Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
Jason 98 TA
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Technical Camaro Topics > Road Course/Track and Autocross


Reply
 
Thread Tools
Old 05-15-2018, 01:10 AM   #1
PDXSSCE
Yee-aay-ee!
 
PDXSSCE's Avatar
 
Drives: 2015 2SS/RS L99 Vert Commem Ed.
Join Date: Nov 2015
Location: ORegon
Posts: 2,022
Question Camaro Wheels for Autocross and/or Track Day

These are noob questions but hopefully Camaro drivers with experience will share their knowledge.

Which are best for road course handling, such as autocross and/or track days: 18x8 wheels with more rubber or 20x8 wheels with less rubber?

What's the difference between autocross & track days?

PDXSSCE is offline   Reply With Quote
Old 05-15-2018, 08:58 AM   #2
PROZ11
 
PROZ11's Avatar
 
Drives: 2012 RS/2SS, 69 ProStreet Camaro
Join Date: Oct 2011
Location: North NJ
Posts: 469
You may get more answers to this in the Road Course/Track and Autocross section.

.
__________________
PROZ11 is offline   Reply With Quote
Old 05-15-2018, 09:53 AM   #3
00 Z/28
 
00 Z/28's Avatar
 
Drives: 2011 Camaro SS/RS
Join Date: Jun 2016
Location: Atlanta, GA
Posts: 182
Well GM saw fit to put 19" wheels on the Z/28, which is built for that sort of thing. So I might look in that direction.
__________________
2011 SIM 2SS/RS L99/A6, Rotofab CAI, TSP LTs & hi-flows, SW Retro catback, BMR & Hotchkis goodies, MRR 017s & Nitto 555G2s
00 Z/28 is offline   Reply With Quote
Old 05-16-2018, 09:26 AM   #4
Norm Peterson
corner barstool sitter
 
Norm Peterson's Avatar
 
Drives: 08 Mustang GT, 10 Legacy 2.5GT, ...
Join Date: Jul 2012
Location: Eastern Time Zone
Posts: 5,711
Regardless of diameter, 8" isn't nearly wide enough. The only exception would be in autocross where you might be faced with a class rule that limits your wheels to that width because that's what your came with as stock. Basically, where you don't have a choice.

Autocross is a low speed event (typically under 60 mph) in a parking lot, so there isn't much room for straights of any real length. As an auto-x newbie, you probably won't even need to use 3rd gear.

Track days are at much higher speeds (typically above 60 mph except in the slowest corners) and the corners aren't nearly as close together. The condition of your car's brakes and brake fluid become much more important.


Norm
__________________
'08 GT coupe 5M, wheels, tires, pads, fluid, a few suspension mods . . . still almost at stock height
'10 LGT 6M (hers) and an '01 Maxima 5M (spare)
Norm Peterson is offline   Reply With Quote
Old 05-31-2018, 09:53 AM   #5
wakespeak

 
wakespeak's Avatar
 
Drives: 2013 2SS LS3/NPP
Join Date: Sep 2012
Location: Austin, Texas
Posts: 1,105
You need at least 10" up front IMO. 10.5 let you use 305s, which are likely ideal. I am on 285/35 and lots of cars turn inside of me.
__________________
NPP, 1LE track pack, ZL1/1LE shifter, Apex catch can, 1LE oil separator, CTSV 6-piston front upgrade,1LE strut tower brace. Gen6 1LE wheels. Pegasus Aluminum Rear Cradle Bushings. Z/28 upper control arm bushings. JRE built 3.91/TrueTrac diff. JRE tune for stock engine.
wakespeak is offline   Reply With Quote
Old 05-31-2018, 10:52 AM   #6
PDXSSCE
Yee-aay-ee!
 
PDXSSCE's Avatar
 
Drives: 2015 2SS/RS L99 Vert Commem Ed.
Join Date: Nov 2015
Location: ORegon
Posts: 2,022
Based on all your responses, it seems that a second vehicle for track days is more suitable than running mine.
PDXSSCE is offline   Reply With Quote
Old 06-01-2018, 08:12 AM   #7
Norm Peterson
corner barstool sitter
 
Norm Peterson's Avatar
 
Drives: 08 Mustang GT, 10 Legacy 2.5GT, ...
Join Date: Jul 2012
Location: Eastern Time Zone
Posts: 5,711
With a brake fluid change to one of the better DOT4 brands and entry-level track pads, it'll be good enough to get you started. From there assuming that you do get 'hooked', it can become a very slippery slope as you get better and more confident as a driver and more aware of what the car ought to be able to do better . . . or at least feel better while doing whatever that might be.

On that mater of 'feel', putting wider rubber on your existing wheels might actually manage to reach a slightly higher peak grip than what you've got on there now. But they won't be as quick to respond to steering inputs, and the steering won't be as linear or as precise as if those same tires were installed on wider wheels.


Norm
__________________
'08 GT coupe 5M, wheels, tires, pads, fluid, a few suspension mods . . . still almost at stock height
'10 LGT 6M (hers) and an '01 Maxima 5M (spare)
Norm Peterson is offline   Reply With Quote
Old 06-08-2018, 08:04 AM   #8
joelster

 
Drives: '94 Z28+ '15 Z/28
Join Date: Jun 2009
Location: Cheektowaga, NY
Posts: 907
Quote:
Originally Posted by 00 Z/28 View Post
Well GM saw fit to put 19" wheels on the Z/28, which is built for that sort of thing. So I might look in that direction.
They put 19" wheels on the Z/28 because it was the most cost effective way to lower the car. The 20" 1LE/ZL-1 wheels had it sitting higher than they wanted. Tire selection is not nearly as good with 19" wheels.
__________________
'94 Z28, 414" LT1, 10.15 at 133.65 N/A pump gas
'15 Z/28 Red Hot, A/C
joelster is offline   Reply With Quote
Old 06-08-2018, 10:16 AM   #9
Norm Peterson
corner barstool sitter
 
Norm Peterson's Avatar
 
Drives: 08 Mustang GT, 10 Legacy 2.5GT, ...
Join Date: Jul 2012
Location: Eastern Time Zone
Posts: 5,711
Quote:
Originally Posted by joelster View Post
They put 19" wheels on the Z/28 because it was the most cost effective way to lower the car.
Not screwing with the suspension geometry any more than absolutely necessary is apt to be a worthwhile approach in and of itself.


Norm
__________________
'08 GT coupe 5M, wheels, tires, pads, fluid, a few suspension mods . . . still almost at stock height
'10 LGT 6M (hers) and an '01 Maxima 5M (spare)
Norm Peterson is offline   Reply With Quote
Old 06-29-2018, 05:47 PM   #10
PDXSSCE
Yee-aay-ee!
 
PDXSSCE's Avatar
 
Drives: 2015 2SS/RS L99 Vert Commem Ed.
Join Date: Nov 2015
Location: ORegon
Posts: 2,022
My buddy purchased a 2017 LS, which has factory 18x8.5 wheels & 245/50/18 tires. We were discussing visiting a road course & he wants to swap to performance tires for now. Should the size remain the same, change to 255/45/18, 245/45/18 or ....?
__________________
PDXSSCE is offline   Reply With Quote
Old 06-30-2018, 08:09 AM   #11
Norm Peterson
corner barstool sitter
 
Norm Peterson's Avatar
 
Drives: 08 Mustang GT, 10 Legacy 2.5GT, ...
Join Date: Jul 2012
Location: Eastern Time Zone
Posts: 5,711
Sounds like it's going to be first time out for a couple of people..

Assuming that the tires the car has on it now will pass tech (tread depth, overall condition), he should just drive the car the way he's familiar with it being. If the tires need replacement, I think staying with 245/50's would be the way to go. That way he gets to use them in his DD without any downsides. If he gets hooked, he's going to want to step up well past 255's and 18x8.5's.

Side note - most track day organizations require a roll bar in order to track a convertible, and it will probably have to meet some spec.


Norm
__________________
'08 GT coupe 5M, wheels, tires, pads, fluid, a few suspension mods . . . still almost at stock height
'10 LGT 6M (hers) and an '01 Maxima 5M (spare)
Norm Peterson is offline   Reply With Quote
Old 06-30-2018, 08:19 AM   #12
joelster

 
Drives: '94 Z28+ '15 Z/28
Join Date: Jun 2009
Location: Cheektowaga, NY
Posts: 907
He should probably do a few autocrosses first before attempting a road course.
__________________
'94 Z28, 414" LT1, 10.15 at 133.65 N/A pump gas
'15 Z/28 Red Hot, A/C
joelster is offline   Reply With Quote
Old 06-30-2018, 08:28 AM   #13
Norm Peterson
corner barstool sitter
 
Norm Peterson's Avatar
 
Drives: 08 Mustang GT, 10 Legacy 2.5GT, ...
Join Date: Jul 2012
Location: Eastern Time Zone
Posts: 5,711
Quote:
Originally Posted by joelster View Post
He should probably do a few autocrosses first before attempting a road course.
Agreed.


Norm
__________________
'08 GT coupe 5M, wheels, tires, pads, fluid, a few suspension mods . . . still almost at stock height
'10 LGT 6M (hers) and an '01 Maxima 5M (spare)
Norm Peterson is offline   Reply With Quote
Old 06-30-2018, 02:38 PM   #14
PDXSSCE
Yee-aay-ee!
 
PDXSSCE's Avatar
 
Drives: 2015 2SS/RS L99 Vert Commem Ed.
Join Date: Nov 2015
Location: ORegon
Posts: 2,022
Quote:
Originally Posted by Norm Peterson View Post
Sounds like it's going to be first time out for a couple of people..

Assuming that the tires the car has on it now will pass tech (tread depth, overall condition), he should just drive the car the way he's familiar with it being. If the tires need replacement, I think staying with 245/50's would be the way to go. That way he gets to use them in his DD without any downsides. If he gets hooked, he's going to want to step up well past 255's and 18x8.5's.

Side note - most track day organizations require a roll bar in order to track a convertible, and it will probably have to meet some spec.

Norm
Hey Norm, I've been reading about tracking & I'm wondering why you prefer a Mustang for the track? I assure you, it's a sincere inquiry, not to bash your car. My understanding is that the solid rear axle is great in straight line acceleration, but an independent rear suspension is best for the track. Your knowledge is greatly appreciated.
__________________
PDXSSCE is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 09:24 AM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions, Inc.