in your garage to make future searches easy.

Condition Value
expand_moreFront axle brake disc diameter
Opel gasoline straight-4 2.0 L Z 20 NET 173 HP at 5500 RPM, 265 N⋅m at 2500 RPM 11.89 in
Opel diesel V6 3.0 L Y 30 DT 174 HP at 4000 RPM, 350 N⋅m at 1800 RPM 1.03 ft
Opel diesel V6 3.0 L Z 30 DT 181 HP 1.03 ft
Opel gasoline V6 3.2 L Z 32 SE 208 HP 1.03 ft
Opel gasoline V6 2.8 L Z 28 NEL 227 HP 1.03 ft
expand_moreAll other modifications
With sports suspension 11.89 in
Otherwise 11.22 in
expand_moreFront axle brake disc thickness
expand_moreFront axle brake disc minimal thickness
Opel gasoline straight-4 2.0 L Z 20 NET 173 HP at 5500 RPM, 265 N⋅m at 2500 RPM 0.98 in
Opel diesel V6 3.0 L Y 30 DT 174 HP at 4000 RPM, 350 N⋅m at 1800 RPM 0.98 in
Opel diesel V6 3.0 L Z 30 DT 181 HP 0.98 in
Opel gasoline V6 3.2 L Z 32 SE 208 HP 0.98 in
Opel gasoline V6 2.8 L Z 28 NEL 227 HP 0.98 in
Opel diesel straight-4 2.0 L Y 20 DTH 99 HP at 4300 RPM, 230 N⋅m at 1950 RPM 0.91 in
expand_moreAll other modifications
With sports suspension 0.98 in
Otherwise 0.91 in
expand_moreFront axle brake lining thickness
With backing plate 0.79 in
expand_moreFront axle brake lining minimal thickness
With backing plate 0.35 in
expand_moreFront axle brake piston diameter
All Opel diesel V6 3.0 L Y 30 DT engines 2.36 in
All Opel gasoline V6 2.8 L Z 28 NEL engines 2.36 in
All Opel diesel V6 3.0 L Z 30 DT engines 2.36 in
All Opel gasoline V6 3.2 L Z 32 SE engines 2.36 in
All other modifications 2.24 in
Maximum lateral run-out of front axle brake disc 0.0012 in
expand_moreMaximum lateral run-out of rear axle brake disc
1.8 with gasoline straight-4 1.8 L 121 HP at 6000 RPM, 165 N⋅m at 4600 RPM engine (2003.5–) 0.0047 in
1.8 with gasoline straight-4 1.8 L 138 HP engine (2005.9–) 0.0047 in
1.9 CDTI with diesel straight-4 1.9 L 118 HP engine (2005.8–) 0.0047 in
All other modifications 0.0012 in
expand_moreRear axle brake disc diameter
Opel diesel V6 3.0 L Y 30 DT 174 HP at 4000 RPM, 350 N⋅m at 1800 RPM 11.5 in
Opel diesel V6 3.0 L Z 30 DT 181 HP 11.5 in
Opel gasoline V6 3.2 L Z 32 SE 208 HP 11.5 in
Opel gasoline V6 2.8 L Z 28 NEL 227 HP 11.5 in
All other modifications 10.94 in
expand_moreRear axle brake disc thickness
Opel diesel V6 3.0 L Y 30 DT 174 HP at 4000 RPM, 350 N⋅m at 1800 RPM 0.79 in
Opel diesel V6 3.0 L Z 30 DT 181 HP 0.79 in
Opel gasoline V6 3.2 L Z 32 SE 208 HP 0.79 in
Opel gasoline V6 2.8 L Z 28 NEL 227 HP 0.79 in
All other modifications 0.47 in
expand_moreRear axle minimal brake disc thickness
Opel diesel V6 3.0 L Y 30 DT 174 HP at 4000 RPM, 350 N⋅m at 1800 RPM 0.71 in
Opel diesel V6 3.0 L Z 30 DT 181 HP 0.71 in
Opel gasoline V6 3.2 L Z 32 SE 208 HP 0.71 in
Opel gasoline V6 2.8 L Z 28 NEL 227 HP 0.71 in
All other modifications 0.35 in
expand_moreRear axle brake lining thickness
With backing plate 0.67 in
expand_moreRear axle minimal brake lining thickness
With backing plate 0.31 in
Rear axle brake piston diameter 1.5 in

Brake system is the most important system in your 2005 Signum. Check pads and disks from time to time and replace them as they worn below minimum thickness allowed by Opel.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2005 Opel Signum user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Opel warranty policy for your region. In some regions DIY service may invalidate your warranty.

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Opel Signum service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 2005 Opel Signum you're not only saving money, but also also improving your technical skills and learning something new.

2005 Opel Signum generations

In 2005 Opel offered 2 generations of the Signum. Brake system specifications may vary in different generations. Be sure that you are looking at the rigt modification.

Opel Signum A model years

Units:
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