Giro Disc Rotors
04-14-2009, 12:51 AM
#1
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Giro Disc Rotors
I have a GT3 customer who is looking to upgrade his brakes. 08 GT3, 90% track use, approx 5,000 miles. The OEM front rotors are toast, no big surprise. I did some research for him and came across the Giro Disc rotors. They look great in the pics, price is right, does anybody have any feedback or comments about the rotors when used on the track. I would like to set his car up with the Pagid RS 4-4 Orange pads, Giro Disc rotors, titanium heat shields, motul RBF 600 fluid. If anyone is using this setup or has any info/storys that would be great. Thanks in advance
Last edited by porsche52; 04-14-2009 at 01:16 AM.
04-14-2009, 01:06 AM
#2
Drifting
Hi there, if I may, I'd recommend going with the Pagid Yellow RS19 or RS29 setup, rather than the RS4-4 Orange. I've used both and find the Yellow has as much friction as the Orange, but is able to stop the car at much lower temps as well. Furthermore, I find the Yellows last longer. There is no downside as far as I can tell to using the Yellows.
In terms of the rotors, the Girodisc does look like a good buy. I recently put a set of DeMan rotors on the car and am very happy with the price point. It's too early to tell on durability, but they appear well built and designed. I had no fade issues on a very brake intensive track this past weekend.
Finally, in terms of the fluid, the Motul RBF600 is excellent. I've never been able to boil it, even when pushing very hard. Some folks prefer the Castrol SRF, but I've found no need to spend the extra dollars. I did 12 track days last year and didn't even bleed the fluid so I'm a big fan of Motul.
In terms of the rotors, the Girodisc does look like a good buy. I recently put a set of DeMan rotors on the car and am very happy with the price point. It's too early to tell on durability, but they appear well built and designed. I had no fade issues on a very brake intensive track this past weekend.
Finally, in terms of the fluid, the Motul RBF600 is excellent. I've never been able to boil it, even when pushing very hard. Some folks prefer the Castrol SRF, but I've found no need to spend the extra dollars. I did 12 track days last year and didn't even bleed the fluid so I'm a big fan of Motul.
04-14-2009, 04:57 PM
#3
Drifting
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The gyro disc are great rotors. They go well with the blacks. RSS has done extensive testing and the pad
operating temps match the rotor.
they are being used by some grand am teams this season.
operating temps match the rotor.
they are being used by some grand am teams this season.
04-14-2009, 11:45 PM
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Has anyone tried the Performance Friction two piece rotors? Another question, for 70% street, 30% track which pads would you go with the RS19 or RS29 Pagid? Or maybe some other pad?
04-15-2009, 11:24 AM
#6
Burning Brakes
I replaced my stock front rotors with PFC two-peice ones on my Cayman, and I can feel a definitive difference in braking performance, I am using Hawk HT-10s. They also saved about 3 lbs per front corner weight. Overall, I am totally satisfied even though they are not cheap.
The only downside is that the initial application of the brake when it is rainy isn't as crisp as the stock rotors, I suspect due to them being solid rotors rather than drilled; so you need to give yourself an extra 1-1.5 sec more time for braking under wet conditions.
The only downside is that the initial application of the brake when it is rainy isn't as crisp as the stock rotors, I suspect due to them being solid rotors rather than drilled; so you need to give yourself an extra 1-1.5 sec more time for braking under wet conditions.
04-15-2009, 01:20 PM
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I swear by the PFCs, per their website they last 8x as long as the brembos that last 3x as long as stock. I'm still on mine after 6 months. I got 3 track days out of the stock.
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04-16-2009, 11:52 AM
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04-16-2009, 01:07 PM
#10
Former Vendor
Girodisc information
Pagid Oranges are not made for the rear of a 997 GT3 and indeed would be a bit of a waste if they were. Yellows are where it's at as noted above -
The OEM discs are rather soft, and in my opinion it is a mistake for Porsche to continue offering holed rotors.
Virtually NO race teams uses holed rotors, as they simply crack and groove like crazy – indeed they 'crack out' and 'groove out' FAR before they wear out.
The Girodiscs are approx $300 for each replacement disc, so this setup simply makes even more sense.
And when the COMPLETE COST is LESS than $600 per corner.......'value city' on a great product.
*These discs are on their 3rd season of Grand Am competition so they are a proven commodity on the race track as well and is the ideal blend of decent price and top performance*
PORSCHE 997 GT3 ROTOR PACKAGES:
SIZE:
Front: Factory 350 mm/GiroDisc 350 mm
Rear: Factory 350 mm/GiroDisc 350 mm
WEIGHT:
Front: Factory 25.6 lbs./GiroDisc 22.4 lbs. slotted
Rear: Factory 22.1 lbs./GiroDisc 18.2 lbs. slotted
Shoot me a note for some special pricing on these setups - approx $1000 LESS than the PFC.
rennstore@comcast.net
The OEM discs are rather soft, and in my opinion it is a mistake for Porsche to continue offering holed rotors.
Virtually NO race teams uses holed rotors, as they simply crack and groove like crazy – indeed they 'crack out' and 'groove out' FAR before they wear out.
The Girodiscs are approx $300 for each replacement disc, so this setup simply makes even more sense.
And when the COMPLETE COST is LESS than $600 per corner.......'value city' on a great product.
*These discs are on their 3rd season of Grand Am competition so they are a proven commodity on the race track as well and is the ideal blend of decent price and top performance*
PORSCHE 997 GT3 ROTOR PACKAGES:
SIZE:
Front: Factory 350 mm/GiroDisc 350 mm
Rear: Factory 350 mm/GiroDisc 350 mm
WEIGHT:
Front: Factory 25.6 lbs./GiroDisc 22.4 lbs. slotted
Rear: Factory 22.1 lbs./GiroDisc 18.2 lbs. slotted
Shoot me a note for some special pricing on these setups - approx $1000 LESS than the PFC.
rennstore@comcast.net
04-17-2009, 02:02 PM
#11
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Thanks Craig for correcting me on the Pagid 4-4 rear brake pad issue!
My parts guy Mike just talked to you on the phone this morning. I plan on going with the Pagid RS 29's now. Hope to do some buisness with you in the future. Just waiting on the rotors to show up!! Customer wants car done by Monday 4-20-09, going to Miller the following weekend, not looking to good though.
04-17-2009, 06:17 PM
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Been using these on the PDK car for a while and it's great that they're also lighter too. A lot of the TT guys have been upgrading to these as well. For the price etc.. they're a great option:
http://www.sharkwerks.com/products.php?pid=194
http://www.sharkwerks.com/products.php?pid=194