| Author |
Message |
    
PerroneFord
| | Posted on Tuesday, March 12, 2002 - 01:22 pm: | 
|
A post just came across on the Rangie list from a DII owner and enthusiast. He had complained about the short life of the DII rotor so he did some investigating. It appears that the minimum usable thickness of the rotor, as stamped on the edge is 11.7mm. After purchasing new rotors, he used his micrometer to measure the new ones, versus the old ones that needed replacing at 30k miles. The brand new rotor out of the box was 12.7mm. A call to the dealer verified that the proper thickness for a new DII rotor is 12.7mm. So you've got 1mm worth of rotor from new to scrap. Can anyone confirm these figures? How about confirming what the specs are for a D1?
It stands to reason that people are complaining about DII brakes because on order not to burn through that 1mm of rotor material too quickly, a very soft, non-abrasive pad compound must be used. If these figures are indeed accurate, I wonder why LR would go to such a system? Another ploy to get you into the dealer?
-P |
Clarance
| | Posted on Tuesday, March 12, 2002 - 06:42 pm: |
|
Exactly!!! |
Paul Long
| | Posted on Friday, March 15, 2002 - 08:48 am: |
|
Perrone, From the DII Factory Service Manual; Front disc min. thickness
New; 24.9 - 25.1 mm (0.980 - 0.988 in.)
Service Limit; 22.0 mm (0.866 in.)
Rear disc min. thickness
New; 12.5 - 12.7 mm (0.492 - 0.500 in.)
Service Limit; 11.7 mm (0.461 in.)
Maximum disc. runout; .15 mm (0.006 in.)
Min. Pad Thickness; 2.0 mm (0.079 in.)
FWIW, just replaced my front rotors at 55,500 mi. and they measured .876 in. (converts I think to 21.9 mm). My rears show very little wear and are about 1 pad change behind the fronts. First 40,000 mi. was not by me on California highways. I assume this was the fronts third pad change. Torqueing front caliper mount bolts to 129 ft. lbs. was the hardest part. A large torque wrench barely fit in the wheel well. '99 DII |
|
Closed: New threads not accepted on this page