Page 1 of 1
Tread wear rules?
Posted: Sat May 21, 2011 11:14 pm
by Cam Correa
I'm currently running STS & I think thats a rule of 140 Tread wear?
Is there a simple rule of TW rules & how they effect class?
Lets say I run a 50 TW or lets say a 200 TW how does this all come into play with TW?
Re: Tread wear rules?
Posted: Sun May 22, 2011 12:40 am
by Q V
simple rule is: street tire classes are all 140 and more.
if you run something lower than 140, then you are no longer in a street tire class.
Re: Tread wear rules?
Posted: Sun May 22, 2011 5:43 am
by Cam Correa
Quoc-Viet Dang wrote:simple rule is: street tire classes are all 140 and more.
if you run something lower than 140, then you are no longer in a street tire class.
All things remaining the same ( Currently in STS ) what would lower TW than 140 change me to?
Re: Tread wear rules?
Posted: Sun May 22, 2011 5:46 am
by Steve Ekstrand
CSP
Re: Tread wear rules?
Posted: Sun May 22, 2011 8:16 pm
by Arthur Grant
By the way you would stand a chance in CSP driver skills being equal unless you willing out engineer out spend Bill. The car isn't street drivable and there are formula cars that aren't that fast.
Re: Tread wear rules?
Posted: Sun May 22, 2011 9:10 pm
by Cam Correa
Arthur Grant wrote:By the way you would stand a chance in CSP driver skills being equal unless you willing out engineer out spend Bill. The car isn't street drivable and there are formula cars that aren't that fast.
Are you saying I'm not doing to bad for a newbie? Or am I misunderstanding your point?
Re: Tread wear rules?
Posted: Sun May 22, 2011 9:15 pm
by Kurt Rahn
Cam Correa wrote:Arthur Grant wrote:By the way you would stand a chance in CSP driver skills being equal unless you willing out engineer out spend Bill. The car isn't street drivable and there are formula cars that aren't that fast.
Are you saying I'm not doing to bad for a newbie? Or am I misunderstanding your point?
I think he left out a very crucial "not."
Re: Tread wear rules?
Posted: Sun May 22, 2011 9:24 pm
by Q V
Bill runs PAX anyway.
Art, it's the same situation for you & your car in BSP, but you're still having a ball!
Re: Tread wear rules?
Posted: Sun May 22, 2011 9:40 pm
by Cam Correa
Kurt Ra wrote:Cam Correa wrote:Arthur Grant wrote:By the way you would stand a chance in CSP driver skills being equal unless you willing out engineer out spend Bill. The car isn't street drivable and there are formula cars that aren't that fast.
Are you saying I'm not doing to bad for a newbie? Or am I misunderstanding your point?
I think he left out a very crucial "not."
Yeah that makes more sense...
& Yes QV, I'm loving it.This event was even better than the last one & I figure the next one will be even more so.
BTW, Thank to the guys for putting on this event both days were awesome if you ask me.

Re: Tread wear rules?
Posted: Sun May 22, 2011 9:44 pm
by Arthur Grant
Good catch QV I missed the not.
Your doing fine for a nubie, what I don't understand is why you aren't running novice?
Re: Tread wear rules?
Posted: Sun May 22, 2011 9:49 pm
by Cam Correa
Arthur Grant wrote:Good catch QV I missed the not.
Your doing fine for a nubie, what I don't understand is why you aren't running novice?
I am Running Novice & it is on both sides of my car, the NOV is there , Yet I had a couple of people tell me to make sure rick has me in Novice when the results are posted...
Being you mentioned "Novice" I must ask is there a link to properly explain to me what qualifies someone to run "Novice" vs what is not qualified?
Some things today confused me....?
Re: Tread wear rules?
Posted: Sun May 22, 2011 9:56 pm
by Q V
Supp Regs, linked in the New to Sport FAQ under the Newbie to Autocross Forums. do a search for "Novice" in that pdf.
"Eligibility: A person who has participated no more than 3 days per year within the last 3
years. A day is defined as any autocross or Solo event, practice or school run by any
organization not limited to CSCC Solo or SCCA."
Re: Tread wear rules?
Posted: Sun May 22, 2011 10:02 pm
by Cam Correa
Quoc-Viet Dang wrote:Supp Regs, linked in the New to Sport FAQ under the Newbie to Autocross Forums. do a search for "Novice" in that pdf.
"Eligibility: A person who has participated no more than 3 days per year within the last 3
years. A day is defined as any autocross or Solo event, practice or school run by any
organization not limited to CSCC Solo or SCCA."
Ok, as always QV I can always count on you for help, You da ORANGE bomb!

Re: Tread wear rules?
Posted: Sun May 22, 2011 10:31 pm
by KJ Christopher
Cam Correa wrote:Arthur Grant wrote:Good catch QV I missed the not.
Your doing fine for a nubie, what I don't understand is why you aren't running novice?
I am Running Novice & it is on both sides of my car, the NOV is there , Yet I had a couple of people tell me to make sure rick has me in Novice when the results are posted...
Being you mentioned "Novice" I must ask is there a link to properly explain to me what qualifies someone to run "Novice" vs what is not qualified?
Some things today confused me....?
Yep. It is in our local rules (Supplemental Regulations
http://solo2.com/supp_regs/SCCA_Cal_Clu ... s_2011.pdf" onclick="window.open(this.href);return false;) that several have suggested you look over. }:)
NOVICE (NOV) and NOVICE LADIES (NOVL)
A. Purpose of this class: To encourage new members/competitors to participate in
autocross and be introduced into the community in a class structured for their needs.
Also, to allow them to sharpen their skills without being discouraged by “getting their
doors blown off” by more experienced drivers.
B. Eligibility: A person who has participated no more than 3 days per year within the last 3
years. A day is defined as any autocross or Solo event, practice or school run by any
organization not limited to CSCC Solo or SCCA.
C. Novice class competitor’s cars must be classed in classes that are outlined in the SCCA
Solo National rules or in the CSCC Solo supplementary regulations. The competitor will
compete at the same time as the competitors in those classes but will be scored with the
other Novice class competitors throughout the day.
D. There will be a guided Novice course walk before the first run group in the morning and
during the lunch break before the afternoon run groups.
E. Class results are based on the entrant’s best time multiplied by the index listed in
Appendix C of the CSCC Solo supplementary regulations class plus any penalty.
F. Year end points will be calculated for these classes based on the six best results for
each driver.
Re: Tread wear rules?
Posted: Tue May 24, 2011 10:55 am
by Doug Kott
Cam Correa wrote:Quoc-Viet Dang wrote:simple rule is: street tire classes are all 140 and more.
if you run something lower than 140, then you are no longer in a street tire class.
All things remaining the same ( Currently in STS ) what would lower TW than 140 change me to?
You could also run CSM (CST's equivalent, but sub-140 treadwear), but it's a lightly attended class, if attended at all.
Re: Tread wear rules?
Posted: Wed May 25, 2011 1:03 pm
by Larry Chong
So with SCCA rules prohibiting methanol injection, what are the rules concerning practices and champs? CST is intended to encourage the run what you brought type of thinking, but that goes against the rules. I'd like to run my other car, but that doesn't seem like it'll be possible?
Re: Tread wear rules?
Posted: Wed May 25, 2011 2:46 pm
by Sebastian Rios
The use of methanol injection (like nitrous oxide) is banned not because of classing but because of safety. Since that is the case we cannot allow it at our local events regardless of car class.
Re: Tread wear rules?
Posted: Wed May 25, 2011 4:04 pm
by Tom Denham
Sebastian Rios wrote:The use of methanol injection (like nitrous oxide) is banned not because of classing but because of safety. Since that is the case we cannot allow it at our local events regardless of car class.
I have a what if ? Seb. What if a nitrous bottle is present , but empty? does it need to be removed?? Same for the Meth, if the system/tank is present but no alcohol is in the tank ??
Would that allow a car in CST? i dont see why not but it never hurts to ask.
Re: Tread wear rules?
Posted: Wed May 25, 2011 4:37 pm
by Sebastian Rios
I think in the case of the nitrous tank, it should be removed. There is no easy way to know if it's empty.
On the meth system, I think if it's empty, it should be ok, probably easy enough to tell if it's empty.
Water injection is ok, but not a mix, so it would be hard to tell if it's water or a mix of water and alcohol...At some point we have to rely on the competitor to be honest.
Re: Tread wear rules?
Posted: Wed May 25, 2011 4:58 pm
by Rick Brown
Sebastian Rios wrote:I think in the case of the nitrous tank, it should be removed. There is no easy way to know if it's empty.
On the meth system, I think if it's empty, it should be ok, probably easy enough to tell if it's empty.
Water injection is ok, but not a mix, so it would be hard to tell if it's water or a mix of water and alcohol...At some point we have to rely on the competitor to be honest.
Just tell them to open the valve/connection and throw a match at it...............
Re: Tread wear rules?
Posted: Wed May 25, 2011 8:09 pm
by Kurt Rahn
Rick Brown wrote:Just tell them to open the valve/connection, put their face in front of it and throw a match at it...............
Fixed that for 'ya.
Re: Tread wear rules?
Posted: Wed May 25, 2011 8:53 pm
by Cam Correa
Do they actually drug test us for Meth?

LOL!
Does anything that could not be used on race day, really effect us on Practice days?
I have some TW 50 Tires a friend gave me with some tread left & I'd love to try them out yet realize I could in no way run STS with them.
Yet it would be cool to see what it does with all other things on my car remaining the same...
Re: Tread wear rules?
Posted: Thu May 26, 2011 10:09 am
by Sebastian Rios
It's not about classing or performance, it's about safety. No nitrous, no alcohol injection on a practice day...You can run whatever tire you want as long as it doesn't have cords showing or pose some other safety issue.
Re: Tread wear rules?
Posted: Wed Jun 01, 2011 9:42 am
by John Stimson
Section 3.3 of the rules deals with the safety requirements to be allowed to run. The rules about which class you compete in start in chapter 13.
On page 28 of the 2011 Solo rules, #22, you can't have alcohol in your injection system. So the equipment can be there, but no alcohol in it.
I don't see a clear prohibition against nitrous oxide, although 3.6.B (on fuels) may cover it by prohibiting nitrogen or oxygen bearing additives. Although I normally think of fuel additives as being liquids, and N2O is a gas. It's injected into the air, not the fuel, right?
I'm not saying that I think the SCCA didn't mean to ban the use of nitrous oxide. I do think it's strange that there isn't a clearer rule about it.