Z4M Style 224 wheels weighed

[dekaliber]

Don't know if anyone's ever weighed these, but with center caps, TPMS, and balancing weights (no tires) they turned out to be right around (within a couple 1/10ths) 27.5 lbs front and 30 lbs rear.

Felgen-Katalog lists them as 11.20 kg (24.69 lbs) front and 11.70 kg (25.79 lbs) rear.

Could be that my bathroom scale isn't 100% accurate, but I weighed two 30 lb dumbbells and they came in within 0.5 lbs of 30 lbs (29.8 and 30.5). Could be varying manufacturing tolerances in the weights themselves too.

[dekaliber]

Also, another FYI, according to this thread, the 19" E46 ZCP wheels weigh ~23 lbs front and ~24 lbs rear.

http://www.m3forum.net/m3forum/showp...&postcount=117
http://www.m3forum.net/m3forum/showp...&postcount=118

Again, contrary to Felgen-Katalog's 12.63 kg (27.84 lbs) front and 13.79 kg (30.40 lbs) rear.

Verdict: They look awesome, and weigh less.

[inTgr8r]

I don't recall seeing an accurate measure before, but others similar to your method.
IIRC yours are a tad higher but in the ball park.

This is the main reason that I'll change them out eventually for some lighter 18s.

[fitchesbass]

Damn that's even heavier than I thought. I am loving my new pick of 19" RGRs so far. Weight is approx 20 lbs front and 22 lbs rear.

[dekaliber]

Originally Posted by inTgr8r

I don't recall seeing an accurate measure before, but others similar to your method.
IIRC yours are a tad higher but in the ball park.

This is the main reason that I'll change them out eventually for some lighter 18s.

I saw a post on another forum that got roughly what I got. Looks like he calculated it based on the weight of the wheel/tire assembly, and subtracting the weight of the tires.

http://forums.bimmerforums.com/forum...t-1169318.html

Front: 27.8 lbs
Rear: 30.6 lbs

But yes, wouldn't be hard to get some lighter wheels than stock!

[inTgr8r]

Originally Posted by fitchesbass

Damn that's even heavier than I thought. I am loving my new pick of 19" RGRs so far. Weight is approx 20 lbs front and 22 lbs rear.

Did you weigh them, or did you find a spec on them somewhere?

[onebluemcm]

Oh, that is awesome - means I'll be losing ~ 10# per wheel in the rear and about 9# per wheel up front with my RAC RG63s....and that's while gaining 1-inch width front and rear!

I will have to gain about 3# at each corner for the bigger tires but, still means a net loss of 26# unsprung weight - not too shabby with bomb proof wheels to boot.

[fitchesbass]

Originally Posted by inTgr8r

Did you weigh them, or did you find a spec on them somewhere?

From TireRack under product description. I haven't actually weighed them personally.

http://www.tirerack.com/wheels/Wheel...7&autoModClar=

[inTgr8r]

thanks
be sure to post some pics when you get them

[fitchesbass]

NP, If I recall correctly, it's the lightest 19" BBS wheel. Below is one pic so far... I won't derail this thread, but when I get a chance to do a little photoshoot I'll create a new thread with those snaps.

This picture does a decent job at showing the difference of the BBS hyperblack in shade/dark vs. direct sunlight. In sunlight they almost look like a normal brighter, silver wheel. In the dark lighting they look much darker.

[inTgr8r]

fitchesbass - The RGRs look amazing.

[fitchesbass]

Originally Posted by shift@red

^^look great...although they werent the lightest wheels around, on my first e46 m3 i did 19" BBS LMs and they just looked amazing.
I did 18" forgestars on the z4m and they were 8.5 f/9.5 r and were both under 20 lbs so the weight savings were tremendous (30+ lbs) and I couldnt be happier. The feel of the car is much better and the extra width and grip makes it a lot more confidence inspiring.

LMs are not lighter than RGRs. For the same size, the RGRs are nearly 4.5 lbs lighter than the LMs in the front. There may be other lighter wheels given the same size, but my original comment was more in regard to BBS only.

Given the same size:
19x8,5
19x10

LM Weight (2 piece forged):
24.5 lbs
25.5 lbs

RGR Weight (1 piece forged):
20.3 lbs
22.0 lbs

LMs look great though without a doubt.

Originally Posted by inTgr8r

fitchesbass - The RGRs look amazing.

Thanks - I am loving them so far