Tire/wheel size in stock class... next year?

[Yvan]

So it sounds like this year we are basically sticking with CASC-OR 2002 rules (more or less).

In stock class this allows any tire/wheel combo as long as the contact patch does not extend past the lip of the fender above the wheel (more or less).

I've heard rumours that next year we might move toward CNAC or SCCA rules.

These rules allow only tire/wheel size combinations that were available in stock configuration from the dealer (more or less).

Since I'm probably buying tires this year, does anyone know how the rules might change...?

[roooo]

Hopefully we can ignore the SCCA way of things .. otherwise I just ordered 15" wheels for nothing :D

CNAC rules differ from SCCA in that .. as far as I understand it having just read the rules (check section 5.3 & 5.4 of the rulebook) you can have 2 points in stock class.

- r-compound tires cost 1 point
- any size wheel is allowed with 1 point

So it's still ok for stock.

[Marsh]

This is why I won't be running the Prelude after this year. There is no R-compound made that will fit a Prelude rim and not be at least 1" bigger (which also screws up the yaw control). Besides the fact that I would be in the same class as the Integra R :rolleyes:

[miataboi]

Originally posted by Marsh
This is why I won't be running the Prelude after this year. There is no R-compound made that will fit a Prelude rim and not be at least 1" bigger (which also screws up the yaw control). Besides the fact that I would be in the same class as the Integra R :rolleyes:

"Yaw control" is for girls.

:p

What's wrong... can't hang with a REAL honda? ;)

[tanney]

"Yaw control" is for girls.

Whatever!

[andrew1984]

excuse myself for being a rookie, whats yaw control?

[Marsh]

On Corvettes, Cadilacs, Mercedes and BMW it is called stability control and makes it so that ham fisted rookies can't spin the car. On the 97-01 Honda Prelude it's called ATTS and elliminates understeer so that you can actually induce throttle on oversteer in a FWD car. I'm one of the only people you will find that is convinced it works, fortunatley I have some lumber to back it up now.

BTW Yaw is the vehicles ability to change direction.

[miataboi]

Originally posted by Marsh
On Corvettes, Cadilacs, Mercedes and BMW it is called stability control and makes it so that ham fisted rookies can't spin the car. On the 97-01 Honda Prelude it's called ATTS and elliminates understeer so that you can actually induce throttle on oversteer in a FWD car. I'm one of the only people you will find that is convinced it works, fortunatley I have some lumber to back it up now.

BTW Yaw is the vehicles ability to change direction.

No it isn't..
"Definition: The rotation of the vehicle's body around its center point as viewed from above. When a vehicle enters a turn or makes a sudden lane change, it experiences a change in yaw. A yaw sensor in the ABS stability control system senses this change to determine if the vehicle is experiencing understeer or oversteer. If the yaw rate indicates a problem, corrective actions are taken to help keep the vehicle under control. "

Transient response is closer to a definition of the vehicles ability to change direction - from side-to-side. Of course - GRIP HELPS!

But...

It IS good to see that the "Cocky Racing Guy" is sporting some serious wood! :D ;)



P.S.
Here's a good link:
http://www.ozebiz.com.au/racetech/theory/yawaxis.html!