2021 STU Discussion
#196
There's a ton of threads on here to help but here's a short cliff's notes from what I've run in the past. Keep in mind, the reasoning your results may vary is truly dependent upon front coilover spring lengths are tire clearance.
18x10 + 35. Perfect square fitment for the evo 8/9 in my opinion. Just needs a roll in the rear and you could legitimately run anywhere from a 255 - 285 mm tire all the way around
18x10.5 +30. Front fits just fine without the need for a spacer. Rear needs a MAJOR pull/roll. If you run the SSB rear trailing arms, there are guys getting away with just a roll with the 18x10.5 + 38. There's another thread in this forum where someone is trying to run an 18x11 (differing offsets) square. Looks like rear trailing arms are required. There's a MASSIVELY long thread about these on this forum.
18x11 +15 fits perfectly up front without a spacer. No way in hell this fits in the rear unless you like a ton of poke. Ran a 295mm A052 - granted there will be rubbing behind the tire most likely, depending upon your castor. I ran this with a 255/10" rear tire/wheel setup this past season.
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TimC909 (Nov 4, 2021)
#197
Evolved Member
That might be also a subject for discussions...I could argue that our DCT transmission is a manual transmission with electronic actuators that could change gears on its own too!
#198
Evolved Member
iTrader: (2)
Originally Posted by MrAWD
That might be also a subject for discussions...I could argue that our DCT transmission is a manual transmission with electronic actuators that could change gears on its own too!
#199
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Join Date: Feb 2014
Location: Samukawa, Japan, now Midwest USA
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O.K., I know this is last year's thread (who's gonna start the 2022??), but my question is related to post #191. I get I can't run a multi-disc clutch (I have an ACT single so no problem). I'm looking to upgrade my brakes, Sooooo, if I want to do some SCCA sanctioned AX, can I run two-piece brake rotors? The Street Touring rules says they can be "Non-standard brake rotors" and "aluminium rotor hats are allowed". Makes me think I'm Gucci.
What's your take?
What's your take?
#200
O.K., I know this is last year's thread (who's gonna start the 2022??), but my question is related to post #191. I get I can't run a multi-disc clutch (I have an ACT single so no problem). I'm looking to upgrade my brakes, Sooooo, if I want to do some SCCA sanctioned AX, can I run two-piece brake rotors? The Street Touring rules says they can be "Non-standard brake rotors" and "aluminium rotor hats are allowed". Makes me think I'm Gucci.
What's your take?
What's your take?
I'm hoping to start up another 2022 thread soon, once the 2022 rules are finalized!
Yes, you're able to run 2-piece - stock diameter rotors for STU. No worries there!
#203
Evolved Member
I am only hoping to hear some good news about multi disc clutches for SST trainy...not sure when though, since the letter was sent couple of months ago
#204
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Thanks for the info about brake upgrades!! I want to be able to start to mostly track the car this year--- don't want to cook the brakes, but don't want to get bumped out of SCCA STU class, if I decide to do one.
LV///R, I enjoy all your tire/wheel combo pics and info. It helps us alot!!!
Did you see the SCCA's, STAC is requesting member feedback about moving the Fiat Sypder from STU to STR?
LV///R, I enjoy all your tire/wheel combo pics and info. It helps us alot!!!
Did you see the SCCA's, STAC is requesting member feedback about moving the Fiat Sypder from STU to STR?
#205
Evolved Member
Thanks for the info about brake upgrades!! I want to be able to start to mostly track the car this year--- don't want to cook the brakes, but don't want to get bumped out of SCCA STU class, if I decide to do one.
LV///R, I enjoy all your tire/wheel combo pics and info. It helps us alot!!!
Did you see the SCCA's, STAC is requesting member feedback about moving the Fiat Sypder from STU to STR?
LV///R, I enjoy all your tire/wheel combo pics and info. It helps us alot!!!
Did you see the SCCA's, STAC is requesting member feedback about moving the Fiat Sypder from STU to STR?
#206
Thanks for the info about brake upgrades!! I want to be able to start to mostly track the car this year--- don't want to cook the brakes, but don't want to get bumped out of SCCA STU class, if I decide to do one.
LV///R, I enjoy all your tire/wheel combo pics and info. It helps us alot!!!
Did you see the SCCA's, STAC is requesting member feedback about moving the Fiat Sypder from STU to STR?
LV///R, I enjoy all your tire/wheel combo pics and info. It helps us alot!!!
Did you see the SCCA's, STAC is requesting member feedback about moving the Fiat Sypder from STU to STR?
Glad to help with the wheel/tire combo pics in this thread. I've gained a lot of knowledge from members on here so I'm happy to contribute as well.
I did see that about the Fiata. I believe there's been a handful of people who wrote in about the classing of the Fiata. IT was discussed further up in this thread as well.
#207
Also, a further, in depth discussion about the possible Fiata switch here: RoadRaceAutox.com
#208
Evolved Member
Thanks for update. My letter didn't make into this one, but it looks like it might be in the next one. Here is what I got for where the letter is right now:
Letter #31607 has been reviewed by the SEB.Your letter is waiting to be posted in the next Fastrack, which will be available on the 20th of this month.
Letter #31607 has been reviewed by the SEB.Your letter is waiting to be posted in the next Fastrack, which will be available on the 20th of this month.
#209
EvoM Guru
iTrader: (10)
edit: 14.6.A
14.6 BRAKES A. Non-standard brake rotors may be used provided they are of equal or larger dimensions (diameter and overall thickness) and made of ferrous material (e.g., iron). The diameter for replacement rotors is measured at the minimum outside dimension. Aluminum rotor hats are allowed. Cars originally equipped with solid (non-vented) rotors may utilize vented rotors. Cross-drilled and/or slotted brake rotors may be fitted provided all such voids are within the disc area and comprise no more than 10% of that area.
Last edited by Butt Dyno; Jan 13, 2022 at 03:07 PM.