C8 track alignment vs street
Thread Starter
Intermediate
Joined: Jan 2018
Posts: 32
Likes: 13
C8 track alignment vs street
Just became a member at Spring Mountain and I want to take the C8 out pretty often. My issue is street vs track alignment. Are people actually switching back and forth? I anticipate going at LEAST once a month. Has anyone had any success with a middle of the road alignment? If I set the track alignment then put the camber washers back in after track use to reduce negative camber, will this mess up the toe?
Racer
Joined: Aug 2019
Posts: 299
Likes: 161
From: Texas
Just became a member at Spring Mountain and I want to take the C8 out pretty often. My issue is street vs track alignment. Are people actually switching back and forth? I anticipate going at LEAST once a month. Has anyone had any success with a middle of the road alignment? If I set the track alignment then put the camber washers back in after track use to reduce negative camber, will this mess up the toe?
What’s Next
Joined: Dec 2020
Posts: 1,293
Likes: 834
From: Reality
Definitely a personal preference. I’ll be leaving mine at track setting for I always have. Especially tracking once a month. I pawn it off as regular maintenance and wear and tear. If I get 7-10K miles a set I’m happy. Part of the hobby. Pick your poison. I’m sure middle of the road will help a good bit but it depends on how hard you drive and your limits. I want the most out of my cars and have them set at the best results and drive to those limits. If you adjust any parameters of the suspension the toe will change. Doesn’t take much toe out to wear very quickly.
Track Rat
Joined: Oct 2006
Posts: 6,466
Likes: 3,464
Will you be tracking on the same tires or do you have a dedicated set of track tires? If it is the same tires then I wouldn't worry about it as you'll wear them out on track long before any effect of street miles. If you add the washers back in the toe will change and too much toe is a bigger killer of tires than camber.
I tried the GM track alignment and found the car to be too loose with it. I ended up going with a mid-way alignment that is closer to what I run on my C7 (-2.5/-2.1 camber) and I also lowered the rear two turns. These changes along with the Goodyear 3R tires were on huge improvement. I "daily" drive my C8, which isn't really daily any more but it is my main road car, and I've not seen any adverse wear from road use including a couple long road trips.
Here is some on track video of the car after the changes.
I tried the GM track alignment and found the car to be too loose with it. I ended up going with a mid-way alignment that is closer to what I run on my C7 (-2.5/-2.1 camber) and I also lowered the rear two turns. These changes along with the Goodyear 3R tires were on huge improvement. I "daily" drive my C8, which isn't really daily any more but it is my main road car, and I've not seen any adverse wear from road use including a couple long road trips.
Here is some on track video of the car after the changes.
Last edited by Poor-sha; Jan 31, 2021 at 12:08 PM.
Thread Starter
Intermediate
Joined: Jan 2018
Posts: 32
Likes: 13
Good call, kind of forgot that I am running separate track wheels, don't know how it slipped my mind. I saw your posts in a few threads in my research so far. Running 21/20 on the street. Having some wheels made right now to accept stock size tires for the track. The track tires will get 750 miles put on them per track day so maybe a balance there.
The street tires are then the ones I'm scared for, as they will see only street use, so no track use to balance the inside edge wear on the street?? What kind of toe are you running on your setup?
The street tires are then the ones I'm scared for, as they will see only street use, so no track use to balance the inside edge wear on the street?? What kind of toe are you running on your setup?
Track Rat
Joined: Oct 2006
Posts: 6,466
Likes: 3,464
Originally Posted by dtnorthern
Good call, kind of forgot that I am running separate track wheels, don't know how it slipped my mind. I saw your posts in a few threads in my research so far. Running 21/20 on the street. Having some wheels made right now to accept stock size tires for the track. The track tires will get 750 miles put on them per track day so maybe a balance there.
The street tires are then the ones I'm scared for, as they will see only street use, so no track use to balance the inside edge wear on the street?? What kind of toe are you running on your setup?
The street tires are then the ones I'm scared for, as they will see only street use, so no track use to balance the inside edge wear on the street?? What kind of toe are you running on your setup?
Realistically how many street miles do you plan to put on the car in year?
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Burning Brakes
Joined: Jan 2014
Posts: 1,078
Likes: 262
From: swoyersville pa
Will you be tracking on the same tires or do you have a dedicated set of track tires? If it is the same tires then I wouldn't worry about it as you'll wear them out on track long before any effect of street miles. If you add the washers back in the toe will change and too much toe is a bigger killer of tires than camber.
I tried the GM track alignment and found the car to be too loose with it. I ended up going with a mid-way alignment that is closer to what I run on my C7 (-2.5/-2.1 camber) and I also lowered the rear two turns. These changes along with the Goodyear 3R tires were on huge improvement. I "daily" drive my C8, which isn't really daily any more but it is my main road car, and I've not seen any adverse wear from road use including a couple long road trips.
Here is some on track video of the car after the changes.
2:02.88 Lap of VIR Full in a C8 Corvette - YouTube
I tried the GM track alignment and found the car to be too loose with it. I ended up going with a mid-way alignment that is closer to what I run on my C7 (-2.5/-2.1 camber) and I also lowered the rear two turns. These changes along with the Goodyear 3R tires were on huge improvement. I "daily" drive my C8, which isn't really daily any more but it is my main road car, and I've not seen any adverse wear from road use including a couple long road trips.
Here is some on track video of the car after the changes.
2:02.88 Lap of VIR Full in a C8 Corvette - YouTube
I’m going to give these a try for track sprint this year , I bumped up the size in front a little.
Racer
Joined: Jan 2012
Posts: 468
Likes: 67
From: El Dorado Hills, CA
What diameter 305 are you running in the rear, 27.2” or 28.5”? The photo wasn’t sharp enough to detect. The 265 front is 26.4”, making the differential front to rear 0.8” if you running the 27.2” rear diameter, and 2.1” running the 28.5” rear. They differ from the stock differential, of 1.4”, by - 0.6” (27.2”) and + 0.7” (28.5”).
I’m concerned with running a differential of more than 0.4” from the stock 1.4”, due to the electronics, including ABS, Mag Ride, and other dynamics lurking out there. The +/- 0.4” was arrived at from people running C6 and C7’s. I haven’t read anything relating to the C8. What are your thoughts, or what did your research find?
Do you have prior experience with the Supercar 3’s?
Thanks much!
I’m concerned with running a differential of more than 0.4” from the stock 1.4”, due to the electronics, including ABS, Mag Ride, and other dynamics lurking out there. The +/- 0.4” was arrived at from people running C6 and C7’s. I haven’t read anything relating to the C8. What are your thoughts, or what did your research find?
Do you have prior experience with the Supercar 3’s?
Thanks much!
Burning Brakes
Joined: Jan 2014
Posts: 1,078
Likes: 262
From: swoyersville pa
What diameter 305 are you running in the rear, 27.2” or 28.5”? The photo wasn’t sharp enough to detect. The 265 front is 26.4”, making the differential front to rear 0.8” if you running the 27.2” rear diameter, and 2.1” running the 28.5” rear. They differ from the stock differential, of 1.4”, by - 0.6” (27.2”) and + 0.7” (28.5”).
I’m concerned with running a differential of more than 0.4” from the stock 1.4”, due to the electronics, including ABS, Mag Ride, and other dynamics lurking out there. The +/- 0.4” was arrived at from people running C6 and C7’s. I haven’t read anything relating to the C8. What are your thoughts, or what did your research find?
Do you have prior experience with the Supercar 3’s?
Thanks much!
I’m concerned with running a differential of more than 0.4” from the stock 1.4”, due to the electronics, including ABS, Mag Ride, and other dynamics lurking out there. The +/- 0.4” was arrived at from people running C6 and C7’s. I haven’t read anything relating to the C8. What are your thoughts, or what did your research find?
Do you have prior experience with the Supercar 3’s?
Thanks much!
Here you go ( the 305/35/20 is too tall you are correct) I’m running 265/35/19 and 305/30/20 and the only experience I have is knowing they can handle more heat than other 200- 240 TW racing tires . The c8 throws tons of heat on front tires. My R71R’s never got faster as the day went on . Are supercar 3’s good cold ? No !!!! I plan on keeping them warm by running my car between runs ( with A/C on ) I found the c8 loves being run between runs even with a-c on .
Racer
Joined: Jan 2012
Posts: 468
Likes: 67
From: El Dorado Hills, CA
I’m assuming you run the stock wheels, or at least the stock width rims. Any concerns with using the 8.5” rims for the 265’s?
Well, if the Supercars like heat, they’ll get it where I AX. The average AX day’s temp was probably 90-95 in the afternoon. One event saw 105!
Thanks again, and good luck this season!
Well, if the Supercars like heat, they’ll get it where I AX. The average AX day’s temp was probably 90-95 in the afternoon. One event saw 105!
Thanks again, and good luck this season!
Burning Brakes
Joined: Jan 2014
Posts: 1,078
Likes: 262
From: swoyersville pa
I’m assuming you run the stock wheels, or at least the stock width rims. Any concerns with using the 8.5” rims for the 265’s?
Well, if the Supercars like heat, they’ll get it where I AX. The average AX day’s temp was probably 90-95 in the afternoon. One event saw 105!
Thanks again, and good luck this season!
Well, if the Supercars like heat, they’ll get it where I AX. The average AX day’s temp was probably 90-95 in the afternoon. One event saw 105!
Thanks again, and good luck this season!
Racer
Joined: Jan 2012
Posts: 468
Likes: 67
From: El Dorado Hills, CA
Well, you’ve sold me on the Supercar 3’s. I’m going with the 265/35/19 and 305/30/20. Hopefully, the difference in diameters, front to back, won’t confuse the electronics. Stock is 1.4” and this configuration is 0.9”.
What tire pressures are you starting with, and do you have an experimenting protocol you use with a new tire set up?
Thanks again!
What tire pressures are you starting with, and do you have an experimenting protocol you use with a new tire set up?
Thanks again!
Burning Brakes
Joined: Jan 2014
Posts: 1,078
Likes: 262
From: swoyersville pa
Well, you’ve sold me on the Supercar 3’s. I’m going with the 265/35/19 and 305/30/20. Hopefully, the difference in diameters, front to back, won’t confuse the electronics. Stock is 1.4” and this configuration is 0.9”.
What tire pressures are you starting with, and do you have an experimenting protocol you use with a new tire set up?
Thanks again!
What tire pressures are you starting with, and do you have an experimenting protocol you use with a new tire set up?
Thanks again!
These are 295/30/20 R71R’s- to skinny for me on a 11 wide wheel but look at tire wear , it’s perfect and this is with 2.6 degrees negative camber and 1/4 toe in and driving them to and from events 2 hours away.the fronts were so nice my son stole them and put them on his camaro.
Racer
Joined: Jan 2012
Posts: 468
Likes: 67
From: El Dorado Hills, CA
Glad you were able to keep them in the family.
I ordered the Supercar 3’s today, from tire rack. I believe I got one of the last complete sets. COVID has hit all tire mfgs and they are prioritizing their production capacity to satisfy the automotive industry’s immediate assembly line requirements.
Glad I got mine today...... and that was not without drama. First they said they had no Supercar 3’s. Then they said they did. Turns out they were 3R’s. Then they “found” the correct set. Oh, well, all’s well that ends well.
It’ll be interesting to see how the Supercar 3’s perform. Will definitely go for -3 on camber, up front
I ordered the Supercar 3’s today, from tire rack. I believe I got one of the last complete sets. COVID has hit all tire mfgs and they are prioritizing their production capacity to satisfy the automotive industry’s immediate assembly line requirements.
Glad I got mine today...... and that was not without drama. First they said they had no Supercar 3’s. Then they said they did. Turns out they were 3R’s. Then they “found” the correct set. Oh, well, all’s well that ends well.
It’ll be interesting to see how the Supercar 3’s perform. Will definitely go for -3 on camber, up front
Burning Brakes
Joined: Jan 2014
Posts: 1,078
Likes: 262
From: swoyersville pa
Glad you were able to keep them in the family.
I ordered the Supercar 3’s today, from tire rack. I believe I got one of the last complete sets. COVID has hit all tire mfgs and they are prioritizing their production capacity to satisfy the automotive industry’s immediate assembly line requirements.
Glad I got mine today...... and that was not without drama. First they said they had no Supercar 3’s. Then they said they did. Turns out they were 3R’s. Then they “found” the correct set. Oh, well, all’s well that ends well.
It’ll be interesting to see how the Supercar 3’s perform. Will definitely go for -3 on camber, up front
I ordered the Supercar 3’s today, from tire rack. I believe I got one of the last complete sets. COVID has hit all tire mfgs and they are prioritizing their production capacity to satisfy the automotive industry’s immediate assembly line requirements.
Glad I got mine today...... and that was not without drama. First they said they had no Supercar 3’s. Then they said they did. Turns out they were 3R’s. Then they “found” the correct set. Oh, well, all’s well that ends well.
It’ll be interesting to see how the Supercar 3’s perform. Will definitely go for -3 on camber, up front
Racer
Joined: Jan 2012
Posts: 468
Likes: 67
From: El Dorado Hills, CA
You’ve got it! The first AX will be late March! Of, one of front coolant fans failed last week. The car remains cool. Replacement part came in, so should have it replaced in the next week or so.
Talk to you once the season gets rollin’
i like your car’s color. A friend also has a white. Mine is Ceramic Matrix Gray Metallic . Vin number 0610 and was produced in mid March.
Talk to you once the season gets rollin’
i like your car’s color. A friend also has a white. Mine is Ceramic Matrix Gray Metallic . Vin number 0610 and was produced in mid March.
Melting Slicks
Joined: Oct 2004
Posts: 2,187
Likes: 173
From: Nevada
Will you be tracking on the same tires or do you have a dedicated set of track tires? If it is the same tires then I wouldn't worry about it as you'll wear them out on track long before any effect of street miles. If you add the washers back in the toe will change and too much toe is a bigger killer of tires than camber.