Autocross- SCCA EV-X Class vs. SS

[Rodney!]

Everything about the SCCA involves dragging of feet

Has anyone tried to fit 285/35/19 RE71RS yet? Looking at tirerack it looks like they're 26.9" tall and 11.4" wide. I currently have 265/35/19 RT660's which are 10.9" wide and need a 5mm spacer to give me comfortable space to the upright on my 19x10 +35's.

285/35-19? That is going to be super close to the ball joint.

Here are my 275/35-19 re71rs, which have ~7mm clearance:

 

[dsgerbc]

I'd be more concerned with the fender clearance on full compression+turning with a taller tire, unless you run >3.5 degrees of front camber.
Having done the extra work to fit 305/30-19 rubber (26.2 diameter) on my previous car, I'm kinda thinking I'd rather get a shorter tire next time.

 

[SK360]

275/35/19 it is! lol.

 

[Yperformance]

Running 285, 35, 20 35 wheel offset with 5mm spacers front and 8 mm rear with 3.5 neg on front 2.5 rear with 6.5 caster lowered with MPP set just above lowest recommended settings been about a year and is all ok.

 

[dsgerbc]

with 3.5 neg on front

Yeah, 3.5 vs 2.5 degrees of camber buys like 8-10mm of extra fender clearance. Also, MYP prob has different clearances.

 

[SK360]

Much better week this week. Was very very wet until about noon then dried out to semi moist for my last 3 runs. 5/54 in raw and 6/54 in pax.

 

[SK360]

Just noticing I really only hit like 370kW peak for output (I've seen 418ish before. Guessing cold battery is to blame, I didn't do any long heating sessions like I normally do since it was raining)

 

[Lindenwood]

Everything about the SCCA involves dragging of feet

Has anyone tried to fit 285/35/19 RE71RS yet? Looking at tirerack it looks like they're 26.9" tall and 11.4" wide. I currently have 265/35/19 RT660's which are 10.9" wide and need a 5mm spacer to give me comfortable space to the upright on my 19x10 +35's.

My 275s are maybe 12mm laterally from the knuckles, but I am running +22 offset wheels and have another 5mm of “spacer” with my aftermarket rotors.

That said, I have to run 3+ degrees of front camber to not rub the fenders on bumps while turning, even at only about a 1” drop.

By my math the 285/35R19 should fit with a 13-14mm spacer (using extended lug nuts, if your wheels allow) on your +35 wheels. Of course, YMMV…

Indeed, 275/35R19 is pretty proven to fit and quite a bit easier.

 

[SK360]

Just ordered the Whiteline Poly offset compliance arm bushings to get some more caster and hopefully tone down toe out on compression. I drove a car with the MPP bearings and it def wasn't for me.

 

[dsgerbc]

with a 15mm spacer

15mm spacers typically require wheels with deep pockets to accommodate OEM lugs sticking out.

 

[gearchruncher]

15mm spacers typically require wheels with deep pockets to accommodate OEM lugs sticking out.

Lots of 15mm spacers have their own lugs. You bolt the spacer to the car with the car's lugs and then the spacer has it's own.

https://www.amazon.com/BLOXSPORT-5x114-3-Hubcentric-Aluminum-Anodized/dp/B07VVNLPW2?th=1

 

[The Other Dan]

Lots of 15mm spacers have their own lugs. You bolt the spacer to the car with the car's lugs and then the spacer has it's own.

https://www.amazon.com/BLOXSPORT-5x114-3-Hubcentric-Aluminum-Anodized/dp/B07VVNLPW2?th=1

I think he's saying the oem lugs are longer than the 15mm spacer so they still stick out after being bolted down. The wheel pockets need to accommodate that.

 

[dsgerbc]

I think he's saying the oem lugs are longer than the 15mm spacer so they still stick out after being bolted down. The wheel pockets need to accommodate that.

yes.
Plain 15mm spacers+extended studs would obviously work fine.

 

[Rodney!]

Everything about the SCCA involves dragging of feet

So, I have a few friends on the SEB and SAC... After multiple conversations with multiple people, the general consensus from anyone that is remotely intelligent, it is UNANIMOUSLY agreed from SCCA brass that the Tesla (and other EV's) do NOT belong in SS.

BUT, it will not be moved. Not at least anytime soon. Basically, the majority of the SCCA membership is against it. There have been a LOT of letters against the Tesla and EV's in general, basically for every 1 letter that is sent in support, there are 5 letters against EV's. So, it seems that the haters are currently winning this one. Sad.

I have been in discussions about a "indexed" Street class for EV's. If they lump all of us together in a pax'd class in street, I would be ok with that. For instance, the model 3 performance, which imho would be the best EV to solo would be the highest pax. The Long range would be slightly less, and the rwd even less so. Sprinkle in a HS pax for the Mustang mach E and the Kia Niro and we will all be happy. right? RIGHT?!? I am hoping to do this locally as a trial run, providing we can come up with some sort of parity.

 

[SK360]

So, I have a few friends on the SEB and SAC... After multiple conversations with multiple people, the general consensus from anyone that is remotely intelligent, it is UNANIMOUSLY agreed from SCCA brass that the Tesla (and other EV's) do NOT belong in SS.

BUT, it will not be moved. Not at least anytime soon. Basically, the majority of the SCCA membership is against it. There have been a LOT of letters against the Tesla and EV's in general, basically for every 1 letter that is sent in support, there are 5 letters against EV's. So, it seems that the haters are currently winning this one. Sad.

I have been in discussions about a "indexed" Street class for EV's. If they lump all of us together in a pax'd class in street, I would be ok with that. For instance, the model 3 performance, which imho would be the best EV to solo would be the highest pax. The Long range would be slightly less, and the rwd even less so. Sprinkle in a HS pax for the Mustang mach E and the Kia Niro and we will all be happy. right? RIGHT?!? I am hoping to do this locally as a trial run, providing we can come up with some sort of parity.

And my 4 year boycott against giving the SCCA a dime continues

 

[NoDrama]

So, I have a few friends on the SEB and SAC... After multiple conversations with multiple people, the general consensus from anyone that is remotely intelligent, it is UNANIMOUSLY agreed from SCCA brass that the Tesla (and other EV's) do NOT belong in SS.

BUT, it will not be moved. Not at least anytime soon. Basically, the majority of the SCCA membership is against it. There have been a LOT of letters against the Tesla and EV's in general, basically for every 1 letter that is sent in support, there are 5 letters against EV's. So, it seems that the haters are currently winning this one. Sad.

I have been in discussions about a "indexed" Street class for EV's. If they lump all of us together in a pax'd class in street, I would be ok with that. For instance, the model 3 performance, which imho would be the best EV to solo would be the highest pax. The Long range would be slightly less, and the rwd even less so. Sprinkle in a HS pax for the Mustang mach E and the Kia Niro and we will all be happy. right? RIGHT?!? I am hoping to do this locally as a trial run, providing we can come up with some sort of parity.

Do you know that the haters' reasons for being against EVs is?

10-15 years from now autocross will be majority EVs, and there'll be good reason to be an ICE hater.

 

[dsgerbc]

10-15 years from now autocross will be majority EVs, and there'll be good reason to be an ICE hater.

That's just on possible future. So many things can change.

My hunch is that if haters win this one, they won't stop and implement a set of humiliating extra rules for EVs, like those in the December proposal. There was a comment on the latter in the April Fastrack, which I assume was from @gearchruncher ...

 

[superflyrolla]

I see there's brave souls in Model 3's registered for SS and SSP at Lincoln "spring nats." Should be interesting how they compare in class and to EVX. I'm going on "real" autocross tires this time. Hopefully, I can get an event or two that isn't 35f and raining between now and then.

 

[gearchruncher]

There was a comment on the latter in the April Fastrack, which I assume was from @gearchruncher ...

Are you talking about letter #33702 in fasttrack? That wasn't me, although I did send them a letter about the EV rules as well, but they never seem to have acknowledged it anywhere. All I got was a comment on my submission for SS->B classing of "thank you for your letter" like everyone else so far.

 

[SK360]

Compliance arm bushings got here. Going in with the rear arms next week.