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blue2000s · 10-25-2009, 08:38 AM

Mike - Excellent points and I agree 100%. The only issue I see in your statement is that the 165k miles should be considered initial miles. In wear-type failures like the one we're dealing with, it's important to consider the individual component useage as opposed to the compiled component useage. For example, 1,000 cars with 10,000 miles each are less likely to give good statistical results in a wear out issue than 100 cars with 100,000 miles each.

Lifetime failures in general follow what's popularly referred to as the "bathtub curve". Where failure rates are high initially as manufacturing defects are exposed, then there is a long period of low incidence as the product functions as designed, and then at the end of useful life, the failure rate increases again as parts wear out.

It is safe to say, though, that the modifications that LN is selling are stronger, more robust parts than the ones they are replacing and will most certainly have a positive effect on failure rate. The magnitude of the effect is what remains to be seen.

10-25-2009, 08:38 AM	#25
blue2000s Porscheectomy Join Date: Mar 2006 Location: Seattle Area Posts: 3,011	Mike - Excellent points and I agree 100%. The only issue I see in your statement is that the 165k miles should be considered initial miles. In wear-type failures like the one we're dealing with, it's important to consider the individual component useage as opposed to the compiled component useage. For example, 1,000 cars with 10,000 miles each are less likely to give good statistical results in a wear out issue than 100 cars with 100,000 miles each. Lifetime failures in general follow what's popularly referred to as the "bathtub curve". Where failure rates are high initially as manufacturing defects are exposed, then there is a long period of low incidence as the product functions as designed, and then at the end of useful life, the failure rate increases again as parts wear out. It is safe to say, though, that the modifications that LN is selling are stronger, more robust parts than the ones they are replacing and will most certainly have a positive effect on failure rate. The magnitude of the effect is what remains to be seen. Last edited by blue2000s; 10-25-2009 at 10:04 AM.