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Thread: Fanatec CSW V2 - BMW GT2 "Spec A" VS BMW GT2 "Spec B" VS Porsche 918 RSR

  1. #1
    Spinelli
    Guest

    Fanatec CSW V2 - BMW GT2 "Spec A" VS BMW GT2 "Spec B" VS Porsche 918 RSR

    I just received my second Fanatec BMW GT2 rim (for a friend) and my Porsche 918 RSR rim. I was curious in comparing the two BMW GT2 rims as sometimes - like with all products - there are un-advertised/un-marketed differences from "identical" model to "identical" model. This is what I discovered...


    Back of wheel material (big center plastic part/cover thing):
    BMW GT2 Rim A - Smooth, but friction, almost as if there is a super, super thin layer of rubber on top of the plastic. There is resistance when you slide your finger over it. Having a wheel's FFB damper setting raised is a kind of way to think about it. A slightly rubber-y plastic.
    BMW GT2 Rim B - Smooth, little friction, no rubber feel but just a harder, low resistance feel.

    Paddle shifter shift-feel and Noise:
    BMW GT2 Rim A: Shift-Feel: Quite positive and sharper than rim B - Noise: Louder than Rim B
    BMW GT2 Rim B: Slightly softer, definitely springy and positive but not as "sharp" and positive as Rim A - Noise: Noticeably - but not massively so - quieter than Rim A

    Paddle Shifter material feel and colour:
    BMW GT2 Rim A: Feel: Very smooth. Almost no texture-feel. - Colour: very dark grey. Like a light black if you know what I mean. I touch of shine on them. A general more metal look and feel.
    BMW GT2 Rim B: Feel: Slightly rough/coarse feel, textured. - Colour: grey / dark-ish grey, definitely lighter than Rim A's almost black colour. Hardly a touch of shine. A generally more stone-like look/feel.

    Quick release:
    BMW GT2 Rim A: Much more force required to slide. About on par with my Porsche 918 RSR rim.
    BMW GT2 Rim B: Requires quite a noticeably less amount of force to slide. It also has a small amount more play.

    When Driving (possibly related to quick-release differences):
    BMW GT2 Rim A: The wheel is less susceptible to metallic sounds, rattles, etc. Furthermore, when the wheel hits the rotation limit-stoppers while spinning at full speed, the sound is a much softer and dampened sound. It doesn't "hurt" me as much when I hear it compared to rim B.
    BMW GT2 Rim B: The wheel is more susceptible to loud, metal-on-metal "clanking" sounds during quite strong and sharp FFB moments. Furthermore, when the wheel hits the rotation-limit stoppers while spinning at full speed, there is a quite sharp/"hard" sound. It really sounds like the wheel is hitting the stoppers hard/sharply.

    - NOTE 1: I did not have the metal quick-release screw installed on any of the wheels. This apparently can really help, especially - I'm guessing - in the BMW Rim B's case.
    - NOTE 2: Rim B was mostly stored without the plastic screw/pin in place. On the other hand, I believe Rim A was usually stored with the plastic screw/pin in place. So, are the quick release and noise differences due to slightly different designs, or does not using the plastic pin make the quick-release partly loose it's spring-strength after a while? Also, did Rim B loosen-up over time because the metal screw wasn't installed during gameplay while maybe rim As' was? I honestly don't know. A lot of speculation/guessing.



    Performance According to "RFR Wheel Test" (download link here, click link after "Lien" - top of post #1)

    Weight:
    BMW GT2 Rim A: 2140 g ≈ 75.486 oz ≈ 4.718 lbs
    BMW GT2 Rim B: 2035 g ≈ 71.783 oz ≈ 4.486 lbs
    Porsche 918 RSR: 1650 g ≈ 58.2021 oz ≈ 3.638 lbs

    With regards to the Porsche's weight-savings over the BMW, Fanatec claim, "... saves about 30% of weight over the BMW GT2 rim ..."

    - Porsche 918 RSR weighs about 23% less than BMW Rim A
    - Porsche 918 RSR weighs about 19% less than BMW Rim B
    - BMW Rim A is about 30% heavier than the Porsche 918 RSR
    - BMW Rim B is about 23% heavier than the Porsche 918 RSR

    Top Speed:
    BMW GT2 Rim A: 185 RPM
    BMW GT2 Rim B: 186 RPM
    Porsche 918 RSR: 187 RPM

    Acceleration (how responsive FFB will feel, how instant it'll change directions, slow-down, and speed-up, how lively and reactive it'll be):
    BMW GT2 Rim A: 1153 RPM/s - (1140, 1130, 1169, 1174)
    BMW GT2 Rim B: 1256 RPM/s - (1243, 1307, 1247, 1259, 1238, 1242)
    Porsche 918 RSR: 1887 RPM/s - (1848, 1952, 1826, 1877, 1934)

    Latency:
    Latency on all wheels was almost always either one of two numbers - about 13.75 ms or about 23.75 ms. It was almost always either-or for both wheels (one 26 ms with the BMW Rim A). I tried powering the base off and on to see if I could find out some sort of pattern but I couldn't. Weird. The latency results didn't affect the acceleration results I.E. the quicker acceleration times were not necessarily the lower latency instances.


    P.S.
    - If anyone wants to know the purchase and/or shipping dates of the rims, the exact serial numbers, etc., then let me know and I'll take them out of their boxes and check
    - If anyone wants graph-pictures of the RFR wheel tests, let me know. Just tell me which exact one you want (by the acceleration result listed above)
    - If enough of you want to see pics of the differences between the two BMW wheels then maybe I'll take some (or maybe a video) if I don't feel lazy, no promises though

  2. #2
    Senior Member
    Join Date
    Jun 2012
    Location
    Germany
    Posts
    147
    BMW GT2 Rim B: The wheel is more susceptible to loud, metal-on-metal "clanking" sounds during quite strong and sharp FFB moments. Furthermore, when the wheel hits the rotation-limit stoppers while spinning at full speed, there is a quite sharp/"hard" sound. It really sounds like the wheel is hitting the stoppers hard/sharply.
    I heard about this "clanking" from other Forums/User. Afaik this was a reason to replace (maybe just repair/change something) the Wheels by Fanatec. When you move the Wheel by Hand, could you reproduce this clanking?


    //Edit: it seems, this Problem could be eliminate by newer Firmware: "- New soft stop / angle limitation (CSW V2)"

    https://www.fanatec.com/forum/discus...mware-released
    English is not my native language. Please be patient ;-)
    Space Shooter for free ;-)

  3. #3
    Spinelli
    Guest
    Quote Originally Posted by Juergen-BY View Post
    I heard about this "clanking" from other Forums/User. Afaik this was a reason to replace (maybe just repair/change something) the Wheels by Fanatec. When you move the Wheel by Hand, could you reproduce this clanking?


    //Edit: it seems, this Problem could be eliminate by newer Firmware: "- New soft stop / angle limitation (CSW V2)"

    https://www.fanatec.com/forum/discus...mware-released
    My CSW V2 base/PC already has driver v219 and Firmware v94 installed.

    You cannot produce the sound by hand. It's only during very sharp and hard FFB moments like running over the curbs while using relatively high FFB. People on other forums also reported that screwing the metal pin/screw thing into the quick release really helped with the issue; all my tests DID NOT have the quick-release metal screw installed but the BMW rim A and Porsche rim were still very quiet.

  4. #4
    Senior Member
    Join Date
    Jun 2012
    Location
    Germany
    Posts
    147
    This is interesting, because i heard also, that some v1 User can`t use their v1 Wheels on v2 Bases. They must send back their Wheels and Fanatec changed the wheelside QR`s. Maybe Fanatec changed the diameter of the wheel shaft a very little bit on the last batch, to avoid these Problems? Together with the actual Wheel QR`s, wich are a little bit wider, the Screw is now needed, to avoid this cranking/cogging?
    English is not my native language. Please be patient ;-)
    Space Shooter for free ;-)

  5. #5
    coops
    Guest
    I still have the csw v1 and i bought the universal hub would never go back to a wheel just buy rims. I might not have the v2 but i'm very impressed with the v1 thats why i didn't upgrade and have never had any problems either still have my gt2 wheel as back up. All my fanatec gear has never failed me AND HAVE OWNED 3 WHEELS TO RIMS UNIVERSAL HUB AND 2 LOTS OF PEDALS.

  6. #6
    Spinelli
    Guest
    Interesting how the 105 gram difference between the two "versions" of the GT2 rim can be clearly seen in the acceleration tests.

    It would have been awesome if Fanatec could have gotten the Porsche rim down to an even 1500 g (rather than 1650). That should have been their target. I wonder if I can do something about that, hmmm.

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