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▲ 7 r/CarXStreets+1 crossposts

CarX Builder Optimizer | how it's evolved since launch (and my first Ko-fi donation)

https://preview.redd.it/1mqraabq66kh1.png?width=2543&format=png&auto=webp&s=4fcbb3064ab00223784b4c110cbed6864b52d4fe

Hey everyone,

It's been a few months since I first shared CarX Builder Optimizer here and on the Discord, and I wanted to do a quick recap of everything that's changed, because the project has come a long way.

What's changed on the tool side

When I started, it was a pretty basic calculator. Now every module is built on actual physics formulas (Milliken, Pacejka, for those who know their stuff) instead of guesswork.

Differential: proper calculation of accel lock, decel lock, and preload

Suspension: ARB and dampers computed through natural frequency formulas, plus a much better understanding of slider bounds per chassis

Gearbox: ratio optimization to squeeze out more acceleration without killing your top speed

Braking and alignment: same deal, everything's calculated instead of eyeballed

The thing I'm probably most proud of is a dyno curve extractor I built. You feed it a screenshot from the game and it pulls out the power/torque curve automatically. Saves you from manually re-entering dyno data every time.

The moment that actually got to me

This week I got my first Ko-fi donation. Might sound small, but for a solo project built on my free time, it's the first real sign that what I'm building actually matters to some of you. Whoever sent that, thank you, it means a lot and it's genuinely motivating.

What's next

Still digging into the game's physics (slider bounds, damper behavior, that kind of thing) to make the tool more accurate. Also working on something else I'll share more about soon.

Go try it out

If you haven't checked it out yet: carx-bo.willsprod.fr

Would love any feedback, bug reports, or feature ideas, you're the ones actually shaping where this goes. Drop your favorite setups in the comments too 🔥

reddit.com
u/Grand-Interaction539 — 2 days ago
▲ 8 r/CarXStreets

HEAR YE, HEAR YE (I don't know if this counts as NSFW)

Which one looks better?

u/vrenditt — 2 days ago
▲ 73 r/CarXStreets

Made some fun liveries, check it out!

Ok, here are all of the codes and a little description:

Van with black hole: BXD1U61H
This one was a headache to figure out with the layering, but it shows a black hole on one side, and on the other it shows two alien friends looking at it through a window and sharing a blizzy.

Van with desert: 8NFT688B** **
One side shows a Tic Tac style UFO zipping through some sand dunes, and the other side shows a black triangle UFO zipping around the pyramids. You might have to try color matching the blue sky in order for it to look right for you.

Hoonigan mustang: B7YC16CG
This one shows a sunset on a beach, pretty straightforward.

Audi R8: CJ9P6F7D
This one was a lot of fun to make! One side shows a pulsar blasting a planet’s electromagnetic field with solar winds, and the other side just shows a little asteroid with a oui’d leaf on a flag. This one is nice too because it fits a lot of other cars.

Hot Rod: XHHTB421
This one is actually pretty personal, the drivers side shows a black triangle UFO that I witnessed with 4 other friends back in 2021. It was HUUUGE, probably 300 feet long and dead silent with massive mesas in the background. Super cool to witness, especially as someone who’s always thought aliens were probably real. The passenger side shows a more common type of black triangle ufo flying over some sand dunes.

Z35: H7Y1HYCW
This one was my first attempt at a black hole, and shows a planet being ripped apart. I wasn’t really sure how to do the layering so that the accretion disk laid over the event horizon like in interstellar, but I eventually figured it out for the van livery.

35R: KMR74X0Z
This is one of my very first liveries, I just like the transition from yellow to green.

Comment your favorite car and maybe I’ll make a livery for it! The customization might be my favorite aspect of the game, it’s a fun artistic challenge to try to make do with limited shapes.

u/macaroni___addict — 3 days ago
▲ 6 r/CarXStreets

Probably not possible, but is there a way to make the back stiffer for smoother turning in my drag build Miata?

1267 HP/ 1000 KG / AWD

u/LuniticSaiyan — 3 days ago
▲ 21 r/CarXStreets

This is so wrong man

This is not the first Time. The ai of this game is so annoying like wtf man what is this behaviour.

The ai is only good at dirty racing

u/Sharp_Command_3350 — 3 days ago
▲ 8 r/CarXStreets

Speedline Syndicate is SO F-ING HARD!!! 😭😭

Im using this ev9 for speedline Syndicate, and its actually fast no doubt... But the race track and ai are tough af 😭😭

Can someone help me with a good fast moving build for my car here? I have swapped the engine with a HQ7 V6 3.7L

u/AK_Singh24 — 3 days ago
▲ 4 r/CarXStreets

PFA - what are the best sounding motors/turbos after this update?

I'm looking for my next favorite swap and was trying to make a list of the best car sounds now. What are your favorites?

u/Ok_Lock4837 — 3 days ago
▲ 3 r/CarXStreets

I wonder when they going to fix this. Im waiting for months...

Device poco f8 pro

u/karnamun — 3 days ago