11-22-2013, 03:38 PM | #1 |
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19" wheels--what do yours weigh?
Many 19" wheels weigh 25+ lbs, but many prefer to stay under 25 lbs. with 19s. How low do you go? How much of a change can you feel on the street with 21-23 lb. wheels vs. 25-26? Besides being a helluva lot more expensive, I haven't yet found any lighter 19" wheels that suit my eye.
Last edited by stevehecht; 11-22-2013 at 05:18 PM.. |
11-22-2013, 06:30 PM | #2 |
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On a street car with street tires you're not going to feel a difference of 3-4 pounds. Mire important than mass is that they're forged. You'll be running such a short sidewall that you'll have exponentially more risk of bending or breaking a wheel. Forged by default are generally the lightest available as well. The downside is that they're not inexpensive.
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11-22-2013, 06:59 PM | #3 |
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My fronts are 22lbs, rears about 24lbs.
You feel the reduction due to percentage decrease in unsprung weight. Each corner was a 20% reduction. |
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11-22-2013, 07:15 PM | #4 | |
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How does the manufacture of forged wheels differ from non-forged? Are there only these two basic types? Last edited by stevehecht; 11-22-2013 at 08:33 PM.. |
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11-22-2013, 07:32 PM | #5 |
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in a nutshell there are forged and there are cast wheels. There are variations of both, but they all fall under these two main classifications. Models that are forged will indicate such. BBS, Forgeline and some OEM BMW styles are what first come to mind.
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11-23-2013, 09:44 AM | #8 |
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Light wheels and tires while balancing maximum quality and performance to affordability yet attractive is my #1 mission. I cringe when I see people with heavy wheels that are too wide and or height is a focus just for looks or because it's trendy.
IMO - running large wheels for looks is bad for gas mileage and performance and I don't understand why people do that to their cars. For my car I will be switching to forged BBS forged 19x8 front and 19x9 rear running non run flat tires 225/40 front & 255/35 rear resulting in a lose of 32lbs of unstrung weight and rotation mass. Gas mileage should go up by 1mpg, shed 1/10th off 0 to 60 and 1/4 mile not to mention a few feet in stoping. Also what is the purpose of stretching out tires so the rim is completely exposed? Last edited by Gastoys; 11-23-2013 at 09:58 AM.. |
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11-23-2013, 09:53 AM | #9 | |
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11-23-2013, 09:56 AM | #10 |
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Yes, I will be dropping 4lbs per tire switching to non run flats and 4lbs per wheel switching to BBS forged. 8lbs x 4 corners = 32lbs of unstrung weight and rotation mass stripped from the car, that is huge!
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11-23-2013, 09:59 AM | #11 | |
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BBS FIs are <20lbs iirc, and are 19". But they cost 8k for a set... |
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11-23-2013, 10:10 AM | #12 |
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A lot of BBS wheels are flow formed from what I know. They used to make factory wheels for BMW I believe. For a forged wheel, expect to pay at least 1k per wheel. To my knowledge, there is this sort of hierarchy (feel free to correct me)
Cheap china rep << Gravity Cast Reputable (VMR V710) << Flow Formed (BBS CH-R) <<<< Forged (HRE P40) I have Forgestar CF5V in a 19x9.5 et 40 and they weigh in at 22.4 lbs. They are flow formed and "custom fit", which in my case wasn't hub-centric and required an adapter LOL (but I think BMW wheels do come hub-centric). Oh well, very cheap for flow formed at around 1500 for 4. Pics for proof Reads 22.4 lbs Last edited by drob23; 11-23-2013 at 01:54 PM.. |
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11-23-2013, 10:11 AM | #13 |
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Because the material is higher quality, forged wheels do not need to use as much as alloy wheels to attain the same strength. This is what makes them lighter. But they are not stronger.
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11-23-2013, 01:09 PM | #14 | |
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11-23-2013, 01:20 PM | #15 | |
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Also, I think VMR just started selling a flow formed wheel. |
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11-23-2013, 01:22 PM | #16 | |
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Where do three-piece wheels like BBS LMs fit in? |
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11-23-2013, 01:32 PM | #17 | |
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This GTR ran 8 sec 1/4 mile (and really shows off sexy OJ calipers |
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11-23-2013, 01:43 PM | #18 | |
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CCBs reduce rotational mass because the brakes rotate. Right? RIGHT?!?! |
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11-23-2013, 01:52 PM | #19 |
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11-23-2013, 02:06 PM | #20 |
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11-23-2013, 02:35 PM | #21 |
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My 19x10 rears weigh right at 23lbs. Front 19x9 just shy of 20lbs.
Pretty sure my Mich PSS 265/35s weigh more than the wheels. I think I saved about 13lbs per wheel/tire going from stock 18s with summer runflats to Morr 19s with Mich PSS tires even though they're taller and wider. Side point, "flow formed" are the cheaper version of the high end manufacturer wheels. I think you can get a set of HRE's new flowformed wheels for about half of their forged versions. Also, not all forged wheels are created equal as I'm sure you're aware. |
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11-23-2013, 02:46 PM | #22 | |
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Your right foot has the most significant impact on gas mileage. Wheel weight has a marginal impact. For street drivers, the projected gains are all anecdotal. You also make a lot of gross assertions. Not everybody with aftermarket wheels runs a stretched tire either. |
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