverse to drive they make a loud clunk because they move in the caliper. I didnt hear any clunking at any other time.
I have tried other pads and will post my finding when I am over testing but these are in my good column.
Last edited by Srd555; 07-23-24 at 04:45 PM.
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HydrantHunter (07-23-24)
#133
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I was going to wait to post my experimental results but I can give you some feed back on this.
I had these on the front for 3000 miles, they were great as I was still in the the honeymoon faze, but as I continued to test them (read, I beat the ***** out of the brakes) I found that it gets grabbier when it gets hot, to the point that a pedal pressure that was fine before now kicks in the ABS. If you push the brakes past this temp it falls off into full fade. Now nobody is going to do six 140mph to 30mph in a row to get to that point like I did so it should be fine for normal people
. These are a FG rating
Pros:
I have tried other pads and will post my finding when I am over testing but these are in my good column.
I had these on the front for 3000 miles, they were great as I was still in the the honeymoon faze, but as I continued to test them (read, I beat the ***** out of the brakes) I found that it gets grabbier when it gets hot, to the point that a pedal pressure that was fine before now kicks in the ABS. If you push the brakes past this temp it falls off into full fade. Now nobody is going to do six 140mph to 30mph in a row to get to that point like I did so it should be fine for normal people
![Big Grin](https://www.clublexus.com/forums/images/smilies/biggrin.gif)
Pros:
- No dust per say. I can do two weeks and the front has as much dust as the stock rear. the dust is a ligh brown/tan and washes off easily.
- No noise
- No fade (reasonable)
- Grip from cold is good
- Grabbier went hot so it doesn't feel linear (Con for me)
- When hot, if you go from reverse to drive they make a loud clunk because they move in the caliper. I didnt hear any clunking at any other time.
I have tried other pads and will post my finding when I am over testing but these are in my good column.
I'm definitely not going to be doing 140mph runs. This further confirms these are a good choice (I'm sure there are better, but these sound pretty good and good value).
I look forward to reading about your future findings.
#134
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Well, the calipers made it to my house yesterday, and I put them on today. I bought a hand pump bleeder to keep from dealing with my wife
. I had a hard time getting the seal just right on the bleeder screw. I even use a smaller tubing than what the bleeder came with... So. there were always some air bubbles.... I think it is good though.
I did the bedding in procedure for the Z26 pads, and they don't quite have the initial bite just yet. I'm not sure if that is due to some air still in the lines and/or pads still bedding in. I'm sure the pads are still bedding in.... I just did the procedure and about a 10 mile cool down run.
I am going to get a buddy of mine to come over and do the old school way of bleeding to be 100% sure all the air is out of the lines. Will keep folks posted on my opinion once I know everything is 100% good.
Thanks
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
I did the bedding in procedure for the Z26 pads, and they don't quite have the initial bite just yet. I'm not sure if that is due to some air still in the lines and/or pads still bedding in. I'm sure the pads are still bedding in.... I just did the procedure and about a 10 mile cool down run.
I am going to get a buddy of mine to come over and do the old school way of bleeding to be 100% sure all the air is out of the lines. Will keep folks posted on my opinion once I know everything is 100% good.
Thanks
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SgtStonks (07-27-24)
#135
Lexus Champion
iTrader: (9)
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
When I bled the brakes on my ISF I used Earl's SoloBleeds with a friend in the car. The SoloBleeds made everything much easier![Thumb Up](https://www.clublexus.com/forums/images/smilies/thumbsup.gif)
https://www.earls.com.au/product-cat...s/solo-bleeds/
Lou
![Thumb Up](https://www.clublexus.com/forums/images/smilies/thumbsup.gif)
https://www.earls.com.au/product-cat...s/solo-bleeds/
Lou