Car Shows, Events, and Racing Announcements, discussions, news reports, and pictures for Car Shows, Race Events, Media Events, and Group Drive Events. Please post Event Location in the Thread Title since this is an International Forum!

Tires for stock-class auto-x...?

Thread Tools
 
Search this Thread
 
  #21  
Old 11-23-2007 | 02:48 AM
mrFroge's Avatar
Member
5 Year Member
Joined: May 2007
Posts: 94
From: Patterson, CA
Exclamation Scca Solo "stock class" wheel rules

Here is the Scca stock wheel rule:

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 < about +/- 6mm> 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.

"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 must
still comply with the requirements of this section."

The Honda parts manual lists the standard fir wheel as a 14x5 inch (no mention as to offset). The Sport fit wheel is listed as a 15x6 and as we all know has a 55mm offset.

I measured the stock Fit Sport wheel to weigh 42.0 pounds with a 23# Avon tire mounted. So they weigh 19# once you do the math..
 
  #22  
Old 11-23-2007 | 04:55 AM
MINI-Fit's Avatar
Member
5 Year Member
iTrader: (2)
Joined: Sep 2006
Posts: 1,105
From: Mililani, Hawaii
Originally Posted by fitless
Hey, MINI-Fit, I was hoping you'd chime in some time. Thanks for the guidance on all those brands - it's nice to have so many choices for our tiny tires. Any input on whether the larger sizes like 215's or 225's are of any benefit? How about staggering the tires larger front/smaller rear? Seems like a camber-challenged car might benefit from more rubber up front even if they're not prone to going up in smoke when we punch it off the turns...

If a 205/50 or 195/50 is the magic size, that's great, but since the tire budget is going to be pretty stinkin' tight for a few years, I'd hate to leave something on the table when I purchase my dedicated "fun" tires.
OEM Sport tires are: 195/55-15 = 23.44 inches in diameter
OEM Base tires are: 175/65-14 = 22.95 inches in diameter
(this fits rims 5-6" wide)

This thread is about stock class autocross which means rims are limited to-

14x5.5" for the base Fit (as far as I can determine)
see
2008 Honda Fit - Details, Features, Specifications, Warranty
I did search as much as I could to see if there was a listing for the stock fit wheel to be 14x5 but I could not find any.
Honda does make steel rims for the older civic in both 14x5 and 14x5.5"

For wider tires-
In Kumho Ecsta V710:
195/55-14 fits rims 5.5-7" wide, 22.2" tire diameter
In Hoosier A6 and Kumho V710:
205/55-14 fits rims 5.5-7.5" wide, 22.7" tire diameter
225/50-14 fits rims 6-8" wide, 22.8" tire diameter

So for the 5 or 5.5" wide rim 225 is a bit too wide for a perfect fit. It is possible to force fit a wider tire on a narrow rim but that would make the tire tread more narrow after mounting than would be optimal and clearance might be an issue. Sizes in 215mm wide tires for 14" are not readily available for tires that would be good for autocrossing.

For 15x6" rims
In Kumho V710:
225/50-15 fits rims 6-8" wide, 23.7" tire diameter (taller than stock- would likely rub or risk rubbing since taller and wider than stock tires.
In Hoosier A6:
225/45-15 fits rims 7-9" wide, 22.8" tire diameter
275/35-15 fits rims 9-11" wide, 23" tire diameter (too wide for stock rim)
I think these are wider and stock sized diameter or larger so more risk for rubbing. 9" wide rims wouldn't fit easily.

Part of the problem is you can't change negative camber that much in stock classes legally. You have to use nearly stock offset for the wheels and you don't have many sizes to choose from that will give you a smaller tire diameter whether in 14" or 15". (not quite as bad with 14" sizes)

Staggering sizes is possible as long as you can minimize rubbing in the fronts and rears. Generally it's best to have same sized tires front and rear but the aggressive driver might be able to adjust and handle more rubber in the front. Realize that more rubber means more weight and the Fit doesn't have that much extra power.

For most autocross drivers in stock class a good place to start would be-
195/55-14 for the base fit
and
205/50-15 for the Fit Sport

If there are other older Honda civic drivers in your area you can ask to try on a 4x100 14" wheel with a wider 225mm tire and see how it agrees with your Fit and report back to us.
 
  #23  
Old 11-23-2007 | 06:54 PM
Skimmer's Avatar
Member
iTrader: (2)
Joined: Sep 2007
Posts: 236
From: Sacto, CA
Originally Posted by fitless
Hey, Skimmer,
I was wondering if you had found any better deals on wheels since the last time that topic came up. Ditto on the R-A's, but I just can't spring for stickies without a set of wheels to put them on, and I can't really justify pulling my Dunlops when they've only got 1200 miles on them... wife unit is tolerant, but not THAT tolerant...
I have not. I ended up finding a set of used Enkei RS5 wheels in 16x7 for only $120 on Craigslist, and I bought a set of Yoko HS4 tires in 205/45/16 during a $100-off special on tires.com. In the end, I'll be out only about $100 per corner. This will be my street setup. The tires are the same size that comes with the factory 16" wheel option. The wheel width and offset (40mm) will be pushing the wheel-well capacity a bit, but most people report few problems. The wheels were badly curbed when I bought them, but I painted them dark grey metallic and now they look pretty good. I'll post a pic when they're mounted on the car.

So I'll be using the stock Sport wheels for auto-x. I will probably sell the stock Dunlops to subsidize race tires (I know about wife tolerance issues too! )

My hope is that, within a year, SOMEBODY will come out with lightweight wheels for the Fit that satisfy the auto-x rules, and I can save my lunch money for those before Season 2 in the Fit.

You probably know there are various custom wheel makers who can do what we want (i.e. Kodiak and others). But my pockets aren't that deep. I need something under $150 per wheel unless a sponsor comes knocking.

PS -- Your Valiant is sweet. So clean!
 
  #24  
Old 11-23-2007 | 09:41 PM
MINI-Fit's Avatar
Member
5 Year Member
iTrader: (2)
Joined: Sep 2006
Posts: 1,105
From: Mililani, Hawaii
Originally Posted by mrFroge
Here is the Scca stock wheel rule:

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 < about +/- 6mm> 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.

"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 must
still comply with the requirements of this section."

The Honda parts manual lists the standard fir wheel as a 14x5 inch (no mention as to offset). The Sport fit wheel is listed as a 15x6 and as we all know has a 55mm offset.

I measured the stock Fit Sport wheel to weigh 42.0 pounds with a 23# Avon tire mounted. So they weigh 19# once you do the math..
I just came back from my Honda dealership parts dept and asked for them to look up the base Fit standard wheels. They show it is 14x5.5" steel wheel.

I hope the Fit sport 15" alloy wheel is less than 19 lbs. To be accurate you need the rim alone no tire since tire weights are usually based on the manufacturer's estimate and I have found it is not always accurate. If you know where you can find a new Avon tire in the same size and can weigh it on the same scale then you can subtract the difference.

As for alternate wheels to the OEM ones (with reasonable prices)

For the base Fit (at Tirerack.com)
14x5.5" +43mm offset
Rial Campo (made in Germany) $78 each 14.2 lbs Silver finish
Low pressure Cast Alloy (like O.Z. wheels), 5 yr finish warranty


For the Fit Sport 15x6"
Sport Edition D4 $59 each (closeout) +50mm offset, 14 lbs
Silver finish, made in China, 1 yr warranty, 1 pc cast alloy


Sport Edition E3
$84 each (closeout) +45mm offset, 15.6 lbs
Bright Satin Silver painted, made in Japan, 1 yr warranty, 1 pc cast alloy


For anyone that is running in non stock classes then you can choose other wheel sizes:
16x7" and 215/40-16
or up through 17x7 using 205/40-17 tires.

In Street Touring S class
Street tires with treadwear rating 140 or higher, No R compound tires
Any rims up to 7.5" wide

In F Street Prepared class
Any R compound or Street tires (no racing slicks)
Any rim diameter or width
 

Last edited by MINI-Fit; 11-23-2007 at 09:52 PM.
  #25  
Old 11-24-2007 | 07:46 PM
mrFroge's Avatar
Member
5 Year Member
Joined: May 2007
Posts: 94
From: Patterson, CA
TireRack's Sport Edition D4 $59 each (closeout) +50mm offsetSport Edition D4 $59 each +50mm offset is no longer available. Too bad, as that wasn't a bad tire for H-Stock.
 
  #26  
Old 11-25-2007 | 12:04 AM
HEMI-Fit's Avatar
Thread Starter
|
Member
5 Year Member
Joined: Oct 2007
Posts: 266
From: DFW, TX
Well, that was a good deal... hopefully there will be more that come on line down the road. I just hope the 09 redesign Fit will keep a super-high offset wheel, too.

Looks like my Plan A will be to run some form of R-comp in a 205/50 on my stock Sport wheels. I sure can't see how they're 19# - my Valiant's 17x8 Cobra wheels are in the 23-24# range and they're no lightweights.

BTW, thanks for the compliment, Skimmer... clean is the name of the game with my Valiant, and with my Fit, too. I'm a function over form kind of guy, an you can't see what's going on with my Valiant until you start to look really closely at things. I want my Fit to be the same way in a day-to-day setting, but still stay within the HS rules. This will be a different kind of challenge, for sure.
 
  #27  
Old 11-25-2007 | 01:25 AM
MINI-Fit's Avatar
Member
5 Year Member
iTrader: (2)
Joined: Sep 2006
Posts: 1,105
From: Mililani, Hawaii
How do we have to deal with TPMS?

From Lexus on their TPMS sensors (taken from info on Ebay site selling the sensors)
The system may not operate properly if:
  • Tires not equipped with tire pressure warning valves and transmitters
  • The correct ID code is not registered in the tire pressure warning ECU
  • Electric devices or facilities using similar radio wave frequencies are nearby
  • A radio set at similar frequencies is used in the vehicle
  • A window tint that affects the radio wave signal is installed
  • There’s an excess of snow or ice on the vehicle, particularly around the wheels or wheel housings
  • Non-genuine Lexus wheels are used
  • The tire pressure warning valve and transmitter battery is depleted
  • Tire pressure is extremely high (72 psi or more)
  • Using snow tires or snow chains

Do we add sensors to each race rim? About $340 for a set of 4 and they have been known to break with tire changes.

Use any rim and then the TPMS light will go on and then what? How do we turn the light off? Ok can we use an OBDII reader and clear the code and the light?

(a few models can be turned off using NAV screen on the dash but most cars have no reset, fuses don't work and battery disconnect doesn't work)

Anybody know or can find out?? (check TSB for your own car or dealership- few Tech Service Bulletins are out yet- too early)

Sport Edition D4 $59 each (closeout) +50mm offset, 14 lbs
Silver finish, made in China, 1 yr warranty, 1 pc cast alloy

If there are no more then as a closeout we might not see it again, too bad, that was a good alternative to sport Fit wheels and lighter too.

(I have a call in to Tirerack to check on this rim).
 

Last edited by MINI-Fit; 11-26-2007 at 01:06 PM. Reason: Edited comments in parenthesis
  #28  
Old 11-26-2007 | 02:26 PM
Skimmer's Avatar
Member
iTrader: (2)
Joined: Sep 2007
Posts: 236
From: Sacto, CA
Of the wheels you listed, the Sport Edition D4 is the only one that seems to satisfy the rules. It might be available from other vendors if Tire Rack is out.
 
  #29  
Old 11-26-2007 | 03:21 PM
MINI-Fit's Avatar
Member
5 Year Member
iTrader: (2)
Joined: Sep 2006
Posts: 1,105
From: Mililani, Hawaii
Originally Posted by Skimmer
Of the wheels you listed, the Sport Edition D4 is the only one that seems to satisfy the rules. It might be available from other vendors if Tire Rack is out.
Correct, Sport Edition D4 is best.
I did check other vendors and it's about $120 to $130 each and no sign that it is discontinued.

The other option is just get stock 15" extra wheels from Honda.
 
  #30  
Old 11-26-2007 | 10:14 PM
HEMI-Fit's Avatar
Thread Starter
|
Member
5 Year Member
Joined: Oct 2007
Posts: 266
From: DFW, TX
Makes you wonder why it was discontinued... I wonder if our TireRack guy would have some insight? Hopefully it was slow sales rather than quality issues. Probably had too much lead in the paint...
 
  #31  
Old 11-27-2007 | 08:53 PM
MINI-Fit's Avatar
Member
5 Year Member
iTrader: (2)
Joined: Sep 2006
Posts: 1,105
From: Mililani, Hawaii
Originally Posted by HEMI-Fit
Makes you wonder why it was discontinued... I wonder if our TireRack guy would have some insight? Hopefully it was slow sales rather than quality issues. Probably had too much lead in the paint...
I did find out that Sport Edition D4 15x6 +50mm offset is still in stock but it is closeout and the +38 version is already out. $59 each is good price for 14 lbs weight- less than stock.

Not sure about the reason for closeout. Likely the profit margin is not enough given lower demand for this wheel and low prices.
 
  #32  
Old 11-28-2007 | 03:00 PM
Skimmer's Avatar
Member
iTrader: (2)
Joined: Sep 2007
Posts: 236
From: Sacto, CA
Below is a pic of my car with the new street tire/wheel setup. Again, these are Enkei RS5 wheels, 16x7, 40mm offset. The tires are Yokohama HS4 205/45/16.

No rubbing issues so far, but then I haven't driven it yet with my wife, two dogs and a load of groceries in the car (like usual). I also haven't done any major handling tests yet, but in fast city-driving corners, the grip seems way better than the stock setup, and the ride quality is just as good. Anyway, I love the look. Because the Fit has no chrome, I think it's a car that looks great with dark wheels.

So the stock Sport wheels are dismounted now. If I like the overall handling of the new street tires, I will sell the stock Bridgestones and get racing tires mounted on the Sport wheels for auto-x when the budget allows.

 
  #33  
Old 11-28-2007 | 11:44 PM
HEMI-Fit's Avatar
Thread Starter
|
Member
5 Year Member
Joined: Oct 2007
Posts: 266
From: DFW, TX
Looks great! I'm still waffling on what I want for a street setup... 16's and 17's sure seem plentiful, but I need to keep some sidewall for the lousy streets around here. Of course if I find a great deal like that, all bets might be off. I'm interested to hear how a 7" wheel and 40mm offset work together.
 
  #34  
Old 11-29-2007 | 09:51 PM
Skimmer's Avatar
Member
iTrader: (2)
Joined: Sep 2007
Posts: 236
From: Sacto, CA
Originally Posted by HEMI-Fit
Looks great! I'm still waffling on what I want for a street setup... 16's and 17's sure seem plentiful, but I need to keep some sidewall for the lousy streets around here. Of course if I find a great deal like that, all bets might be off. I'm interested to hear how a 7" wheel and 40mm offset work together.
Thanks! So far it's working great. The ride quality hasn't suffered, and I didn't want to go bigger or lower-profile because of the same pothole issue you state. I just don't think 17s are practical for the street on a car of this size, and a 40mm offset is probably the max for what will work on this car.
 
  #35  
Old 12-06-2007 | 06:59 PM
Skimmer's Avatar
Member
iTrader: (2)
Joined: Sep 2007
Posts: 236
From: Sacto, CA
Update: I've had some rubbing on the rear tires when carrying my two dogs in the back of the car. Over bumps, the outside edge of the tires scrapes the fender lip. So I used a 3" diameter iron pipe section to roll the lip back a little. I also used a file to shave off the plastic clip just above the tire that attaches the front edge of the rear bumper to the rear fender. This seems to have fixed the issue for now.
 
  #36  
Old 12-06-2007 | 10:49 PM
HEMI-Fit's Avatar
Thread Starter
|
Member
5 Year Member
Joined: Oct 2007
Posts: 266
From: DFW, TX
Originally Posted by Skimmer
Update: I've had some rubbing on the rear tires when carrying my two dogs in the back of the car. Over bumps, the outside edge of the tires scrapes the fender lip. So I used a 3" diameter iron pipe section to roll the lip back a little. I also used a file to shave off the plastic clip just above the tire that attaches the front edge of the rear bumper to the rear fender. This seems to have fixed the issue for now.
That plastic clip seems positively evil from a wheel/tire fitment standpoint. It's like they didn't WANT us to have big wheels/tires on our little econoboxes...
 
  #37  
Old 12-07-2007 | 04:35 PM
Skimmer's Avatar
Member
iTrader: (2)
Joined: Sep 2007
Posts: 236
From: Sacto, CA
Agreed. I figure someday I'll remove the rear bumper cover and find a new way to mount it that eliminates that plastic clip and the screw that goes with it. But for now, yes, it's evil.
 
  #38  
Old 12-08-2007 | 04:02 AM
mrFroge's Avatar
Member
5 Year Member
Joined: May 2007
Posts: 94
From: Patterson, CA
Thumbs up 205/50/15

Well, I'll be completing my first year running in SCCA H-Stock this Sunday. I had a problem finding anything other than 205-50-15's that will work with the 15X6 wheels and that meet the stock requirements. For most of the year I ran AVON tires in dry conditions, while using Bridgestones for wet days and "street tire" classes.

The Avon "tyres" have a very strong side wall and are very sticky. I feel their draw back is the 23# they weigh. This is caused by the steel reinforced construction but puts them at 5# more than KUHMO and some other good brands. But, they are a good buy if purchased on close-out from Tire Rack.

I've settled on the Tire Rack Sport Edition D4 $59 each (closeout) +50mm offset, 14.5 lbs for my rim of choice for H-Stock. Other new wheels I've located run $1000+ for a set of four. Way out of my price range for this class.

I'm planning to begin the 2008 season on KUHMO's to reduce the weight by 5# per wheel.

My off-track tires are KUHMO sport 205x50x15's mounted on light-weight 7" wide rims. I wouldn't recommend running any wider tire on a Fit 15" wheel.
 
  #39  
Old 12-08-2007 | 08:57 PM
MINI-Fit's Avatar
Member
5 Year Member
iTrader: (2)
Joined: Sep 2006
Posts: 1,105
From: Mililani, Hawaii
Originally Posted by mrFroge
Well, I'll be completing my first year running in SCCA H-Stock this Sunday. I had a problem finding anything other than 205-50-15's that will work with the 15X6 wheels and that meet the stock requirements. For most of the year I ran AVON tires in dry conditions, while using Bridgestones for wet days and "street tire" classes.

The Avon "tyres" have a very strong side wall and are very sticky. I feel their draw back is the 23# they weigh. This is caused by the steel reinforced construction but puts them at 5# more than KUHMO and some other good brands. But, they are a good buy if purchased on close-out from Tire Rack.

I've settled on the Tire Rack Sport Edition D4 $59 each (closeout) +50mm offset, 14.5 lbs for my rim of choice for H-Stock. Other new wheels I've located run $1000+ for a set of four. Way out of my price range for this class.

I'm planning to begin the 2008 season on KUHMO's to reduce the weight by 5# per wheel.

My off-track tires are KUHMO sport 205x50x15's mounted on light-weight 7" wide rims. I wouldn't recommend running any wider tire on a Fit 15" wheel.
Goodluck with your events.

The Tirerack Sport Edition D4 with +50 offset is sold out and not coming back, they have only +38mm offset left and only 3 last time I checked.
These wheels are made by Kosei and the price is going up so Tirerack decided not to carry them. If you check country of origin the Sport Edition wheels vary.

Your 15x7 wheels have what offset? Which wheel? Any rubbing with that setup?
 
  #40  
Old 12-10-2007 | 01:42 PM
mrFroge's Avatar
Member
5 Year Member
Joined: May 2007
Posts: 94
From: Patterson, CA
Well I guess I just got the last set of 50 offsets out of Indiana.

My !5x7 wheels are Kosei R1-Racing, that have a 38mm offset and 8+ lb weight. Nice cast aluminum wheel.

For the record my Avon tires did not make the complete SOLO season here in California. I installed them after the first five events of the season; but one started to separate on my last event (12-9-07). Fortunately it held together long enough to allowed me to finish 3rd (H-Stock) at the event. This allowed me to finish the series in 1st place by 70 points and bag the trophy..
 



All times are GMT -4. The time now is 11:37 AM.