Has anyone here actually weighed their vehicle?

[bmw m3 s50]

I like my ATX30 battery. Lost 47 or 49 lbs

Could you provide some more details and you experience on the ATX30 battery.

[bmw m3 s50]

It has hardly any capacity and on a car like an E46 with parasitic loss, you can't let it sit or the battery will get toasted unless on a battery tender. The H6 20ah or 40ah are the minimum battery I'd recommend.

Though all the research that I have done, most members here reported good results. You are correct, it is not a battery that could live off a battery tender but as long as it is connected to a battery tender when not in use, there hasn't been any issues that I have read about. The battery also has the built in jump-start which is a plus. This feature senses when the battery is losing power and automatically shuts off requiring you to press the jump-start button to turn it back on. This ensures you won't be left stranded.

This car pretty much stays in the garage on a battery tender and driven on nice days so the daily driven issues that a battery may have will not really be an issue.

As there been any reported issues of the battery not starting after not turning on the car for a couple of hours?

[bmw m3 s50]

If you're going to drop $$ for OEM CSL, you might as well go Karb for the weight savings you're looking for. I'm sure even with the rear wing reinforcement, it'll be a substantial shaving off metal/OEM CSL.

Same with the bumper, if you're chasing grams, something like a GT4/MEC CSL bumper would probably be lighter than OEM CSL.

Also, is that NOS?

For me it's a fine line between weight reduction and building a perfect clean m3. The exterior parts that I have are all OEM CSL parts - the trunk and diffuser. I am trying to get the most in weight reduction but I also want a clean looking car.

HA, and no that is not NOS.

[EthanolTurbo]

Can you give more details about the ATX30 downside? I was under the impression some members here had good results with it

It has hardly any capacity and on a car like an E46 with parasitic loss, you can't let it sit or the battery will get toasted unless on a battery tender. The H6 20ah or 40ah are the minimum battery I'd recommend.

[Gt4]

I like my ATX30 battery. Lost 47 or 49 lbs

On a dedicated track car or street driven car? Still have audio, AC, ...?

[SQ13]

I like my ATX30 battery. Lost 47 or 49 lbs

[Gt4]

Do not do an ATX30 or you'll be miserable. You need at least an Antigravity 20ah or 40ah H6 battery.

Can you give more details about the ATX30 downside? I was under the impression some members here had good results with it

[EthanolTurbo]

I know. Those are on the list of future upgrades. Was planning on going with antigravity atx30 battery which only weights 5lbs. That should be like 40-45lbs there.

Regarding the muffler, I was thinking of looking for a shop to fabricate a custom titanium muffler that would keep sound down.

Do not do an ATX30 or you'll be miserable. You need at least an Antigravity 20ah or 40ah H6 battery.

[Gt4]

If you're going to drop $$ for OEM CSL, you might as well go Karb for the weight savings you're looking for. I'm sure even with the rear wing reinforcement, it'll be a substantial shaving off metal/OEM CSL.

Same with the bumper, if you're chasing grams, something like a GT4/MEC CSL bumper would probably be lighter than OEM CSL.

Also, is that NOS?

We made a cf CSL trunk 2-3 years ago and it weight 10lbs IIRC. Mold wasn't perfect so we never really sell them. We will made a new mold this year.

[dHam_Slow.46M]

This is pretty surprising. What the hell was the point of the composite material than? I thought there would have been a few pounds to be lost.

Now you have me curious. I might have to weigh mine.

If you're going to drop $$ for OEM CSL, you might as well go Karb for the weight savings you're looking for. I'm sure even with the rear wing reinforcement, it'll be a substantial shaving off metal/OEM CSL.

Same with the bumper, if you're chasing grams, something like a GT4/MEC CSL bumper would probably be lighter than OEM CSL.

Also, is that NOS?

[bmw m3 s50]

There's a 100lbs to be lost in stock battery and muffler alone.

I know. Those are on the list of future upgrades. Was planning on going with antigravity atx30 battery which only weights 5lbs. That should be like 40-45lbs there.

Regarding the muffler, I was thinking of looking for a shop to fabricate a custom titanium muffler that would keep sound down.

[bmw m3 s50]

As per RealOEM, metal trunk is 25.3lbs

And RealOEM also says 25.3lbs for CSL trunk. I have one at the shop and it weight 27lbs. I put some pics in a thread on this forum of OEM CSL on scale

This is pretty surprising. What the hell was the point of the composite material than? I thought there would have been a few pounds to be lost.

Now you have me curious. I might have to weigh mine.

[bmw m3 s50]

Pics? It's also kind of odd to have a welded in cage, half or otherwise, and reclinable seats. Sportsters are also not exactly light. You could save quite a bit by going with Pole Positions or RaceTech seats and basic floor mounts.

I would agree with you on that. I have no clue why the previous owner did reclinable seats with the half cage. It might have been due to Turner’s recommendation since they did the majority of the work.

Here is the half cage:

[tr3flip]

There's a 100lbs to be lost in stock battery and muffler alone.

[Gt4]

Any idea what the weight of metal trunk lid is? I also thought there was some weight savings in the OEM CSL trunk.

I don't think I am getting rid of the audio wiring harness because it still will be a street driven vehicle.

As per RealOEM, metal trunk is 25.3lbs

And RealOEM also says 25.3lbs for CSL trunk. I have one at the shop and it weight 27lbs. I put some pics in a thread on this forum of OEM CSL on scale