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Old 02-25-2008, 03:58 PM   #1
BlackoutWRX
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Default Not an exact science, I know. How much wear to expect.

Like the title states i know there is no exact answer, but I'm just trying to get an idea. I'm interested in trying out HDPE for the first time in late March. NASA has a series called Hyperdrive that includes just one 20-30 minute session with an instructor (as opposed the the usual HPDE which includes many more runs) at Virginia International Raceway. I have helix coilovers and brand new Nitto Neogen's on the car right now with decent brake pads, and I'm just wondering how much wear to expect in one 20-30 minute run. Would this be a situation where i'd be taking 5000-10000 off the life of my tires and other wear items, or is the wear rate not that high?
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Old 02-25-2008, 05:10 PM   #2
Crash477
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What kind of brake pads do you have?
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Old 02-25-2008, 06:32 PM   #3
BlackoutWRX
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by "decent" i meant in good condition. haha. They are OEM.
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Old 02-25-2008, 06:53 PM   #4
Crash477
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Your stock pads wont last 10 minutes on track lol. Ok thats a little exagerated, but seriously, get some different pads, at the very least some HAWK HPS or Carbotech Bobcats. Those will do ok for 20 minutes, but if you want more get teh HAWK HP Plus, or Panther Plus brake pads.

I tracked a 2002 WRX a few times, and the brakes are the crap on the car on track, especially if you havent done stainless lines, or changed the fluid, or upgraded the pads. I would NOT recommend tracking the wrx with stock pads, even if only for 20 minutes.
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Old 02-25-2008, 10:21 PM   #5
triguy
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You won't have much fun unless you invest in a set of dedicated track pads for the front such as the Carbotech panther XP series. Otherwise you'll have to dial back your speed to avoid serious brake fade. You can get by with a set of better than OEM but streetable pads in the rear such as Carbotech Bobcats or Axxis Ultimates. The stock calipers actually perform pretty well on the track with a set of track pads and stainless steel brake lines.
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Old 02-26-2008, 01:28 AM   #6
growling_boxer
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I've heard good things about Ferodo DS2500 pads for being very streetable while still performing well in track sessions. i have not personally used them yet, but was planning on getting a set this summer. is there a reason you guys didn't mention them as a good choice? I really want something better for my STi than the Hawk HPS I have on my Legacy, and I've heard the HP+ is not as good on the street since they need to be warmed up.
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Old 02-26-2008, 01:53 AM   #7
chimchimm5
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Quote:
Originally Posted by BlackoutWRX View Post
Like the title states i know there is no exact answer, but I'm just trying to get an idea. I'm interested in trying out HDPE for the first time in late March. NASA has a series called Hyperdrive that includes just one 20-30 minute session with an instructor (as opposed the the usual HPDE which includes many more runs) at Virginia International Raceway. I have helix coilovers and brand new Nitto Neogen's on the car right now with decent brake pads, and I'm just wondering how much wear to expect in one 20-30 minute run. Would this be a situation where i'd be taking 5000-10000 off the life of my tires and other wear items, or is the wear rate not that high?
Since this is your first time, you can probably go all stock... *IF* you don't push hard (which you shouldn't). My first time out, I was all stock and the stock bakes lasted me just fine... because at the end of the long straights I let off the gas very early so I could conservatively judge the corner entry speed. But the second track day, however, I had boiled the fluid and (I think) started to fade the pads.

As for tires, get an alignment for sure. You need max even negative camber in the front that the stock stuff will give you. I could only get -0.9 on each side and that's not enough. You will wear out the outer edge of the contact patch much quicker than the rest. Just so you know, I had to junk the first set of tires I autox/track'd with because I ran them several times on the stock alignment. The unevenness meant I got to 0% tread left on the outer edge while there was still 30% left on the rest. This was all due to alignment.

Other thing, is pump up your tires. Start with 38 psi. Check them after each session so you don't go too high. So far, (on my Goodyear f1gsd3's) a *hot* psi of 41-42 seems to be good for helping to stiffen up the wall so it doesn't rollover so much.

Your guess of "1000-5000 miles" for a first timer is probably correct... but if you don't have an alignment, count on 5k-15k off just the outer edge.
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Old 02-26-2008, 02:31 AM   #8
Crash477
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Quote:
Originally Posted by growling_boxer View Post
I've heard good things about Ferodo DS2500 pads for being very streetable while still performing well in track sessions. i have not personally used them yet, but was planning on getting a set this summer. is there a reason you guys didn't mention them as a good choice? I really want something better for my STi than the Hawk HPS I have on my Legacy, and I've heard the HP+ is not as good on the street since they need to be warmed up.
The Hawk HP Plus are fine on the street. I live in a climate where it gets 30, sometimes in the high teens, temperature wise, and they do just fine.

They will last a weekend at the track on the STi, but thats about it. My next set is going to the PFC01
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Old 02-26-2008, 08:41 AM   #9
mav1c
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Honestly, for just one Hyperdrive session you should be OK with the stock equipment, and won't see much wear at all. This will be your first time on track, with a bunch of other first timers, so the speeds will be down, and you're not going to be pushing hard. I know. I've instructed them several times. Don't get me wrong, it's definitely a fun time, but you spend most of it just learning the track, and dealing with traffic. Just make sure you have some fresh brake fluid, tires are in good condition, and come with an attitude to learn. If you can manage to get some better brake pads and fluid, that's definitely a good thing, especially if you think you'll be doing it more in the future.

Last edited by mav1c; 02-26-2008 at 08:50 AM.
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Old 02-26-2008, 12:45 PM   #10
leecea
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Quote:
Originally Posted by chimchimm5 View Post
The unevenness meant I got to 0% tread left on the outer edge while there was still 30% left on the rest. This was all due to alignment.
I have maxed out my stock camber and still get significant outside edge wear during autox, so I assume it will be the same at the track unless you go beyond what stock bolts provide. Of course you can flip most tires to offset that a bit.
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