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I see that the new 2017 SCCA autocross rules now allow the Lotus Elise, Exige, Exige S, and Exige SC in the super street class!
So my question is, which specific model and year and options are going to be the most ideal for an autocross only car for the SS class?
 

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Turns out that was a mistake per the March Fastrack and SC cars are still excluded.

I think there is still a good chance they will end up in SS in 2018, but I wouldn't go buying a particular car yet. If the class listing stays the same as in the book now an $260 would be ideal, $240 below that. Elise SC has the narrower front wheel than the NA Elise, so I would imagine that would be more handicap than the power difference. Certainly would be fun, but I don't know if I can justify the $$ the SC cars are now getting.

#21312 2017 Lotus Classing
Thank you for pointing out this error in the draft rule book on the SCCA website. The
proposal #20242 (see the November Fastrack) to move the forced induction Elise and
Exige into SS for 2018 is published for member comment. For 2017, these forced
induction models will remain on the exclusion list and the naturally aspirated Elise will
remain classed in SS.
 

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I see that the new 2017 SCCA autocross rules now allow the Lotus Elise, Exige, Exige S, and Exige SC in the super street class!
So my question is, which specific model and year and options are going to be the most ideal for an autocross only car for the SS class?
For 2018... Exige S260 w/ LSD option

I'm not familiar with the spring options for the Exige. If the soft, progressive springs are an option, avoid them or swap them for the LSS spring rates. If stiffer springs are an option, go that route. Shocks swapped to better units, so they're not a deal breaker. The optional Ohlins dampers could work quite well.
 

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C7 Z06, 911 GT3, Cayman GT4... The competition is stacked a bit high. The move to AS would have made things interesting.
For sure.

I think the SC lotus has a good chance in SS just like the NA has in AS, it will be pretty course dependent. Most times I'd take the bigger more powerful car if available.
 

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Both DO affect SCCA classing. I'm not familiar with the specifics for Evoras, but I seem to recall all Lotus being excluded from Street Touring classes where those two mods (wing and tune) typically land most common street vehicles (when wearing 200+ Treadwear rated rubber).

...and I just tried to figure this out. Good news is that I was wrong about Lotus being excluded from Street Touring classes. The Evora S is in Super Street R, but I didn't see the NA version. Perhaps yours would fall into one of their "catch all" assignments based on engine displacement + RWD + #seats + coupe.

Presumably others more knowledgeable than I will offer a better answer.
 

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Does a wing on the back of an Evora NA affect which class? Do things like a tune affect the class as well? I have some simple mods done but nothing major. I was hoping to run an auto X here towards the end of March.
Evora (non S) is in A Street without modifications. Given that the Evora isn't classed in most modified classes, I'd recommend registering your car in SSM... even though it's technically not allowed. Regionally it won't matter.

SCCA classing is sensitive to modifications. Here's a simplified (very simplified) version of what modifications are allowed in each category:

Street: (my car prior to 2017)
- Wheels +/- 1" diameter from stock
- 200+ TW tires, any width you can fit with stock width wheels
- Front _or_ rear anti-roll bar
- Cat-back exhaust that exits in stock location
- Dampers (2-way adjustable max) that are +/- 1" of OE length

Street Touring: (no Lotus in ST* classes)
- Wheel/tire width restrictions by class
- 200+ TW tires
- Exhaust open, cat must remain in stockish location
- Tunes allowed, no boost adjustment, OBD2 must remain
- Springs/dampers open
- Anti-roll bars open
- 25+ lb seats
- Radiator, oil coolers, oil pan, etc. can be mounted
- Brakes can be modified (rotors equal or larger in dimension to OE)
- Engine & trans mounts (equal or greater in weight to OE)
- Non metal suspension bushings
- Aftermarket LSD

Street Prepared: (many Lotus)
- All ST allowances
- No wheel/tire width limits
- DOT slicks allowed
- Spoilers and small splitters
- Tunes totally open (turbo boost changes ok, no supercharger pulley changes)
- Body work changes to fit larger tires/wheels
- Stronger drivetrain components (no gearing changes)
- No cat(s) required
- Update/backdate of engine & trans within a model
- Fully upholstered lightweight seats
- A/C removal

Street Modified: (Glagola's car, Evora excluded)
- All SP allowances
- Engine modifications
- Switch from NA to FI
- Wings, larger splitters (no diffuser changes)
- Further bodywork changes
- Further suspension changes
- Weight limits by displacement, FI, tire width & drivetrain type
- Ballast may be added

Beyond that... Prepared (Fzust's car, Evora not listed)
 

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Just register for the event and someone there, probably in tech inspection, will help you class your car. In the Atlanta region, we have a novice group and it really does not matter what you bring. That way, you get to experience AX while you figure out where your car should be classed when you are ready to compete. Just do it!
 

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Cal Club have a couple of "local" classes:

CALIFORNIA STREET TOURING (CST):
Vehicles eligible for CST must comply with the rules of CSM, with the exception that all of the
tires mounted on the car must have a TREADWEAR number of 140 or higher molded by the
manufacturer on the sidewall.

CALIFORNIA STREET MODIFIED (CSM):
Vehicles eligible for CSM must be capable of being licensed for street use in California, shall be
run on DOT approved tires and must meet all SCCA Solo Safety requirements.

Cheers.
 

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- Weight limits by displacement, FI, tire width & drivetrain type
- Ballast may be added
FWIW, Ballast MUST be added if FI. No elige was delivered heavy enough to qualify with stock displacement and FI. (2120lbs required). Leave out the boost and you can go down to 1805 however... also imperative not to go bigger than 275 on tire width, because that imposes another 200lb penalty... (and also it doesn't fit so well :) tires start to rub at full lock with a 10.5" wheel in the front).

An Evora 2+2 would be SM not SSM since it has 4 seats... which is probably one reason why it's not listed as allowed in Street Modified...
 

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From the November Fastrack !

Recommended Items for 2018
The following subjects will be referred to the Board of Directors for approval. Address all
comments, both for and against, to the Solo Events Board. Member input is suggested and encouraged. Please send your comments via the form at www.soloeventsboard.com


#20242 Lotus Elise Classing
Move to SS from the exclusion list:
Lotus
Elise SC (2008-2011)
Exige S (exc S260, club racer)(2006-2011)
Also move from SS to AS:
Lotus
Elise (non supercharged) (2005-2011)
Exige (non supercharged) (2006-2011
 
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