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  1. #1
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    0 out of 1 members liked this post. Yes Reputation No

    Hmmm...weight savings worth it?

    Currently, I have 18 inch VMR wheels tht weigh in at 23 lbs / each.
    I was thinking of ordering LTW-5. They weigh in at 18 lbs.
    Because the difference of weight is only 5 lbs, is it even really worth it?
    whats the difference between a ginger and a shoe.........shoes have soles

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    To some it is. Keep in mind you can get lighter rotors for the front end too. That'll save you another 4-5lbs per wheel. Also there is a pretty large weight difference in runflats vs. regular tires. That will also save a few pounds. It all adds up and when you remove that kind of weight, sprung or unsprung, I can't remember which -it's supposed to be equal to 7 times the weight savings in other places, or so I've heard.

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    Yes yes. Just don't know what Im going to do yet.
    Get rid of the runflat first to nitto Nt05
    whats the difference between a ginger and a shoe.........shoes have soles

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    I can't wait to get rid of mine. I'm doing my best to burn them down to the cords while I choose what tire I want. I was looking at Sumitomo HTZIII since I can still swap them side to side and they're pretty cheap. There's a buy two, get two free deal going on here locally. I'll look into the NT05's, just curious.

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    Then maybe iLl just keep VMR, exchange tires. who knows.
    whats the difference between a ginger and a shoe.........shoes have soles

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    5 pounds is worth it, but you have enough power to compensate. So, I would say keep the money unless you are trying to eek out a 10th. It won't really matter on the strip since you will be running drag rubber and tires anyway so just go for looks. If 5 pounds makes a difference in a race on the street, what are you racing and what are you thinking anyway.

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    i noticed a bit of a difference when I switched over from some heavy gfg wheels to lighter stocks and iss forged wheels(lightest). the car just felt quicker in all sense of the word
    Click here to enlarge

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    It's the unsprung weight equation what matters. That is a 3 to 1 ratio. Meaning for every pound it takes 3 pounds of energy to rotate the mass.
    So if you get wheels that are 5 lbs lighter what you truly save in function is 15 lbs per corner in the mechanical work it takes to rotate the wheel/tire.
    Conclusion: YES it is worth it to get wheels that are 5 lbs lighter.

    Ranger

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    Click here to enlarge

    On our other car we installed KVR light rotors. OEm was 15.9 lbs for one rotor, the KVR was 12.4lbs!

    this is the dyno sheet when I ran the dyno shop, the car was dynoed first with the oem rotors then shortly after with the lighter rotors reducing rotational mass. you can see the gains.

    the same goes for adding light weight wheels and tires.
    Last edited by Nivo; 07-12-2011 at 11:38 PM.

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    Click here to enlarge Originally Posted by Nivo Click here to enlarge
    Click here to enlarge

    On our other car we installed KVR light rotors. OEm was 15.9 lbs for one rotor, the KVR was 12.4lbs!

    this is the dyno sheet when I ran the dyno shop, the car was dynoed first with the oem rotors then shortly after with the lighter rotors reducing rotational mass. you can see the gains.

    the same goes for adding light weight wheels and tires.
    Nice man, great post! This honestly deserves its own thread. Great to see a back to back after a mod like that.

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    Light is were it's at.
    Click here to enlarge
    Drives: Basically a pretty bad ass f250 lifted with 24" wheels! Dpf delete 4" exhaust h&s tuner and intake..

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    I have to say Unfor started some good threads.

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    This thread was only started because of some input he was given in another wheel thread. Unfor doesn't deserve credit for anything to my knowledge
    07 e92 335i Best run: 11.83@ 120.04 w/ 1.84 60' & 2127 DA

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    Click here to enlarge Originally Posted by Trevor008 Click here to enlarge
    This thread was only started because of some input he was given in another wheel thread. Unfor doesn't deserve credit for anything to my knowledge
    No, but he brought some good points into attention.

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    light weight is the cheapest way =D

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    Click here to enlarge Originally Posted by Sorena Click here to enlarge
    No, but he brought some good points into attention.
    Yes, how to put more effort into lies on the internet.

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    The answer to the question, yes. Weight savings are worth it anywhere on a vehicle. its easy to do with a lighter wheel package, Carbon fiber or fiberglass hood (only if it is lighter then the OEM).

    A lighter car of the same make and model will be quicker then the car that is OEM (untouched/heavier).
    2004 330i ZHP, Silver Grey, 6MT.
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    WARNING: This modification is known to the State of California to cause cancer and birth defects or other reproductive harm due to the extreme G forces once turbo kicks in.

    Click here to enlarge

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    Wow, I am really interested to see how much rims, tires and brake set could make, and maybe a light flywheel, just rotational mass. I am also curious how much this would effect skid pad numbers? Great Post!

    Click here to enlarge Originally Posted by Nivo Click here to enlarge
    Click here to enlarge

    On our other car we installed KVR light rotors. OEm was 15.9 lbs for one rotor, the KVR was 12.4lbs!

    this is the dyno sheet when I ran the dyno shop, the car was dynoed first with the oem rotors then shortly after with the lighter rotors reducing rotational mass. you can see the gains.

    the same goes for adding light weight wheels and tires.

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    2 out of 2 members liked this post. Yes Reputation No
    How do you get points so you can give rep points?

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    Like that. you should have at least 100 reps to rep other people.

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    Click here to enlarge Originally Posted by Dinan S3 1 series Click here to enlarge
    How do you get points so you can give rep points?
    Read here: http://www.bimmerboost.com/showthrea...s-been-enabled

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    1 out of 1 members liked this post. Yes Reputation No
    Reducing rotational mass is the number one thing anyone who is serious about racing should think about before power mods.
    Some people live long, meaningful lives.

    Other people eat shit and die.

    I'm not racist, I hate everybody equally; especially fat people.


    Click here to enlarge

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    i don't

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    Click here to enlarge Originally Posted by MAECAL Click here to enlarge
    i don't
    You don't what?

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    2 out of 2 members liked this post. Yes Reputation No
    Yes, its worth it.
    Lighter wheels increase handling and acceleration, same goes with lighter rotors since they are unsprung weight.

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