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8 Replies and 1949 Views What defines a fender?  1949  8 Started by  the3lracer A member of my region is asking questions about modification of his 1990 Miata for SSM. One of his questions is regarding how much he can legally modify the fenders (specifically the fronts) while still being legal. This has sparked a mild debate between the two of us in regards to what legally defines a fender. 16.1.I of the SM rules governs a majority of the bodywork (including the bodywork in question) for the SM classes, but it only states that it may be 'modified or replaced'. His pseudo-rh...
8 1949
by  retlawjJump to last post
27 Mar 2014 08:41 AM
3 Replies and 1580 Views Rival or ZII on 18x9' rim  1580  3 Started by  Mike Sheppard I autocross a Subaru Forester xt with about 370whp. I have 18'x9' rims and was going to get Direzza ZII in a 255 series but the load rating is to low. so what do you think would be the better option  for fit and performance between the BFG Rival in 275/35 or the Direzza in 265/35 both were measured on 9.5' rims on TireRack,s spec sheet and both list 9' as smallest rim width. Our course is on asphalt. 
3 1580
by  MrAWDJump to last post
24 Mar 2014 10:38 AM
6 Replies and 2907 Views New Z28 A street ?  2907  6 Started by  David Lehman Did I read the fast track right Is the new Z28 in A Street It says something about a 1LE, but then I see the Z28 mentioned Thanks, Dr. Lehman
6 2907
by  David LehmanJump to last post
16 Mar 2014 12:40 AM
25 Replies and 8330 Views Best tires for BRZ in c-street  8330  25 Started by  brianL
(Topic has multiple pages1 2 )
Hi I'm newer to the sport and I made the decision to Modify and run my car in C-Street. I think it's a great class for my driving skill. I was going to run the car in c-stock but I really wanted to upgrade my wheels and go up 1 inch in wheel size. So what I want to know is what are the best tires for c-street What are you guys and gals running
25 8330
by  mballJump to last post
11 Mar 2014 09:05 AM
1 Replies and 1223 Views Old RS3s build dates...  1223  1 Started by  MrAWD Just talked to guys at Tire Rack and they seem to have at least 4 tires in my size and they are they are saying the build date is march of 2012, which makes them 2 years old. Is that what was the date for all of those tires for the last two years   Fedja  
1 1223
by  BigEnosJump to last post
08 Mar 2014 02:55 PM
5 Replies and 1524 Views Soft pax index for SSM  1524  5 Started by  trophystock Sold my MR2 spyder and pickup up a S2000.  I ran my MR2 in stock class but want to have a little more freedom with the Honda so looked at either STR or SSM,  Most of the time it will see action in the local car club in the pax indexed class but wondered the difference in the STR and SSM index.  SSM actually has a softer index then STR, seems like that is backwards.
5 1524
by  drdisqueJump to last post
07 Mar 2014 04:57 PM
26 Replies and 5294 Views 2014 Contingency Programs  5294  26 Started by  Z3papa
(Topic has multiple pages1 2 )
What is everyone's thoughts relative to the contingency, or lack thereof, for street tires this year  It seems BFG and maybe Hankook may have some skin in the game, but no Dunlop or other competitive tires out there.  Given the problems experienced at Lincoln, this is unfortunate. 
26 5294
by  gary pJump to last post
04 Mar 2014 10:18 AM
12 Replies and 3133 Views SMF 15 Wheel setup  3133  12 Started by  autocrossaddict Going all in on my R58 Mini SMF build so I'm trying to sort out the 15' wheel setup for a FWD car.  I know 15x10 up front so I can get 275s on, but what about the rear 10x9 10x8 How much narrower of a tire 255s Thanks for any advice!
12 3133
by  autocrossaddictJump to last post
03 Mar 2014 10:13 AM
3 Replies and 1438 Views Why no Tercel in ST?  1438  3 Started by  karloz (OK, flame suit on for asking about a Tercel)  I noticed this car isn't allowed in any of the ST classes and goes straight  from HS to FSP. Looking at its power to weight ratio and suspension type, it seems like it would be a good fit for STF (pretty similar to the Mazda2). Reason I ask is cuz I was looking for a light weight car that was FWD, easy to work on, cheap to buy and fix, reliable, and that wasn't a honda cuz they get stolen quite a bit here in S.FLA.  But then I see th...
3 1438
by  karlozJump to last post
18 Feb 2014 12:23 AM
7 Replies and 2831 Views Big 200 TW tires.... 345 or 355 -18 or 19?  2831  7 Started by  cbramey There are so many growing options (finally) for Street tire racing, in SCCA and elsewhere that it is very exciting.   But, one glaring need is a tire with a bit of sidewall and meat on it.    So many good street cars want 345 or 355 series 18 or 19 inch tires, but no one that i can find is making one.  The rival would be perfect, but their 335 is a good front, a bit small for the rear.  Anyone know if any of the companies are working on it   I need to ...
7 2831
by  btwyxJump to last post
15 Feb 2014 05:21 PM
2 Replies and 1902 Views Street Mod Door Cutting Clarification  1902  2 Started by  subydude I'm asking here because I haven't gotten responses from my last few questions I asked of the techscca account. I'm cutting the fenders for tire clearance on a 4 door Subaru and I've gotten to the point on the rear where the door is the limiting factor.  I can go further before getting close to the door seal (which is where I'd stop), but to go further I'll need to clearance a small section of the door itself.  Reading the rules I don't see anything expressly prohibiting cutting o...
2 1902
by  subydudeJump to last post
22 Jan 2014 07:39 PM
4 Replies and 1677 Views Engine swap between trim levels  1677  4 Started by  AdamH Hi Everyone, First let me say I have searched this forum as well as many google searches but I can't seem to find anyone with this exact situation with an answer.   I have a 1991 Honda Prelude that I would like to run in STC.  The '91 came in two trim levels, the 2.0Si and the Si.  The 2.0Si had the B20A5 engine and the Si had the B21A1 engine in it.  My car is an Si, so it originally would have the B21A1, however the previous owner put a B20A5 in it.  I am trying to ...
4 1677
by  AdamHJump to last post
11 Jan 2014 11:00 PM
24 Replies and 5089 Views For STX, 15x9 w/225 tire or 17x8 with 245 tire?   5089  24 Started by  OasisTan
(Topic has multiple pages1 2 )
Which direction would be preferable for the following scenario that I have contemplated over the years......  the choices will be 15x9 on a 225/45/15 or a 17x7.5 or 17x8 with a 245/40/17..... Funny thing is that the different wheel size would require a different model due to brake clearance.  Car options - Mini Cooper S(with JCW Tuning kit, smaller brakes that allow for 15' wheels) vs Mini Cooper JCW(full model that comes with the Big Brakes) - OS GIKEN diff for front grip. &nbs...
24 5089
by  Built-By-BonesJump to last post
13 Dec 2013 11:56 AM
9 Replies and 3366 Views Which of ST (new Street as well) tires handles heat the best?  3366  9 Started by  MrAWD I have been looking for what is out there to try for the next year and it looks like size wise 275/35/18 might be the size to fit onto the 8.5' rims. But, my car is quite heavy (last measurement brought 3445 lb on the scale), so heat management is very important for good performance of the selected tire. Typical players that I can see right now point to Hankook R-S3, Dunlop Direzza ZII, BFG Rivals, and some other like Bridgestone R11, Kumho Ecsta XS, whatever Toyo will bring to match requirement...
9 3366
by  Han SoloJump to last post
01 Dec 2013 06:18 PM
5 Replies and 1705 Views New Stock to Street Class designations  1705  5 Started by  Han Solo Will the new street class designations add ST after the class letter I figure since they have the STxx classes the new stock to street classes will need to be something like AST, BST, etc. Since the first year they are keeping stock and street classes.
5 1705
by  Han SoloJump to last post
25 Nov 2013 06:11 PM
9 Replies and 2077 Views Why no ST class for SS cars?  2077  9 Started by  djm1968 Subject pretty much sums it up:  why is there no ST class for Super Stock cars  Seems the natural progression should be: Stock =>  ST => ASP.  I'd like to perform a few mods to my '12 Porsche  Cayman, but I do not want to land in ASP and on R-DOTs.  Next years new 'Street' eliminates the R tire need, but my car is camber challenged -- camber plates bump me right up into ASP. Cheers, DJM
9 2077
by  edfishjrJump to last post
25 Nov 2013 02:47 PM
9 Replies and 2603 Views Dunlop ZII pressures  2603  9 Started by  Cito I am running 275/35/19 ZII's on a 3500 pound Mustang.  It is in RTR, but I thought I would post here given the street tire knowledge in this section of the forums.  Anyway, I am wondering what sort of pressures people are running in the ZII's if anybody else is running them.  I went with 40f and 38r with what seemed liked mixed results.  Any thoughts would be appreciated.   Thanks, Brent
9 2603
by  47CPJump to last post
25 Nov 2013 11:08 AM
94 Replies and 16692 Views STF 2013 plans and setup and such...  16692  94 Started by  davebs14
(Topic has multiple pages1 2 3 ... 4 )
Another year polishing our turds...what have we all done...what are we doing setup wise Still have the 2011 mini with the following: - 15x7.5 konig wheels (roller or litespeeed wheels) with the 225 hankooks - filter on a stick with a rear muffler delete from the HS days - bilstein sports with swift springs, vorshlag camber plates and hotchkis race rear bar WISH LIST: - race seats - replacement header, cat and exhaust - ECU reflash - lightweight battery and other lighter odds and e...
94 16692
by  xnamerxxJump to last post
21 Nov 2013 04:33 PM
25 Replies and 5065 Views Cobalts and Boost-Rule Clarification  5065  25 Started by  Evolve
(Topic has multiple pages1 2 )
A local competitor and I have been arguing about his Cobalt SS and boost.  No protest will come about, mainly we're just curious about what would really be legal in an STX tune.  We've found that the stock boost levels in a cobalt learn down to maintain 260hp, so they'll vary from 10 to 22 psi.  The rules state '...no changes to standard boost levels, intercoolers, or boost controls are permitted. Boost changes indirectly resulting from allowed modifications are permissible but di...
25 5065
by  mraznyJump to last post
20 Nov 2013 02:44 PM
13 Replies and 7316 Views H Street car definitions for 2014 supplemental class  7316  13 Started by  bluesight HS and GS have been combined into an G Street class for 2014 leaving H Stock drivers in the cold. Regional and local AX clubs may still want to run a separate H Street class to bring in new drivers and help keep current Road Tire HS drivers. This topic offers a place to help define the cars that may be included in H Street regionally and locally. It is based on the 2013 HS class with a significant modification, moving the HS mini out to allow them to compete in GS. New cars can be added as they ...
13 7316
by  IanFJump to last post
10 Oct 2013 10:38 PM
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