[jwisjw]

First event in the 2020 Camaro with HPS 5.0 in the front... The cars stopping power feels pretty amazing on the Hoosiers still and the ability to yaw the car into a braking zone is quite different over the 2017. It's really too early to tell but I feel like this is going to be a huge game changer on certain courses that challenged the earlier calibrations.



ESP 2020 Camaro Hoosier A7 AAS 10/19 Jeff
ESP 2020 Camaro Hoosier A7 AAS 10/19 Nicole

ESP 2020 Camaro Hoosier A7 AAS 10/20 Jeff
ESP 2020 Camaro Hoosier A7 AAS 10/20 Nicole

[apexit53]

Originally Posted by jwisjw

First event in the 2020 Camaro with HPS 5.0 in the front... The cars stopping power feels pretty amazing on the Hoosiers still and the ability to yaw the car into a braking zone is quite different over the 2017. It's really too early to tell but I feel like this is going to be a huge game changer on certain courses that challenged the earlier calibrations.



ESP 2020 Camaro Hoosier A7 AAS 10/19 Jeff
ESP 2020 Camaro Hoosier A7 AAS 10/19 Nicole

ESP 2020 Camaro Hoosier A7 AAS 10/20 Jeff
ESP 2020 Camaro Hoosier A7 AAS 10/20 Nicole

did you feel it needed brake pads or do you just like using these? also how is the lack of hard pedal?

[jwisjw]

Originally Posted by apexit53

did you feel it needed brake pads or do you just like using these? also how is the lack of hard pedal?

We needed the car to be more efficient under braking. From what Nicole can remember, it feels more like the C7GS stopping power wise.



Hard pedal is minimal - was comparing the course on Saturday to a friend with a C6Z and we used to have similar hard pedal issues... Saturday, it was non existent for us.

[Ummpwr]

Hello everyone, I want to say thanks for all your valuable inputs on this thread. I have autoxed for 14 ish yrs and recently got a 18 SS 1LE, Im racing in BS and love the cars versatility from comfortable driving to the track yet still fast on track. . I'm currently stock with the track alignment (2.6deg neg front camber)

My goal is to stay in bs and do some upgrades

Is this the front sway bar people recommend for the SS 1LE?
https://www.jegs.com/i/Hotchkis/515/...xoCeXAQAvD_BwE

I'm also saving for 19in wheels to go 305 on all corners.

Thanks , Eric

[94boosted]

Has anyone done any back to back tire testing on the SS 1LE?


I ran a 305/30/19 square RE71R last year but now that the Rival S 1.5 in the same size is cheaper I'm tempted to try a set of those. And to add to the options there are some folks saying the stock GYSC3's could be in the noise, especially now that they come in 295/30/19F and 325/30/19R. And of course the 295/35/20 Yokos

Originally Posted by Ummpwr

https://www.jegs.com/i/Hotchkis/515/...xoCeXAQAvD_BwE

That's the one, though I recommend buying from Jeff @ ProParts USA

[thothtp]

So I am looking for next years tires for my BS '19 1LE, and not sure which way to go.

I use a set of 19x10 and 19x11 APEX Arc8s as my autocross wheels. Last year I used square 305/30R19 RE71s, and they worked well enough. I would like to stick to the RE71s over the Rivals as the temperatures are cooler up here, and I think they work better in the rain (I daily drive these, save the stock wheels and GY tires for track days.)

So, do I stick to the 305/30R19s, or do I go down to 285/30R19s? I can't do 285 front and 305 rear, since the 285s are larger diameter and that would make the ABS angry, so I am stuck with square of one or the other.

I know the conventional wisdom is bigger is better, but 305s are really too big for a 10 inch wheel, so I am giving up a lot of responsiveness and possibly grip as well. Would I be better off putting a 285 on both ends? The 285 calls for a 9.5 to 11 inch wheel, putting it within the specifications for both ends, while a 305 calls for a 10.5-11.5 inch wheel, putting it out of spec for the front wheel.

So is it better to stay in the wheel spec with a 285, or go out of spec pinched on the front with a 305? This is the dilemma I am facing. Anyone tested something like this?

[apexit53]

Originally Posted by thothtp

So I am looking for next years tires for my BS '19 1LE, and not sure which way to go.

I use a set of 19x10 and 19x11 APEX Arc8s as my autocross wheels. Last year I used square 305/30R19 RE71s, and they worked well enough. I would like to stick to the RE71s over the Rivals as the temperatures are cooler up here, and I think they work better in the rain (I daily drive these, save the stock wheels and GY tires for track days.)

So, do I stick to the 305/30R19s, or do I go down to 285/30R19s? I can't do 285 front and 305 rear, since the 285s are larger diameter and that would make the ABS angry, so I am stuck with square of one or the other.

I know the conventional wisdom is bigger is better, but 305s are really too big for a 10 inch wheel, so I am giving up a lot of responsiveness and possibly grip as well. Would I be better off putting a 285 on both ends? The 285 calls for a 9.5 to 11 inch wheel, putting it within the specifications for both ends, while a 305 calls for a 10.5-11.5 inch wheel, putting it out of spec for the front wheel.

So is it better to stay in the wheel spec with a 285, or go out of spec pinched on the front with a 305? This is the dilemma I am facing. Anyone tested something like this?

Personally id stick with 305square

Also keep in mine the new falken will be out and they are offering it in a 315...

Ive wanted to set the falken, re71r and bfg in a 305 size but! I dont want to spend that kinda money lol

[thothtp]

Originally Posted by apexit53

Personally id stick with 305square

Also keep in mine the new falken will be out and they are offering it in a 315...

Ive wanted to set the falken, re71r and bfg in a 305 size but! I dont want to spend that kinda money lol

Is that a gut feel or is there testing you know about? I'm not criticizing as I think you are probably right, but I have been trying to find hard evidence that is the case - Andy Hollis did some testing in GRM that showed that going from a pinched tire to a wider in spec wheel on the same tire added significant grip, but that doesn't help us specifically in this case where you can't change wheel width. What I am looking for is data that shows how a pinched tire compares to a nominal width tire on the same wheel, and whether that will offset the amount of grip lost by losing 20mm off the rear tire with both options being "in spec" on the rear wheel.

[apexit53]

Originally Posted by thothtp

Is that a gut feel or is there testing you know about? I'm not criticizing as I think you are probably right, but I have been trying to find hard evidence that is the case - Andy Hollis did some testing in GRM that showed that going from a pinched tire to a wider in spec wheel on the same tire added significant grip, but that doesn't help us specifically in this case where you can't change wheel width. What I am looking for is data that shows how a pinched tire compares to a nominal width tire on the same wheel, and whether that will offset the amount of grip lost by losing 20mm off the rear tire with both options being "in spec" on the rear wheel.

Yeah honestly i am not sure. I dont have any hard data of what you are looking for. What i will say is that if you as the driver are more confident with a sharper tire, go that route!

Its why I ran 275s on the type r where others were going with 285s. I liked the sharpness and overall grip of that tire and it worked for me.

I will say as i am in the same boat with weather, its 90% the reason i run the Re71R. It works in all the weather we have here.

[thothtp]

Originally Posted by apexit53

Yeah honestly i am not sure. I dont have any hard data of what you are looking for. What i will say is that if you as the driver are more confident with a sharper tire, go that route!

Its why I ran 275s on the type r where others were going with 285s. I liked the sharpness and overall grip of that tire and it worked for me.

I will say as i am in the same boat with weather, its 90% the reason i run the Re71R. It works in all the weather we have here.

Unfortunately I only have experience on the 305s so it is hard to say how it feels relative to narrower. I bought the car in June last year so only have one season on it. It is hard to judge without doing back to back comparisons on the same day, but I don't feel like it lost much in the way of sharpness over my previous S2000 (which was admittedly on very pinched tires as well) or the stock GY tires that I ran two events on before getting the RE71s. Also unfortunately, those two events were outliers (one was in a VERY small lot, and the other was wet) so I don't even have a good feel from that.

All that being said, it felt pretty sharp on the 305s, and co drivers felt the same, so I may just stick to what I know unless I can find some other data.

Thanks for the help!

[ABQautoxer]

Most of the time unless you are a top level driver the difference between a 285 and 305 is "within the noise" on the 10" wheel. It's a lot more of a PITA the mount the 305 on a 10" as well as you probably know by now. I don't think it matters that much, I'd probably run the 305sq but that would be for flipping rotation reasons more than anything. That said I do run the 305s sq in my CAMC setup.

[MoreSpeed]

Originally Posted by thothtp

So I am looking for next years tires for my BS '19 1LE, and not sure which way to go.

I use a set of 19x10 and 19x11 APEX Arc8s as my autocross wheels. Last year I used square 305/30R19 RE71s, and they worked well enough. I would like to stick to the RE71s over the Rivals as the temperatures are cooler up here, and I think they work better in the rain (I daily drive these, save the stock wheels and GY tires for track days.)

So, do I stick to the 305/30R19s, or do I go down to 285/30R19s? I can't do 285 front and 305 rear, since the 285s are larger diameter and that would make the ABS angry, so I am stuck with square of one or the other.

I know the conventional wisdom is bigger is better, but 305s are really too big for a 10 inch wheel, so I am giving up a lot of responsiveness and possibly grip as well. Would I be better off putting a 285 on both ends? The 285 calls for a 9.5 to 11 inch wheel, putting it within the specifications for both ends, while a 305 calls for a 10.5-11.5 inch wheel, putting it out of spec for the front wheel.

So is it better to stay in the wheel spec with a 285, or go out of spec pinched on the front with a 305? This is the dilemma I am facing. Anyone tested something like this?

I did 285 front 305 Rear on my ZL1 with RE71s a few years back with no ill effect. The fronts were definitely taller, but it was hardly noticeable looking at the car and it did not foul up any of the electronics in AutoX or on the road. I did Hoosiers 295/315 last year which was fun but expensive. (and needed way more negative camber than I had) I will probably go with 305's square this year in the RE71s if I can get them to fit upfront with the magnetic suspension. Not sure if they will fit.

[detltu]

What are the general thoughts of the 1LE in BS? I see a few people are planning on running them this year, is it expected to be the car to have?

[apexit53]

Originally Posted by detltu

What are the general thoughts of the 1LE in BS? I see a few people are planning on running them this year, is it expected to be the car to have?

with the move of the tesla its up there.

That said I think this year is a crap shoot on whats "the car to have"

Its going to be diverse this year for sure especially with the Zsupra and M2 Comp pack going into BS this year.

Personally I think the supra is too soft, but its going to be so much more nimble around course. M2 comp could be interesting.. Always the GT350 will be there. Hard to say honestly, all i know is this year I have the car I wanted to own, not "the one for the class"