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D3 - Axles, Brakes, Suspension and Steering Brakes, Springs, shocks, steering racks, steering columns, suspension arms, wheel hubs etc. |
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#1
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S8 Anti-roll bar
Random thought.
The S8 runs a larger Anti-roll bar that my TDI and possibly other A8s. Has anyone fitted a S8 Anti-roll bar to their A8?
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[center] 06 3.0TDI Quattro: Options: Soft close Doors & Boot, Electric Blinds, Keyless Entry & Start, Bluetooth HandFree, Quad Zone Climate, APS+, 3 Spoke Sports Tiptronic Multi Function Steering Wheel, Heated Seats All Round, Black Leather Comfort Seats, AMI, Sunroof, Drivers & Passenger Electric Memory Seats, Auto Dimming Mirrors, Bi-Xenons AFS2, Dab, Digital TV, Reversing Camera, AV Inputs, Fridge, Solar Roof, TPMS, facelift rear lights, 3G, remote boot closure, Tow Bar. |
#2
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Its on my to-do-list, but not done yet.
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2006 Audi A8 3.0 TDI Quattro Sport A8 W12/S8 Brakes front and rear (385mm/335mm) Focal and JBL speakers, Helix amps S8 anti-roll bars front and rear Complete rear LED taillight Xenon fog lights All interior LED S8 rims 9x20" Stage II tune S8 Grill |
#3
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I think Sport and S have the same antiroll bars, non Sport have smaller, at least that's how it usually is on Audis. And RS models usually only have rear antiroll bar stiffer than S/Sport models but the same on front.
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure |
#4
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It changes through the model years and engines, but as for the 2006 model:
PR-codes: PR-1BK+T15, T41,T81, T82, T14, T8T, T44 Anti-roll bar size 30,3X3,4 mm. Part number 4E0411305AA. PR-1BK+T42, T1H, TB1 Anti-roll bar size 30,8X3,5 mm. Par number 4E0411305AB. PR-2MA+T15, T41, T81, T82, T14, T8T, T44 Anti-roll bar size 30,8X3,5 mm. Part number 4E0411305AB. PR-2MA+T42, T1H, TB1 Anti-roll bar size 31X4,7 mm. Part number 4E0411305AC PR-2MB+T8E Anti-roll bar size 31X4,7 mm. Part number 4E0411305AC. Out of this, we see that the 4.0TDI, 4.2TDI and W12 with sport suspension has the same size anti-roll bar as the S8. 1BK -> normal/standard suspension. 2MA -> sport suspension. 2MB -> sport suspension S8. This was only for the front, and for the rear: Here I don't have the size, but I can compare the part numbers. PR- and engine-codes: PR-1BK+BFM, BFL, BAR, BPK, BVJ, BHT, BSB, BSM, ASN, BNG, ASB has part number 4E0511407D PR-1BK+ ASE, BHT, BTE, BVN, BMC has part number 4E0511407J PR-2MA+ BFM, BFL, BBJ, ASN, BAR, BPK, BFM, BGK, ASB has part number 4E0511407J PR-2MA+ ASE, BHT, BTE has part number 3D0511407B PR-2MB+T8E has part number 3D0511407B Here we see that the 4.0TDI and the W12, both with sport suspension, has the same rear anti-roll bar as the S8. Not so complicated after all?
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2006 Audi A8 3.0 TDI Quattro Sport A8 W12/S8 Brakes front and rear (385mm/335mm) Focal and JBL speakers, Helix amps S8 anti-roll bars front and rear Complete rear LED taillight Xenon fog lights All interior LED S8 rims 9x20" Stage II tune S8 Grill Last edited by NightOwl; 4th June 2015 at 12:52 PM. Reason: Clearifying... |
#5
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There's also a 31X5,5 mm roll bar, 4E0411305R, PR-2MA+T42 which is from the 8-cylinder diesel engine 4.0 L Unit 057.B
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Matt 2004 A8 3.7q, 1998 A4 2.8q, 1994 Coupe 2.8q SORN, |
#6
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Quote:
Edit; actually the 4.0TDI was discontinued in 2005, so it shouldn't been in my list at all.
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2006 Audi A8 3.0 TDI Quattro Sport A8 W12/S8 Brakes front and rear (385mm/335mm) Focal and JBL speakers, Helix amps S8 anti-roll bars front and rear Complete rear LED taillight Xenon fog lights All interior LED S8 rims 9x20" Stage II tune S8 Grill Last edited by NightOwl; 4th June 2015 at 01:54 PM. |
#7
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Not a massive difference.
Not as big as I was expecting. Be interested to see what difference it makes though.
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[center] 06 3.0TDI Quattro: Options: Soft close Doors & Boot, Electric Blinds, Keyless Entry & Start, Bluetooth HandFree, Quad Zone Climate, APS+, 3 Spoke Sports Tiptronic Multi Function Steering Wheel, Heated Seats All Round, Black Leather Comfort Seats, AMI, Sunroof, Drivers & Passenger Electric Memory Seats, Auto Dimming Mirrors, Bi-Xenons AFS2, Dab, Digital TV, Reversing Camera, AV Inputs, Fridge, Solar Roof, TPMS, facelift rear lights, 3G, remote boot closure, Tow Bar. |
#8
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Going by Tdum's level of motion sickness I would say not a lot
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Del |
#9
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I guess it depends what you are after.
Personally I think it could be interesting to see how much better cornering the S8 anti-roll bars will give with the smaller, lighter engine, as its designed to fight the weight of V10, W12 or the heavier diesel engines. Less under-steer, and less tire wear would be welcome to me, driving mostly winding country roads. The front is a simple pick-of and bolt-on operation, while the rear is a bit more challenging as you need to remove the trailing link on both sides, which also has an eccentric washer...
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2006 Audi A8 3.0 TDI Quattro Sport A8 W12/S8 Brakes front and rear (385mm/335mm) Focal and JBL speakers, Helix amps S8 anti-roll bars front and rear Complete rear LED taillight Xenon fog lights All interior LED S8 rims 9x20" Stage II tune S8 Grill |
#10
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Stiffer at the front will give you more understeer, stiffer at the back will give more oversteer (or less understeer)
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure |
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