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Thread: 19" Maxxis AT Tyres

  1. 28th October 2016, 08:16 PM #371
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    Quote Originally Posted by PerthDisco View Post
    But isn't it a design reg that mandates this or what award is LR trying to win by upping brake size?
    The 'mines better than yours' design reg

    TDV8 Audi can run 18's,so work that one out

    Slightly lighter than D4 and way more powerful.

    LC200 can run 17's.
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  2. 29th October 2016, 08:53 AM #372
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    A much more effective traction control system also requires better brakes
    Shane
    2005 D3 TDV6 loaded to the brim with 4 kids!
    http://www.aulro.com/afvb/members-rides/220914-too-many-defender-write-ups-here-time-d3.html
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  3. 29th October 2016, 03:02 PM #373
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    Quote Originally Posted by shanegtr View Post
    A much more effective traction control system also requires better brakes


    That alone does not explain the jump from D3 to D4. They both tow the same caravans at same speed and braking was not a problem.

    The bigger brakes indicate a top speed performance orientation which I don't imagine owners are buying the cars for.
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  4. 29th October 2016, 03:09 PM #374
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    Quote Originally Posted by PerthDisco View Post
    But isn't it a design reg that mandates this or what award is LR trying to win by upping brake size?
    IMO LR were lazy in development of the larger rotor size on the D4 and went for a cheaper 2 pot caliper with large ribs over the top of the caliper compromising clearance. There are plenty of 4 pot calipers around for similar size rotors that are much more compact. LR could have used these (off the shelf Brembo for example) and stuck with 18" wheels. The 4 pot calipers have the same effectiveness as the OEM calipers, it is all about ensuring total piston area is maintained.

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  5. 29th October 2016, 05:34 PM #375
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    what do the larger ribs do?

    Quote Originally Posted by cjc_td5 View Post
    IMO LR were lazy in development of the larger rotor size on the D4 and went for a cheaper 2 pot caliper with large ribs over the top of the caliper compromising clearance. There are plenty of 4 pot calipers around for similar size rotors that are much more compact. LR could have used these (off the shelf Brembo for example) and stuck with 18" wheels. The 4 pot calipers have the same effectiveness as the OEM calipers, it is all about ensuring total piston area is maintained.

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  6. 29th October 2016, 05:37 PM #376
    Grentarc
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    Quote Originally Posted by cjc_td5 View Post
    IMO LR were lazy in development of the larger rotor size on the D4 and went for a cheaper 2 pot caliper with large ribs over the top of the caliper compromising clearance. There are plenty of 4 pot calipers around for similar size rotors that are much more compact. LR could have used these (off the shelf Brembo for example) and stuck with 18" wheels. The 4 pot calipers have the same effectiveness as the OEM calipers, it is all about ensuring total piston area is maintained.

    Sent from my Nexus 7 using AULRO mobile app
    The Brembo calipers on the RRS (with same size discs) need an anti vibration piece removed so that the compomotive 18" wheels fit. Pretty sure the LR 18" still don't fit with this minor modification
    - Justin
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  7. 30th October 2016, 09:30 AM #377
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    Quote Originally Posted by Aaron40 View Post
    what do the larger ribs do?
    The fins would have a cooling effect but they also have a strength function to transfer forces between each side of the caliper. My Engineer would not ok their shaving/removal.
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  8. 30th October 2016, 09:33 AM #378
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    Quote Originally Posted by Grentarc View Post
    The Brembo calipers on the RRS (with same size discs) need an anti vibration piece removed so that the compomotive 18" wheels fit. Pretty sure the LR 18" still don't fit with this minor modification
    By way of example the Chrysler/Dodge/Jeep SRT8 uses a Brembo caliper on a 360mm rotor and 18" can be fitted. Yet to see if suitable for LR wheel.
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  9. 30th October 2016, 09:51 AM #379
    Graeme
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    How do their rim offsets compare with the D4's +53mm?
    MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
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  10. 30th October 2016, 09:51 AM #380
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    Goes to my point that the "Best 4WD in the World" is more interested in glossy interiors and bling than a braking system that can accommodate off road tyres. Sex sells, as they say.

    I still say if it was good enough for the D3 there was no need to change it as towing capacity did not change nor did all customers move to outback NT for unrestricted speed limits.
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