NYBRD
Full Access Member
- Joined
- Jul 29, 2024
- Posts
- 141
- Reaction score
- 214
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Thanks, getting close hopefully to installing these on mine. Have everything except the washers which I just ordered.Wanted to provide some updates and observations.
1. The big 6 piston calipers are EXTREMELY sensitive to not being centered. You can eyeball it, sure. But if it's off by even .5mm (which is actually a lot), it will cause major issues.
I was having major issues with grinding on full lock turns, and what I felt like were the pads dragging. As a matter of fact, I know they were dragging; Acceleration was sluggish, coasting wasn't what it really used to be as it was with stock. I put up with it and dealt with it because I thought I couldn't find the right washers. The ones I was using were cheap Chinese trash from Amazon, and they were 2.5mm. Or were supposed to be. I ultimately don't think they could stand up to the torque required when tightening down the mounting bolts for the front calipers, so it got even smaller when I tightened the caliper bolts. The last time I was dealing with switching pads, the grinding became so severe I thought I busted the hub bearing or something else. Nope, it was the pads dragging.
I could tell when eyeballing it that I needed 3mm. Lo and behold, I found them! I can't find any other place that sells these. Sure, you can double up other washers, but like I said before, the quality will be questionable at best. Here is what I ended up installing:
ARP Racing 200-8535 ARP 2008535 10-Pack Of Special Purpose Washers, 9/16" Inside Diameter, 1" Outside Diameter, .120" Thick
Amazon.com: ARP 200-8535 ARP 2008535 10-Pack Of Special Purpose Washers, 9/16" Inside Diameter, 1" Outside Diameter, .120" Thick : Industrial & Scientific
Buy ARP 200-8535 ARP 2008535 10-Pack Of Special Purpose Washers, 9/16" Inside Diameter, 1" Outside Diameter, .120" Thick: Flat Washers - Amazon.com ✓ FREE DELIVERY possible on eligible purchaseswww.amazon.com
.120" is 3mm. I just installed them last night. Even though the caliper is still ever so slightly off center now, they made a massive improvement. No more rubbing/grinding on turns. Coasting is back to stock feel. Acceleration is way better than before. I highly recommend this to those who think they are having rubbing/grinding issues up front.
2. Ceramics like Powerstops are great, because they are quiet, but I was still dealing with the random squeal when cold. I really hated it. Semi-metallic pads fixed that. There is a tradeoff because you will have to deal with cold creep groan, which is kinda normal with semi-metallics, but once you bed them in properly, they will be drastically minimized. I can accept that over squeal any day. To follow that up:
3. Good quality semi-metallic pads make a huge difference in braking feel. They grab way better and give you higher stopping performance than ceramics, and if you thought you stopped better with these big brakes, the semi-metallic pads push it over the edge. I'm telling you that you have to feel it to believe it. I tried 4 completely difference pads for the 6 piston brakes up front and about 7 different pads in the rear. I can unequivocally tell you that semi-metallic is what you should be running if you want the best performance and minimum noise. I used these pads:
Front: MEVOTECH TXBPP2407
Rear: Hawk Performance HB727B.592 HPS 5.0 Street Brake Pads
Amazon.com: Hawk Performance HB727B.592 HPS 5.0 Street Brake Pads : Automotive
Buy Hawk Performance HB727B.592 HPS 5.0 Street Brake Pads: Brake Pads - Amazon.com ✓ FREE DELIVERY possible on eligible purchaseswww.amazon.com
Of course, I wanted to match the front and rear pads with the same manufacturer and product line. I was not able to do that. I cannot find quality (let me reiterate that word QUALITY) pads that are from the same manufacturer and product line that match. The closest I had are the Powerstops (Z37 up front and Z26 in the rear). I tried to use the best quality semi-metallics I could find. I tried DFC, they are complete garbage. I used Powerstop, and they are ok, but they have terrible bite when cold. I finally settled on Mevotech because I never used it before and they promised good performance, so why not take a shot.
The performance of the Mevotechs are pretty damn good when paired with the Hawks! That's the combo I'm running now and will try for a week and report back.
Hope this helps anyone who might be having some difficulties with the big brakes. They are finicky and need to be dialed in for the best performance.
Are your rims GM OEM or are they replica? Do you have the GM part number if original? 24 offset really should have fit, although I do understand that it's really up to the spoke design. Heck, if you look at my rims, you could swear they will not fit, but they do, and still have tons of clearance.View attachment 468575
22x9 24offset , fronts did not clear the 6piston brembo FML , need atleast .75 inch spacer and extended wheel studs now F..M..L lol had to put my original caliper back on
They are oem. Really a bummer now I have to find the correct extended wheel studs,remove the wheel hubs , find a custom.75 hubcentric spacer . Pain in my @$$ lol and then hope I have the right measurements that my oem lug nuts will fit just rightAre your rims GM OEM or are they replica? Do you have the GM part number if original? 24 offset really should have fit, although I do understand that it's really up to the spoke design. Heck, if you look at my rims, you could swear they will not fit, but they do, and still have tons of clearance.
I like those wheels - looking at getting a set that I'm eyeballing on Marketplace, locally.They are oem. Really a bummer now I have to find the correct extended wheel studs,remove the wheel hubs , find a custom.75 hubcentric spacer . Pain in my @$$ lol and then hope I have the right measurements that my oem lug nuts will fit just right
Rear was very simple install with those wheels. The fronts on the other hand with a .75 spacer should have the tire flush with fender il find out as soon as I have them on il report back. I have seen these oem wheels sold as replicas for a pretty good price brand new. Could always do replicas if its easier on the pockets.I like those wheels - looking at getting a set that I'm eyeballing on Marketplace, locally.
So, the brakes fit under the rears, but not the fronts? At 3/4" spacer, plus longer wheel studs and the rest, are you anticipating Mеxipoke, or just a slightly more aggressive stance?