z4m , whats the actual weight??

beanie · Post by **beanie** » Tue Mar 15, 2022 11:07 am

That makes for a pretty useful bump in hp/tonne

Have you changed the final drive or is it still standard?

TomK · Post by **TomK** » Tue Mar 15, 2022 8:03 pm

BMWZ4MC wrote: ↑Tue Mar 15, 2022 11:03 am
TomK wrote:1381kg

That’s within 5kg of what mine weighed with most of a tank of fuel but no driver.

It's not bad is it to be so low 1300s with a fairly useable car (at least imo!). Still has the front half of the interior and ac, albeit no airbags or sound system. Then you've got the tilletts, the bulkhead removal, li battery, wheels... offset of course by the cage and the pretty heavy front discs (368x36mm)

beanie wrote: ↑Tue Mar 15, 2022 11:07 am That makes for a pretty useful bump in hp/tonne

Have you changed the final drive or is it still standard?

Standard, but it nips along pretty well these days. I want to get a 4.1 in it, yes, makes a lot more sense for the usage. But I also want a drexler, so I'm waiting to do it all at once which I can't really quite justify at the moment.. Car felt pretty great at Goodwood on monday so I'd rather spend the resources on more trackdays tbh!

beanie · Post by **beanie** » Wed Mar 16, 2022 11:35 am

TomK wrote: ↑Tue Mar 15, 2022 8:03 pm Standard, but it nips along pretty well these days. I want to get a 4.1 in it, yes, makes a lot more sense for the usage. But I also want a drexler, so I'm waiting to do it all at once which I can't really quite justify at the moment.. Car felt pretty great at Goodwood on monday so I'd rather spend the resources on more trackdays tbh!

I’ll bet it nips along!

A diff will no doubt be a nice upgrade when the time comes but given how well yours probably goes, I can’t say I’d be in any rush to do it. Might as well flog the standard setup until it groans!

Argenta · Post by **Argenta** » Wed Mar 16, 2022 2:58 pm

This is mine with half a tank and me in (75kg).

CSL wheels, no heavy options (el.seats, satnav etc) just the light ones (cruise, seatheat, PDC etc).

Ed Doe · Post by **Ed Doe** » Mon Aug 01, 2022 7:09 pm

Just had mine corner weighted if anyone is following this thread still!

Tillett carbon buckets and harnesses, apex ec7 alloys, ap racing brakes with alloy bells, but otherwise full interior. Full tank of fuel and an 80kg driver came in at 1520kg. So empty tank and no driver is what 1390kg. Not terrible, seems within the right ballpark compared to others posting here, but I'm still surprised at how lardy the Z4M is generally - 1390 empty of fuel and sans driver is fairly bloody heavy!

Beedub · Post by **Beedub** » Thu Aug 04, 2022 1:44 pm

Ed Doe wrote: ↑Mon Aug 01, 2022 7:09 pm Just had mine corner weighted if anyone is following this thread still!

Tillett carbon buckets and harnesses, apex ec7 alloys, ap racing brakes with alloy bells, but otherwise full interior. Full tank of fuel and an 80kg driver came in at 1520kg. So empty tank and no driver is what 1390kg. Not terrible, seems within the right ballpark compared to others posting here, but I'm still surprised at how lardy the Z4M is generally - 1390 empty of fuel and sans driver is fairly bloody heavy!

mine came in at 1385 with half a tank of fuel no driver.... the new carbon shell seats finally dipped me under the 1400s, i agree tho its a heavy little sucker, the iron block and steel panels.. the trunk lid on the roadster is insanely heavy , easily 40kg plus. i'm trying to get a company to make me a carbon one.

****disclaimer, this may not be the most accurate measurement as i go to the local weighbridge at the TIP, LOL!!!

Ed Doe · Post by **Ed Doe** » Thu Aug 04, 2022 3:51 pm

Beedub wrote: ↑Thu Aug 04, 2022 1:44 pm
Ed Doe wrote: ↑Mon Aug 01, 2022 7:09 pm Just had mine corner weighted if anyone is following this thread still!

Tillett carbon buckets and harnesses, apex ec7 alloys, ap racing brakes with alloy bells, but otherwise full interior. Full tank of fuel and an 80kg driver came in at 1520kg. So empty tank and no driver is what 1390kg. Not terrible, seems within the right ballpark compared to others posting here, but I'm still surprised at how lardy the Z4M is generally - 1390 empty of fuel and sans driver is fairly bloody heavy!
mine came in at 1385 with half a tank of fuel no driver.... the new carbon shell seats finally dipped me under the 1400s, i agree tho its a heavy little sucker, the iron block and steel panels.. the trunk lid on the roadster is insanely heavy , easily 40kg plus. i'm trying to get a company to make me a carbon one.

****disclaimer, this may not be the most accurate measurement as i go to the local weighbridge at the TIP, LOL!!!

well your figure seems to be in the right ballpark anyway, iirc the roadie is supposed to be a bit lighter than the coupe? The fact yours with similar seats brakes and so on is probably about 25kg lighter than mine seems to be about right!

Either way though as you say, with the iron block and so on they aren't lightweights that's for sure!

You got anther trackday booked yet?

abar121 · Post by **abar121** » Sun Aug 07, 2022 8:12 pm

Beedub wrote: ↑Thu Aug 04, 2022 1:44 pm
Ed Doe wrote: ↑Mon Aug 01, 2022 7:09 pm Just had mine corner weighted if anyone is following this thread still!

Tillett carbon buckets and harnesses, apex ec7 alloys, ap racing brakes with alloy bells, but otherwise full interior. Full tank of fuel and an 80kg driver came in at 1520kg. So empty tank and no driver is what 1390kg. Not terrible, seems within the right ballpark compared to others posting here, but I'm still surprised at how lardy the Z4M is generally - 1390 empty of fuel and sans driver is fairly bloody heavy!
mine came in at 1385 with half a tank of fuel no driver.... the new carbon shell seats finally dipped me under the 1400s, i agree tho its a heavy little sucker, the iron block and steel panels.. the trunk lid on the roadster is insanely heavy , easily 40kg plus. i'm trying to get a company to make me a carbon one.

****disclaimer, this may not be the most accurate measurement as i go to the local weighbridge at the TIP, LOL!!!

The trunk lid is listed as 9KG bare. Is it really that much heavier with all the gubins?

https://www.realoem.com/bmw/enUS/part?i ... 1627068277

Beedub · Post by **Beedub** » Mon Aug 08, 2022 5:23 pm

abar121 wrote: ↑Sun Aug 07, 2022 8:12 pm
Beedub wrote: ↑Thu Aug 04, 2022 1:44 pm
Ed Doe wrote: ↑Mon Aug 01, 2022 7:09 pm Just had mine corner weighted if anyone is following this thread still!

Tillett carbon buckets and harnesses, apex ec7 alloys, ap racing brakes with alloy bells, but otherwise full interior. Full tank of fuel and an 80kg driver came in at 1520kg. So empty tank and no driver is what 1390kg. Not terrible, seems within the right ballpark compared to others posting here, but I'm still surprised at how lardy the Z4M is generally - 1390 empty of fuel and sans driver is fairly bloody heavy!
mine came in at 1385 with half a tank of fuel no driver.... the new carbon shell seats finally dipped me under the 1400s, i agree tho its a heavy little sucker, the iron block and steel panels.. the trunk lid on the roadster is insanely heavy , easily 40kg plus. i'm trying to get a company to make me a carbon one.

****disclaimer, this may not be the most accurate measurement as i go to the local weighbridge at the TIP, LOL!!!
The trunk lid is listed as 9KG bare. Is it really that much heavier with all the gubins?

https://www.realoem.com/bmw/enUS/part?i ... 1627068277

i mean i could be wrong by a couple of KG but their is no way that trunk lid i under 35kg. No way. i removed it to get the lid painted after removing a spoiler scratched it.... its insanely heavy .

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