[glamcem]

Originally Posted by red6.2

when do you typically do oil changes on the car? after 3-4 days on track?

I typically change after every 2k miles when/if I track the car or every 3-4 track days and regularly check the level and discoloration during the event. I wanted to get rid of the factory oil after break-in so first change has been done at 700 miles.

[glamcem]

Some updates:
I have received the Goodyear Supercar 3R tires last night (crazy fast shipping by TireRack) and learned they sent my TPMS sensors and the 19" Apex wheels will be here. I am hoping that I can have them installed it sometime next week.

On a side note, when I picked up one of the tire, it felt like a bit wide for a 305 tire and light. To see if it's true I put them side by side with the 315/30/18 RR tires and surprisingly these SC3Rs are about 8-9mm wider than the RRs. I will measure them once they're installed but I am not sure if it's going to make a big difference.

Interestingly, according to TireRack, the treadwidth of the 315 RRs are about 10mm/0.4" wider than the 305 SC3Rs on the same measured rim width (11") so another typo and we have another cheater tire maybe?

I will report back when I have the new wheels/tires installed.





SC3Rs are also only .6lbs heavier than those RRs even when being wider and much taller than them




Other than the RR set that's already installed on the car I will have 2 additional track set and the OEM wheels/tires so it should be enough for this season.

[carguy55]

wow, that's a lot of rubber! Interesting comparison. I'm very interesting also in the on track comparo of these 2 tires. You must be using a big trailer setup to haul stuff.

[glamcem]

Originally Posted by carguy55

wow, that's a lot of rubber! Interesting comparison. I'm very interesting also in the on track comparo of these 2 tires. You must be using a big trailer setup to haul stuff.

Yes, I will be towing. However, I have been using the RRs on the road too (drive to and come back from track as well as some city driving) with no issues, they don't HC out. Even in the wet they have been fine, I would just avoid standing water/ puddles.. it's been over 40Fs for while. For the SC3Rs it shouldn't be an issue also since it's the OEM tires for the ZLE, it may take longer to warm them up compared to RRs though since I hear they are similar to Cup2s in that regard (takes bit longer to warm up)

[Apex Wheels]

Glad to see you back in a Camaro, Cem! Damn the 6th Gen looks great with SM-10 wheels on it, glad those are in motion now for everyone else to try

[glamcem]

Originally Posted by APEXRaceParts

Glad to see you back in a Camaro, Cem! Damn the 6th Gen looks great with SM-10 wheels on it, glad those are in motion now for everyone else to try

Thanks,glad to be back

Since I also wanted to try the ZL1 1LE tires, I went ahead and ordered the Apex AR-8 wheels in 19x11 +11 (returned the previously ordered 19x10.5") and 19x11" +43 offset wheels. This way, I will also be able to compared to staggered setup in 18" SM-10 wheels.

They both look great, imo The new wheels and tires will be mounted and balanced this Tuesday so that I can compare the actual widths between the 315 RRs on 18x11" and Goodyear SC3Rs on 19x11". Hopefully, I will be able to compare them on the track next Saturday

Weights are slightly heavier than what's displayed on the website FYI,

The front wheel (19x11 +11)


And the rear (19x11" +43 offset)


test fitted on the rears

[glamcem]

So the car is long gone but I decided to create this split video to show my ND Miata and my friends' race NC Miata (driven by Randy Pobst) for fun . He had a stint with my friends' race team (ATA Racing) during Lucky Dog Racing event at the Ridge Motorsports Park (RMP) last year.

Please see video description for more details

[carguy55]

Well I got 1 track day with the 19" 305 G3R setup at COTA before everything shutdown. Went 4.6 seconds faster and got to play with some GT3s and fun other cars.

[glamcem]

Originally Posted by carguy55

Well I got 1 track day with the 19" 305 G3R setup at COTA before everything shutdown. Went 4.6 seconds faster and got to play with some GT3s and fun other cars.

very cool, that's a significant drop in lap times. I am heading to the ORP tomorrow, cannot wait to test the RRs and SC3Rs

[FollowMyLine]

Originally Posted by glamcem

very cool, that's a significant drop in lap times. I am heading to the ORP tomorrow, cannot wait to test the RRs and SC3Rs

Good luck today! Can’t wait to see your review between the two tires.

[glamcem]

Originally Posted by M0DRN71

Good luck today! Can’t wait to see your review between the two tires.

Thank you! Will do

[TheRealJA105]

Originally Posted by carguy55

Well I got 1 track day with the 19" 305 G3R setup at COTA before everything shutdown. Went 4.6 seconds faster and got to play with some GT3s and fun other cars.

Awesome!

Originally Posted by glamcem

very cool, that's a significant drop in lap times. I am heading to the ORP tomorrow, cannot wait to test the RRs and SC3Rs

Can't wait for your results!

[glamcem]

Originally Posted by TheRealJA105

:

Can't wait for your results!

Me too As I didn't have a fast car for about a couple years, I'm pretty sure it'll take me some time to get to my previous pace

[glamcem]

It was a nice day for a season opener at the ORP yesterday. Save for some mishaps and frustration early in the morning (data communication issues, GoPro charging, falling plastic trim that scared me as it could've gotten stuck between the brake pedal, rotating phone mount in the air vents. Thankfully club events are in open session format so it's not like I blew a whole session.

I had a chance to compare both tire/wheels (staggered RR setup in 18" vs SQ SC3Rs in 19" setup). Some photos from the event:


Morning Run with Apex SM-10 wheels and Toyo RR tires


and then with Apex ARC-8 wheels and SC3R tires






Those 19x11" Apex wheels with 305 SC3R tires look very beefy but Corvette fender flares do good job covering them IMO




Time to go back home




A few things to mention:
Due to small hiccups I mentioned above, I missed the opportunity of testing in the morning which is the most ideal time for an ultimate lap. It was mid 40s in the morning and by the time I had my all time PB , it was in mid 60s. Typically that kind of change in temps are accounted for about 2 seconds at the ORP. Since it was a sunny day, track temps are more noticeable compared to a cloudy day (even at the same ambient temps)

In addition to that, as I didn't drive a fast car like a Camaro, it takes me sometime to get into the previous pace after a Miata so there's that

I should say I am pretty happy with the sway bars, all that body roll issues with sticky tires were gone. Much less understeer and steering feedback too. Whereas with the previous car, I was having horrible understeer and body roll at tight corners.

I could only drive one session with RRs as I had to go back to paddock and fix some of that issues, I decided to mount the SC3Rs during the lunch hour since it was getting warmer to compare them. With the RRs, I was slightly behind my PB with the old car (1:55.2) but the optimal lap time shows 1:54.5 which is about the same with my previous PB with used slicks. Although the body roll was pretty much gone, I still noticed some corner entry understeer.

RRs were pretty consistent throughout the session though and warm up pretty quickly as expected. I had to go back and lower my tire pressures after about 6 laps. They reached 35-36 psi pretty quickly even when I started with 28psi. I dropped them to my target pressure which is 32psi and after that it looked like pressures stayed at a plateau .


And the video with RRs. As I mentioned if I had more time with them and could test them early in the morning I think I could shave another 1-1.5 seconds with them easily.




And now the SC3Rs. Holy cow, going with full 19x11" wheels all around and 305s (well we know they're wider than 315 RRs on same 11" wide wheels) made a big difference. Car immediately gave tons of confidence and it didn't only stop better but all that turn in and corner entry understeer were gone, thanks to added contact patch. It's so much easier to rotate the car with maybe a slight oversteer vs understeer (just the way I like in a sports car).

I ended up shaving 2.4 seconds in about 10 degree warmer weather. I have to mention though, I don't think the tire compound alone is responsible for that improvement but the combination of things. I am now thinking to get 18x11" wheels for up front so that I can run 315 RRs SQ as I already have them. Then I can try 315/30/18 Hankook Z214s which should be even faster than the SC3Rs. Car feels much more neutral with SQ setup, added rubber and roll resistance to compensate all that. Ryephile was completely correct about his assessment about SQ setup and roll bar rates.

Other thing to mention, 18" setup felt faster on straights because they're 2 lbs and shorter so if I can fit a 18x11" wheel I think things will change dramatically.
That said SC3Rs may be still faster than the RRs but I doubt they can be 2 seconds faster when compared to same width tires and wheels.

Anything close to (or below 1:50) at the ORP is very competitive lap time and I believe I can still shave another second or two on a cooler day and after more seat time. I am really hoping that I can take it below 1:51 that would be amazing.

Also, I did my best lap time on 6th lap with SC3Rs, just ignore the optimal lap saying 1:47s I am pretty sure RaceChrono merged some sectors or some other error. It's also very consistent like the RRs but maybe more available grip (we'll see if that's the case when I get some wider wheels to fit 315s)



Here's my all time PB at the ORP with SC3Rs