high rpm on highwaywith my (E12) 1978 530i - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 02-27-2012, 02:29 PM
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high rpm on highwaywith my (E12) 1978 530i

i need help i have a 1978 BMW 530i and i want to change out the differential in it because the rpm's are to high on the highway but i cant seem to find any info on what the gear ratio is. please help.
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#2 (permalink) Old 02-28-2012, 02:30 AM
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brettski is just really nice brettski is just really nice brettski is just really nice brettski is just really nice brettski is just really nice
Welcome to the Werkz.

Have a look at RealOEM.com BMW E12 530i Rear-axle-drive
It looks like the ratio is 3.45, but that might not be 100%.
Have a chat with Dan @ Diffsonline diffsonline.com - Custom Geared BMW LSD Differentials
the other option is track down some tyres with a larger rolling diameter, that will have a similar effect at a fraction of the cost.


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#3 (permalink) Old 02-28-2012, 07:30 AM
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thank you
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