SCCA Solo C Street Discussion

[AustinTX]

Originally Posted by ABQautoxer

I happen to have the car that won nats last year local to me and our area favors power courses so it's not like myself and others involved in the decision making process are blind despite the hints previously we aren't watching, concerned, or careful.

I wish that car had stayed local for a while longer so I could size the BRZ up. There is a 370Z in our area, and I plan to codrive it for head to head comparison

[ABQautoxer]

I still want to see the 370z/RX8 comparison plays out but I have plans to prep mine too far this year.

John why are you not building an STX car out of it already

[AustinTX]

BTDT and can codrive whenever I get the urge

[mrazny]

Then for one year that will show up consistently all across the nation and especially at tours/pros/nats and the 370z will be moved via the 12-month rule.

Chase the rabbit, there will be more than 3 trophy spots at Nats and many tours, and that extra effort to catch the uncatchable will pay dividends in 2015 with total speed in development.

[Charlie Davis]

Originally Posted by JeffHNY

I know I saw the ZII switch occur in RTR as stated earlier and saw Heitkotter check out on us after session one when he switched to them from Rivals.

Are you saying Bryan was on Rivals at some point at the Pro Finale? If so, you are incorrect. I have never had Rivals under the car that Bryan and I share. For the record, we had 3 different rear suspension configurations in 3 sessions, but ran ZIIs for all 3 sessions. And, we found that the ZIIs only had about one run on each side in the Sat. PM and Sun. AM sessions before getting overheated.

Charlie Davis
aka "Bryan's car owner"

[DylanFRS]

Originally Posted by Charlie Davis

Are you saying Bryan was on Rivals at some point at the Pro Finale? If so, you are incorrect. I have never had Rivals under the car that Bryan and I share. For the record, we had 3 different rear suspension configurations in 3 sessions, but ran ZIIs for all 3 sessions. And, we found that the ZIIs only had about one run on each side in the Sat. PM and Sun. AM sessions before getting overheated.

Charlie Davis
aka "Bryan's car owner"

I'd love to hear more of your thoughts on the ZIIs. I was about to pull the trigger on buying some.

My thoughts on tires thus far, please add input where I could be wrong...

RS3s: Great grip when hot (~180*F) but soft sidewalls makes them less than optimal for camber challenged cars. My own experience is that I had to run them at 40psi just to keep off the sidewalls on the front.

Rivals: Great tire every where but at Lincoln, the one place it matters most.

ZIIs: Don't require as much heat as the RS3s and have much stiffer sidewalls making them better on cars with less than optimal camber. Good on the surface at Lincoln

That is how I came to the decision to run the ZIIs this year. Temp problems on hot days can be, at least partially, remedied with a water sprayer. I have always felt like it is easier to get heat out of the tires between runs than to get heat in them.

I would love to hear some more thoughts on the subject since there doesn't seem to be a clear choice for CS this year, at least not on this board.

[Kido1986]

You summed up my tire thoughts exactly. I LOVED my RS3s, ran them for 2 years (Mazda 3 for 6 months then BRZ for 18) but they just aren't stiff enough. They are epic in Florida's hot summers.

But I'm now on the ZII and love it. Im sure this summer will be hard with sprays on every run though.

Rivals have been mediocre on this car everywhere. And they chunk badly when overheated, and Florida overheats badly. And 100% useless on a BRZ at Nationals. Sooooo much oversteer and collects OPR as fast as a Hoosier!

[FastWhite]

What size are you running for the ZII's



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[Kido1986]

235/40/17 The math says its shorter than 215/45 but it's EVER so slightly taller than my 215 RS3s

[FastWhite]

Thanks Henry.
I had asked the tire installer if they would install this size and they "recommended" against it. I didn't push it.
In CS, the extra width helps. Now if I push it will they install? That and are you running a dedicated set for autocross or do you use them for DD?
Just trying to determine my mod path. If I buy wheels then I will go STX. sigh!!!!


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[Kido1986]

You can DD them, they just dont go for a lot of miles.

I don't DD them. I have a second car and a second set of wheels for the BRZ. I occasionally street drive them but mostly just to-and-from events.

0 problems with running 235 from a safety side, they just don't 'recommend' it because they deal with the average Joe's Camry every day, not someone who bought a car with a purpose. These guys just know a book tells them no. And in some crappy 600tw All Season that they sold to your Aunt Susie for her Altima, 235s on that 7" would be a bad thing as they are too soft. This is a different case entirely.

[FastWhite]

Great, thanks


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[AlanLGuy]

Originally Posted by FastWhite

Thanks Henry.
I had asked the tire installer if they would install this size and they "recommended" against it. I didn't push it.
In CS, the extra width helps. Now if I push it will they install? That and are you running a dedicated set for autocross or do you use them for DD?
Just trying to determine my mod path. If I buy wheels then I will go STX. sigh!!!!


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I daily'd on a set of Z1 Star specs last season and won't do it again, after a few months of daily driving the rubber didn't grip nearly as well. I got about a season and a half out of them, but the last half of the season they were pretty awful. I hate to buy another set of stock size wheels for this season when chances are I'll be moving to STX next season anyways, but I feel like it's worth it for the life of the tire and the daily driving comfort.

[Filipino Royale]

is there a big difference in 235 45 17 and 235 40 17.