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  1. 01-12-2023 05:40 AM #1
    Gin+
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    Steering rack ratios

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    Anyone know how much quicker (if any) the B6S4 or B7S4 steering rack is compared to base B7 servotronic rack? Thank you.
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  2. 01-12-2023 05:48 AM #2
    xRenesis
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    not really 'quicker' but the force/feel is better

    https://www.audizine.com/forum/showt...ck-Upgrade-DIY
    2005.5 A4 B7 - 2.7t K04 - DTM/S4 OEM+ (My B7 Rear BBK)
    2014 Q5 B8.5 - 3.0t (My B8/B8.5 Rear BBK)
    ig 1red_b7
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  3. 01-12-2023 09:17 AM #3
    Jayz691
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    The s4/rs4 has a slightly quicker ratio. By how much, I can't rem. Was looking around when I replaced my rack, but wound up just getting standard replacement.

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    Last edited by Jayz691; 01-12-2023 at 09:27 AM.
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  4. 01-12-2023 09:17 AM #4
    Jayz691
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    Quote Originally Posted by xRenesis View Post
    not really 'quicker' but the force/feel is better

    https://www.audizine.com/forum/showt...ck-Upgrade-DIY
    They do have a "quicker" ratio. Less turns from lock to lock. Thats what ive read, unless it was bad info..

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  5. 01-12-2023 10:10 AM #5
    xRenesis
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    I do have an RS4 rack/642 in mine, it is so unnoticeable in my opinion for quickness, however the effort and response you get is

    *I can add about how many degrees/turns full lock is after work
    2005.5 A4 B7 - 2.7t K04 - DTM/S4 OEM+ (My B7 Rear BBK)
    2014 Q5 B8.5 - 3.0t (My B8/B8.5 Rear BBK)
    ig 1red_b7
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  6. 01-12-2023 10:43 AM #6
    texasboy21
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    The A4 is 16.3 to 1 https://www.audiworld.com/model/a4/07/A4_tech.pdf

    The S4 is 14.5 https://www.audiworld.com/model/s4/07/S4%20tech%20sedan.pdf



    The rs4 is 13.1 https://www.audiworld.com/model/rs4/..._TechSpecs.pdf
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  7. 01-12-2023 03:23 PM #7
    Jayz691
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    Quote Originally Posted by texasboy21 View Post
    The A4 is 16.3 to 1 https://www.audiworld.com/model/a4/07/A4_tech.pdf

    The S4 is 14.5 https://www.audiworld.com/model/s4/07/S4%20tech%20sedan.pdf



    The rs4 is 13.1 https://www.audiworld.com/model/rs4/..._TechSpecs.pdf
    See, what ive read, is what you mention. But also that s4/rs4 are both 14.5:1, and a b5 rs4 was 13:1. Thats why so much confusion.

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  8. 01-12-2023 03:57 PM #8
    vce1232000
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    I a B7 RS4 rack in the avant after my original started leaking. You can feel the difference when your aggressively around turns & manuerving
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  9. 01-12-2023 04:03 PM #9
    xRenesis
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    Alright so for me, one direction is 1 1/4 turn, so 2 1/2 total lock to lock.

    Same as vce though, original leaked and scored a deal. 4 years so far, and I want to say I checked it when installed to confirm it was an RS4 rack.
    2005.5 A4 B7 - 2.7t K04 - DTM/S4 OEM+ (My B7 Rear BBK)
    2014 Q5 B8.5 - 3.0t (My B8/B8.5 Rear BBK)
    ig 1red_b7
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  10. 01-12-2023 06:07 PM #10
    Gin+
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    It’s odd because my a4b7 has much tighter steering than my a4b6 yet they’re both supposed to be 16.3:1

    I should sit in both and do a turn to lock comparison.
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  12. 01-14-2023 08:44 AM #11
    texasboy21
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    Quote Originally Posted by Gin+ View Post
    It’s odd because my a4b7 has much tighter steering than my a4b6 yet they’re both supposed to be 16.3:1

    I should sit in both and do a turn to lock comparison.
    Your B7 is servtronic - so depending on the relay it may actually be 'tighter' at times.

    Along with the rack itself you also have to run the proper relays to get the most out of the mod.
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