Can I use 14 inch wheels in H stock AutoX?

[kwkshft]

Well, a set of used Hankook Ventus Z214 C71 just rolled into my garage 205/55X14. Wondering if I can use these in H Stock AutoX. My 2009 hatch has TRD rear sway bar and TRD exhaust, that's it. If so, what width and offset is permissible? Thanks.

[justjesus]

only the stock width is allowed.
offset has to be within + or - of 1/4" from stock

[Steve35]

here is the wheel rule on page 75 of the 2013 Solo rule book

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 ±¼”
(±6.35mm) from a standard wheel for the car. The resultant change in
track dimensions is allowed. Tire pressure monitoring sensors may be
removed.
Wheel spacers are permitted, provided the resultant combination complies
with the offset requirements of this section. Wheel studs, lug nuts,
valve stems (including pressure-relief types), and/or bolt length may be
changed.
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 ½” (12.7mm) width rim. Offset and track must still
comply with the requirements of this section.

[CrankyOldMan]

This is probably the best resource for determining what puts you in which class. Keep in mind that these rules are generally only enforced at the regional/national level, and your local events may choose to forgo them.

http://scca.cdn.racersites.com/prod/...lo%20Rules.pdf

Which means using those wheels puts you in at least STF.

[racerb]

Originally Posted by kwkshft

Well, a set of used Hankook Ventus Z214 C71 just rolled into my garage 205/55X14. Wondering if I can use these in H Stock AutoX. My 2009 hatch has TRD rear sway bar and TRD exhaust, that's it. If so, what width and offset is permissible? Thanks.

What size wheels did your car come with stock? Most tire dealers list a 14" or 15" wheel as standard equipment, so the standard 14" steelies would be fine! If your just running with your local club, something like these from Discount Tire Direct will work for Stock Class....http://www.discounttiredirect.com/di...5.5&vid=015624

racerb

[kwkshft]

Thanks for the info guys! So it looks like 14X5.5 with +30 to +40 offset will work. Any recommendations on tire pressures?

[Steve35]

Originally Posted by kwkshft

Thanks for the info guys! So it looks like 14X5.5 with +30 to +40 offset will work. Any recommendations on tire pressures?

I'd start in the high 30's, say 38 front and rear and adjust from there.

see this link from Tire Rack

http://www.tirerack.com/tires/tirete....jsp?techid=58

good luck and enjoy the extra grip!

Steve

[justjesus]

Originally Posted by kwkshft

Thanks for the info guys! So it looks like 14X5.5 with +30 to +40 offset will work. Any recommendations on tire pressures?

the guys over in HS here run higher than 40 on Hooziers. One dude ran even higher in the rear, about 50+ if I'm not mistaken.

I put higher pressure in Garm's rear tires (higher than what he normally runs), and coached him a tad, and he dropped a good amount in some autoX runs. Total of almost 2 seconds on sub 50 sec course.

[thebarber]

Mmm, 14" r-comps on stock steelies

[racerb]

Be very careful on R-Compound tires with stock struts and shocks, these tire grip so well they can create bicycling on tighter auto-x courses. Work up to your limits until you are ready for suspension upgrades and you will be much happier in the long run. Also a very good way of checking for proper tire pressure is to put a couple 1"-2" long lines of white shoe polish on the tire shoulders. It's very easy, if your scrubbing the entire line off, then up your pressure, if your not even touching these lines, lower your pressure, it's that simple. Oh and some crash bolts for negative camber in the front suspension from Micro Image, will be a huge improvement!

racerb

[justjesus]

hehe

i like that red car with the r comps!

[kwkshft]

Originally Posted by racerb

Be very careful on R-Compound tires with stock struts and shocks, these tire grip so well they can create bicycling on tighter auto-x courses. Work up to your limits until you are ready for suspension upgrades and you will be much happier in the long run. Also a very good way of checking for proper tire pressure is to put a couple 1"-2" long lines of white shoe polish on the tire shoulders. It's very easy, if your scrubbing the entire line off, then up your pressure, if your not even touching these lines, lower your pressure, it's that simple. Oh and some crash bolts for negative camber in the front suspension from Micro Image, will be a huge improvement!

racerb

Can you explain what you mean by bicycling? Thanks

[justjesus]

im guessing he means TWO wheel action

[cali yaris]

bicycling = 2 wheels

[cali yaris]

im guessing he means TWO wheel action

I love it when you talk dirty.

[racerb]

Yeah I have seen it on several occassions where cars would actually get up on two wheels due to higher grip than suspension could handle. There are lots of videos of it on Youtube, check it out to see what I mean!

Here is one example...http://www.youtube.com/watch?v=A0hTl78eaI8

racerb

[markitect]

If you need more wheels rolling into your grarage I have stock steel wheels with 205/50-15 falken azenis 615's on them. I was planning on getting them out to measure tread to post up to sell.

[thebarber]