ST Wheels and Offset Legality

[Jonathan Lugod]

13.4 WHEELS
Any type wheel may be used provided it complies with the following:
it is the same width and diameter as standard, and as installed
(including wheel spacers if applicable) it does not have an offset
more than +/- 0.25 inch from a standard wheel for the car. The
resultant change in track dimensions is allowed.
Wheel spacers are permitted, provided the resultant combination
complies with the offset requirements of this section. Wheel studs,
lug nuts, and/or bolt length may be changed.
63
Vehicles equipped with rims having metric specifications may use
alternate rims as determined by using the following procedure:
Diameter: converting the metric measurement to inches and using
the nearest smaller inch diameter rim.
Width: converting the metric measurement to inches and using
the nearest smaller 1/2-inch width rim. Offset and track

14.4 Wheels
A. Any wheels are allowed with widths up to the follow:
ST, STS - 7.5"

Thoughts? My interpretation of the rules is that the ST rules are an addition. Therefore the wheel must be 7.5" wide max (ST rule), but the offset must be +-5 from standard size (stock rule)

[Greg Peng]

I read it as saying any wheels with the only restriction being width. Any meaning any brand, style, material, diameter, offset, etc.

For STX (and maybe STU), the 2008 rulebook separately mentioned offset, but the 2009 rulebook now uses the same simplified wheels section for all ST* classes with no mention of offset.

Under your interpretation I think most, if not all, of the popular wheels for an STX WRX would now be illegal.

[Jason Rhoades]

Wheel offset is not restricted in ST.

ST wheel material is somewhat restricted, non-metallic wheels are forbidden.

[Jayson Woodruff]

non-metallic wheels are forbidden.

Where's that? Some 'general' area I assume.

By the same token, any diameter is allowed as well.

Jay W

[Ken Motonishi]

Jonathan,

Can you please explain how you came up with the number +/- 5?

[Jayson Woodruff]

Jonathan,

Can you please explain how you came up with the number +5?

milimeters. Close to 1/4 inch.

Jay W

[Ken Motonishi]

If that's the case then simple arithmetic will tell you that 1 inch= 25.4 mm. Therefore 25.4 divided by 4 equals 6.35 mm, not 5 mm.

[Jonathan Lugod]

If that's the case then simple arithmetic will tell you that 1 inch= 25.4 mm. Therefore 25.4 divided by 4 equals 6.35 mm, not 5 mm.

i just rough-stimated the 1/4 inch deal... sorry for the confusion.

[Jayson Woodruff]

If that's the case then simple arithmetic will tell you that 1 inch= 25.4 mm. Therefore 25.4 divided by 4 equals 6.35 mm, not 5 mm.

Ever try to order a 36.35mm offset?

[Jason Rhoades]

non-metallic wheels are forbidden.

Where's that? Some 'general' area I assume.

By the same token, any diameter is allowed as well.

Jay W

3.3.3.B-11, or page 39 of the 2009 PDF

Even if we were in Bizarro-CCA,
The 7.5" SSR Comps most of the ST Civics use have a 43mm offset, so even with a 1/4" spacer, the resulting combination is still within +/- 1/4" from stock offset (40mm).

[Ken Motonishi]

Emilio is working on some 15x7.5s, 4x100, +40 but won't be ready till June 2009. According to his website they'll be about $200/wheel which is a pretty good deal and the estimated weight is 10.4lbs.

http://www.949racing.com/index.asp?Page ... Category=2" onclick="window.open(this.href);return false;

[Steve Ekstrand]

Emilio is working on some 15x7.5s, 4x100, +40 but won't be ready till June 2009. According to his website they'll be about $200/wheel which is a pretty good deal and the estimated weight is 10.4lbs.

http://www.949racing.com/index.asp?Page ... Category=2" onclick="window.open(this.href);return false;

Declare now, that Emilio is the hero of Street Touring.

[Mako Koiwai]

And Miata's and SST (STS2 also ?) !

http://www.949racing.com/index.asp?Page ... ategory=33

[Ken Motonishi]

If that's the case then simple arithmetic will tell you that 1 inch= 25.4 mm. Therefore 25.4 divided by 4 equals 6.35 mm, not 5 mm.

Ever try to order a 36.35mm offset?

Similar to trying to decide between the 17/32 or 9/16 socket. Heck, maybe the 14 mm works just fine. Trying to use the standard system requires a calculator to decide which size to use. That's why my favorite tool is the hammer. It just doesn't take "no" for an answer.

:mrt:

[John Coffey]

Similar to trying to decide between the 17/32 or 9/16 socket. Heck, maybe the 14 mm works just fine.

Remind me to keep tools away from you at the track...

[Mark Duerst]

[quote="Ken Motonishi"]
That's why my favorite tool is the hammer. It just doesn't take "no" for an answer.

And this Ken is why you are my hero! :king:

[Jason Flores]

Wheel offset is not restricted in ST.

ST wheel material is somewhat restricted, non-metallic wheels are forbidden.

So 14.4 superceeds/replaces 13.4 hence offset of wheel is open as well as the use of spacer?

if yes [/thread] and thank you jason rhoades!!! the legend has spoken!!!

[Steve Ekstrand]

Minor thread diversion....

Anybody have good sources for 4x100 wheel spacers?

[Mako Koiwai]

http://www.optionsauto.com/products.asp?dept=408

Great service ... regular mail is overnight to you ... from Azusa

[Steve Ekstrand]

Same problem I keep running into... Insanely expensive and mostly outrageous sizes.

Where do you get simple thin basic spacers. I have 3mm. I'd like some simple 5mm. Don't need studs and nuts or a Porsche price tag.

[Jason Rhoades]

Wheel offset is not restricted in ST.

ST wheel material is somewhat restricted, non-metallic wheels are forbidden.

So 14.4 superceeds/replaces 13.4 hence offset of wheel is open as well as the use of spacer?

if yes [/thread] and thank you jason rhoades!!! the legend has spoken!!!

Stock class permits use of added/replacement spacers, wheel studs, and lug nuts. Restriction is wheel must have resulting offset +/- 1/4" from stock. You could conceivably use a 25mm spacer and be legal in Stock, as long as your wheel had an offset ~19-~31mm greater than the stock wheel.

ST's "ANY WHEEL" allowance lifts the restriction on offset, diameter, and width, but for the explicit restrictions imposed in ST, STS, and STX.

[Jason Rhoades]

Same problem I keep running into... Insanely expensive and mostly outrageous sizes.

Where do you get simple thin basic spacers. I have 3mm. I'd like some simple 5mm. Don't need studs and nuts or a Porsche price tag.

Steve, Summit Racing has 1/8" and 1/4" universal spacers for <$7/ea.

[Jonathan Lugod]

Same problem I keep running into... Insanely expensive and mostly outrageous sizes.

Where do you get simple thin basic spacers. I have 3mm. I'd like some simple 5mm. Don't need studs and nuts or a Porsche price tag.

Steve, Summit Racing has 1/8" and 1/4" universal spacers for <$7/ea.

i got mine from pep boys for the same price range...

[Steve Ekstrand]

Steve, Summit Racing has 1/8" and 1/4" universal spacers for <$7/ea.

I might have some then.... Pretty sure I have some for each from Summit. Just they are sitting in the Barracuda Tire and Wheel section, not the Honduh wing. Was thinking they wouldn't work with 4 lug baby patterns. Will check... Thanks!!!

[Jason Flores]

Same problem I keep running into... Insanely expensive and mostly outrageous sizes.

Where do you get simple thin basic spacers. I have 3mm. I'd like some simple 5mm. Don't need studs and nuts or a Porsche price tag.

CALL
JLB Motorsports
505 North Smith Avenue
Suite 107
Corona, CA 92880

By telephone:
Monday to Saturday from 10 AM to 6 PM : (951) 734-4411

By e-mail : info@jlbmotorsports.com

By AIM : JLBSupport or JLB Motorsports


They have them in stock now and have honda specific ones at 3mm and 5mm, they also have longer studs....they are also well informed about the ST class and If you tell them you LOVE bridgestones he will give you my special pricing... JK