CRex

Due to unforeseen supply issues I'm forced to run my TT this weekend with Pagid RS29's in the front and RS14's in the back. I'm familiar with both compounds individually but have never had to mix them on different axles. This is my street 997 GT3 with ABS, so I can't change the brake bias to compensate. Has anybody else tried a similar setup on a 997? I'm slightly apprehensive and would appreciate sage pointers...

Frank 993 C4S

I would be quite a bit apprehensive about making a sort of unproven random change like that. By using different compounds front/back you are essential changing the brake bias and your ABS might freak out.

Krokodil

It will work fine and probably actually improve brake feel by moving the initial bias to the rear a bit. The ABS will automatically adjust the bias at the limit so you should have no worries.

We used to run this combinaiton on the Cayman all the time when using the stock ABS.

Please report back on how it felt.

Cheers,

multi21

I've run that exact combination in the past on my 996 GT3 to get more bias in the rear. Never a problem with ABS and might help a little due to the meaty tires in the rear to help with braking

CRex

Guys many thanks for the assurance. I knew folks are happy with that setup on 6's (which seems to have a massive 61/39 front bias from factory). Real appreciate the pointers!

Then in the middle of the night I found Pagid's technical data:



Which works out to 1-2.5% of bias reduction in the front. Was fearing far worse than that... even went as far as running my simulator at 50/50 and hated how it braked. Storm in a teacup...

Thanks all--will report on feel after the TT

Crazy Canuck

+1

jrgordonsenior

Bet you can't tell the difference...

CosmosMpower

Is it common to run a more aggressive track pad on the rear? I have Hawk DTC 60's all around, going to test some 70's in the rear.

Jason @ Paragon Products

We sell that combination quite a bit to both amateur and pro race teams.

mark kibort

ABS is not going to freak out... normal conditions with the same pads can make much more of a difference...... MUCH more than this subtle change

911s can use more rear bias anyway, based on the weight distribution as compared to most cars.... this small change wont be noticed.

CRex

Thanks all. It's been a while since the original post. I recall the car was noticeably more jittery at corner entry. Not the bad kind of jitter, but enough to let you know that the rear's in play. Not unlike a playful 996 GT3.

I was also running A6 front and R6 back, which exacerbated the situation out back.

I wouldn't recommend this to the uninitiated though. But it's one way to make a street car more "raw".

p.s. in the end I was a whole second slower than my PB--a huge letdown as I had high hopes for the event. In fairness there were other factors in play, but I'm back to running identical pads.

CosmosMpower

Guessing the main contributor was the tires not the brake pads. The difference between A6 and R6 is pretty large. I'll be testing Hawk DTC 60 fronts and DTC 70 rears soon.

mark kibort

yep, I would guess that to be true as well. That's a noticeable difference. pads, no way you can tell over a broad range, the difference, especially in the rear.

mdrums

I've been running the Pagids yellow black combo for years. On Carrera based cars this works great on the track. I've ventured off and tried various PFC pads like PFC 01 and 08 and keep going back to the Pagids combo which gives me better brake modulation feel and a little less rotor wear.

CosmosMpower

I think I'm going to try a more aggressive rear pad. Ran Hawk DTC60's on both ends on my .1 GT3 on RE-11's this weekend and it felt like there was too much bias towards the front. Going to test DTC70's in the rear.