C6 for a track car
So, I was thinking BMW 135i (over heating issues), BMW E46 M3 (minor various issues, among them value for car), very used 996 GT3 (prolly couldn't swing one in decent shape any time too soon) Nissan 370Z (over heating issues) and now after driving my dad's 08 C6 Z51 for the past weekend, I may be thinking Vette. While I have nothing but respect and admiration for the car however, I've just never thought of it as "Me." I've driven his car for a 45 minute session at The Glen last year, and it was just such a handful, and I found it very scary to push. I think a good statement would be "it's not an easy car to drive at the limit," which is the opposite of what you hear about an E46 M3 or even a Porsche GT3, to an extent. Which is perhaps why the only C6 Vette that's ever passed me is my dad at The Glen, and even that took him a couple years. Even in the advanced group last weekend, a gentleman in a 07 or so just couldn't keep up with me. Obviously quicker in the straights, but I walked him in the turns every time. Eventually I slowed up and gave him a point by in The Sole of the Boot, but he got sideways coming out of The Toe, got rattled, so I just took off, and never saw him again (sorry for my direct Watkins Glen references for those of you who don't know it).
So, who here has transitioned from something other than a Corvette, to a C6 at the track? How steep did you find the learning curve? I know the acceleration and braking are brutal, but to me it just felt like the back end wanted to come out around the turns. Felt quite unsettling to me. I guess once you figure it out then there's little that can beat a Vette on the track in its price range, if any. Just looking on eBay and the classifieds, it looks like I'll be able to find an 07ish Z51 with under 20,000 miles for around $25K by the end of next year.
Sorry if I rambled. Just looking for some insight. Oh, and any known major issues that pop up on the track? My dad has about 6 events on this car and about 6 events on his 06 C6, and never once experienced a hiccup (not that that's alot of events, but you get the point.) Thanks.
Edit: Couple of pics for fun.
Turn 9 at The Glen. Yes I know I should have 2 hands on the wheel but I couldn't resist.

Dad and I at Mont Tremblant (where he can't even come close to keeping up with me)

Letting him by at Monticello South
Last edited by StreetSpeed; Jul 26, 2009 at 05:11 PM.

If your only track experience is with low torque front drive cars on track the C6 will feel very different. You will need to adjust where and how you apply the power on apex and exit. Also, if the C6 is on OEM stock street tires they leave alot to be desired as far as communication and track performance, something like Toyo RA1 really wake up the car and communication especially if combined with wider wheels 18X10F and 18X11 rear I like ra1 in 275/35 front and 305.35 rear with CCW wheels in the sizes above. The C6 handling feel and chassis communication can be changed dramatically with minor alignment adjustments, a good alignment can literally make it feel like a different car. Without knowing more about your track experience in other cars namely rear drive high HP cars and without knowing how yours dads car is setup as far as alignment and tires, other mods. It is hard to say whether you are feeling a normal characteristic of the car, whether the driver needs to adjust his inputs, or whether your pops car is setup with an alignment that makes it feel nervous.
That said, I came from an S2000 and while the corvette does not seem to communicate as well as the S2000 at first, once I learned how to feel what the car was telling me ( it took some seat time) it became much easier to drive near and at the limit compared to the S2000 and its speed and capabilities are way beyond the Supercharged S2000 I had.
My final thoughts are the C6 is the best HPDE, daily driver combination available at any price. The stock brakes can be an issue for modified C6s with lots of HP and full slicks but most of that can be taken care of with full spindle ducts, Castrol SRF and proper race pads like PFC 01. If I were a serious tracker I would probably go ahead and invest in a big racing radiator with EOC, TOC from Dewitts or Ron Davis or LG motorsports just to be on the safe side and keep the car in reasonable tep range. (I live in Texas so that may not be an issue for you but just a thought)
IMO, if you cant drive a properly setup C6 on R comp tires faster than nearly everything else on the track, it is not the car that is the problem.
With the AH/TC on or even in comp mode you would almost have to try to drive it off the track to do so.
Last edited by C6400hp; Jul 26, 2009 at 09:52 AM.
My dad's does have R888's on it, as well as Hawk HT-10 (I think) pads. Other than that, it's the stock Z51, so I'm not sure what you've changed on yours from stock. Maybe we'll see if we can find someone in the instructor group sometime with a not-stock suspension setup and have em' swap cars and feel the difference. And you're right, I have zero experience in high hp rear wheel drive cars, except I've been dabbling in my dad's Corvettes since I was 18 (or, for 9 years now). On the street, at 6 or 7 tenths, the thing is a dream. On the track, it gets scary. I think if I actually got one I might head out to the Bondurant school or something, so I can beat the **** out of one of theirs with less consequence, and really feel the limits of the car.
Last edited by StreetSpeed; Jul 26, 2009 at 10:21 AM.

My dad's does have R888's on it, as well as Hawk HT-10 (I think) pads. Other than that, it's the stock Z51, so I'm not sure what you've changed on yours from stock. Maybe we'll see if we can find someone in the instructor group sometime with a not-stock suspension setup and have em' swap cars and feel the difference. And you're right, I have zero experience in high hp rear wheel drive cars, except I've been dabbling in my dad's Corvettes since I was 18 (or, for 9 years now). On the street, at 6 or 7 tenths, the thing is a dream. On the track, it gets scary. I think if I actually got one I might head out to the Bondurant school or something, so I can beat the **** out of one of theirs with less consequence, and really feel the limits of the car.
Just to be clear I was not trying to give you a hard time about your driving ability or current car. Sorry if it came across that way just trying to be honest. Sounds like your dad has a good start on what the C6 needs to be extremely fast on track. Again, the key to adjusting the C6 to the driver is the alignment, it literally makes a huge difference in behavior with just minor changes. If the car feels loose on exit some toe in on the back will make a huge difference. If you do not have enough steering feel and the car does not turn in as rapidly as you like a little toe out(very little 1/16" total) will change that and more caster will give you better "on center" feel. See if you dad knows what his alignment is set at and what sizes R888 he is running. I am not suggesting the C6 needs any suspension changes from stock. I do however like the bilstein sport shock better than OEM Z51 and they were fairly cheap at $300/set. The car is much more capable than most drivers in totally stock form. As far as my car, I've done gone mod crazy, you can click on my garage in my avatar to see what I have done. None of it was necessary, just fun! Of course you know that with the mods to your GTI.
What exactly were you feeling that you did not like or made you nervous in the car at what point? turn in, apex, exit? Like I said the C6 can take some seat time to "feel" what the chassis is tellling you as it communicates slightly differently that anything else I've driven fast.
For you, with lots of experience in front drive, it will be a whole new experience. you will need to adjust your line, and adjust all of your steering, throttle and braking inputs. Once you learn what the car likes, you can become very fast very quickly. Bonus, you have easy access to a car you can use on track to get familiar with it, build speed slowly and it will come. Again, IMO there is not a better combo HPDE/Daily driver out there. I can drive to the track on my RA1, extremely comfortably with the stereo rocking and AC blasting with my 12X12 popup tent, a cooler, carry on suitcase, all my race gear,2 helmets, suit, 2 fold up chairs, etc in the back getting 30 mpg on the hwy and give any car on the track a good run all day long. Then cruise home in total comfort. Parts for the Corvette are "relatively" cheap as well.
I cannot say what it is that didn't feel "right" about his car around the track. Of course, he said the same thing about mine, so it's just more than likely not being used to it. But, I have been a passenger in many a RWD car, and while it's obviously not the same as driving it, you can feel some differences. My last 2 experiences were in a GT3 and an RX-8. Both of those cars (expert driven) felt completely composed at all times. When the line WAS crossed, just a hint of the back end coming around, but you can get it back in shape (like with my car). It doesn't just snap. In my younger days I had my dad's C5 "snap" on me many a time on the street, to the point where I finally said "I'm stupid, I should stop doing this." However, as underpowered as the RX-8 is, both the GT3 and RX-8 are extremely poised, exemplary handling cars, so maybe that alone makes the difference in "feel." I don't know. We're headed back to The Glen in August, so perhaps I'll take his car out in the red group for a shorter session.
Edit: Off topicish, do you carry HPDE insurance by any chance? I don't on my GTI cuz it's cheap and easy, but if I had a new(ish) expensive(ish) car that can bite you in the *** pretty quick, then I might consider springing for it until I figured out the car pretty well.
Last edited by StreetSpeed; Jul 26, 2009 at 11:23 AM.

I like my alignment in the -1.2 to -1.5 camber with 1/32"(my preference) to 1/16"( my recommended maximum) total toe out and as much caster as you can get with those settings. appx. 7.75+ front. In the back anywhere from -.85 to -1.25 camber and anywhere from 1/8" to 1/4" toe in. This is what I use for a car that is mostly driven on the street. You can get much more aggressive with the camber on a car that spends most time on track and is on full slicks. Having toe in on the back really helps the car stay composed on corner exit. If you are using stock runflat tires, those camber settings will probably cause some minimal inside shoulder wear. The front toe out will likely cause more inside wear than the camber but it is not too bad with softer sidewall non runflat tires. Alot of guys run o toe in front and like it just fine but for me I really prefer the turn in response of just a hair of toe out. Biggest thing is make sure the car has some rear toe in and to "squeeze" the throttle on from apex to exit.The C6 is very controllable once you "know it". I might suggest an autox or two in your dads car to really be able to slide it around without worry of hitting anything. Once you find what it feels like at the limit and get used to that you can drive a c6 sideways like a drift car and be in complete control, it really responds just how it should.
Last edited by C6400hp; Jul 26, 2009 at 11:45 AM.
http://forums.corvetteforum.com/memb...comsrazor.html
He has done a lot to his car to make it race ready and I'm sure could point you in the right direction. Nice photos btw, and yes you can imbed YT clips here http://forums.corvetteforum.com/help...be-videos.html
..
The Best of Corvette for Corvette Enthusiasts


I came to the Corvette from two Subaru STIs, both of which were very modified and very fast. They were incredibly easy to drive at the limit, and it took me quite some time to get used to driving the 'Vette at the limit; it felt unpredictable a first, because it didn't feel anything like what an all wheel drive car feels like when it is about to let go. It is really not any harder, it is just completely different; expecting to be a great V8 RWD driver just because you can drive a 4 cylinder front wheel drive car very well is like expecting to be able to race a motorcycle just because you can ride a bicicle... Completely different driving dynamics, very different behavior at the limit, and very different driving techniques required.
As far as 'Vettes keeping up on corners... Are you running race tires? Stock C6s come with run flat tires that are about as sticky as a good all season; they do pretty well for any kind of street usage, but comparing them to a car running a set of actual race tires is not a very fair comparison. When I swapped out my factory tires for a set of Toyo Proxes R888, my car managed 1.24Gs at autocrosses before they finally let go; the difference is enormous; I don't think you could put enough power into a car running run flats to make up for how much slower it would be than the same car on race tires around a race course.
It took time before I became comfortable racing my 'Vette, but now, you couldn't pay me to go back... It is SO MUCH more capable; you have more rubber on the road, with a wider wheel base, in a lighter car, with a better weight balance, and it uses the front wheels for one thing and one thing only; directing the car

My 2 cents worth

My 'Vette on 305/35R18R, 265/35R18F R-Comps:
My 1st Subaru smoking all 4 tires around a corner. It had about 400HP and weighted 2740lbs:

My 1st and my 2nd Subaru.
You just summed why I don't want an AWD car either. Every one assumes my next move would be an Evo, or STI, or S4, but in my experience an AWD car handles much like a FWD with more grip. Not saying AWD can't be blazingly fast and fun and rewarding to drive, but it's just not the direction I wanna head at this time.
I don't run "race tires" per se, but Falken Azenis RT-615s. Not run flats, but not exactly Hoosiers either. As I said, I'll take the old man's C6 out for a session or two in August, and see if I can't get an instructor in the car who really knows how to handle a RWD beast.
Edit: By the way, do you only do Auto-X or do you road race as well? As you noted, the two require and entail "Completely different driving dynamics, very different behavior at the limit, and very different driving techniques required."
Last edited by StreetSpeed; Jul 26, 2009 at 08:40 PM.

I came to the Corvette from two Subaru STIs, both of which were very modified and very fast. They were incredibly easy to drive at the limit, and it took me quite some time to get used to driving the 'Vette at the limit; it felt unpredictable a first, because it didn't feel anything like what an all wheel drive car feels like when it is about to let go. It is really not any harder, it is just completely different; expecting to be a great V8 RWD driver just because you can drive a 4 cylinder front wheel drive car very well is like expecting to be able to race a motorcycle just because you can ride a bicicle... Completely different driving dynamics, very different behavior at the limit, and very different driving techniques required.
As far as 'Vettes keeping up on corners... Are you running race tires? Stock C6s come with run flat tires that are about as sticky as a good all season; they do pretty well for any kind of street usage, but comparing them to a car running a set of actual race tires is not a very fair comparison. When I swapped out my factory tires for a set of Toyo Proxes R888, my car managed 1.24Gs at autocrosses before they finally let go; the difference is enormous; I don't think you could put enough power into a car running run flats to make up for how much slower it would be than the same car on race tires around a race course.
It took time before I became comfortable racing my 'Vette, but now, you couldn't pay me to go back... It is SO MUCH more capable; you have more rubber on the road, with a wider wheel base, in a lighter car, with a better weight balance, and it uses the front wheels for one thing and one thing only; directing the car

My 2 cents worth

My 'Vette on 305/35R18R, 265/35R18F R-Comps:
My 1st Subaru smoking all 4 tires around a corner. It had about 400HP and weighted 2740lbs:

My 1st and my 2nd Subaru.

At that time there were several other manufacturers with their fast cars, like the Ford Focus RS, Golf R32, 360 Cup Ferrari's and loads of Porsche's. The Z51 C6 even on standard runflats was a very capable car, way faster than the standard Focus RS and R32, it was running along nicely with the Porsche GT2 and the Cup Ferrari's. I thought is was great that a car that costs way less then the other two could keep up with them.
I found the car does not oversteer but actually understeers a lot. Push the car hard into a turn and the front wheels will push. Try to add more steering will just get you in trouble especially if you don't manage the go pedal well. I never felt as if the rear was coming around but them again I am use to the power of my c5 (560 rwhp) so I am use to not mashing the gas pedal.
After a few laps I found myself having to trail brake the c6 longer into the turns and even though it felt like an eternity before hitting the gas and even though it felt like I was going slower my lap times were quicker.
To the op when are you at WGI in August. I will be there the 17-18th.
Last edited by Wicked Weasel; Jul 27, 2009 at 08:59 AM.
I was behind a mustang and that guy had to work every turn while I was sitting back relaxing. Sure I was faster but there is something fun about taking a car at lower speeds and tossing it around like a rag doll.
Of course there is also something exciting about hitting 160s on the back and seeing those brake markers approaching quickly and knowing the chicane is right there to bite you (which it has).
Just something to think about.
I was behind a mustang and that guy had to work every turn while I was sitting back relaxing. Sure I was faster but there is something fun about taking a car at lower speeds and tossing it around like a rag doll.
Of course there is also something exciting about hitting 160s on the back and seeing those brake markers approaching quickly and knowing the chicane is right there to bite you (which it has).
Just something to think about.

Randy
the gti was a lot easier to drive compared to the vette because of the fwd "you can nail it in the corners without the rear stepping out" I feel that the gti is an awesome beginner track day car and it takes awhile to get use to 400hp rwd power of the vette.
p.s. It's a vette c'mon!
Last edited by muskaroxs; Jul 27, 2009 at 10:02 PM.













