aaronledwidge
New Member
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Hi does anyone happen to know what tpm speedo i would require to fit disco diffs to a series 3 88 with larger 750 16 tyres? I was reading this earlier
Series Land Rover Speedometers | My Series III 109 Land Rover
which would suggest that a 109 speedo would allow for the 750 16 tyres but i wasn't sure what additional drop i would require if i was to use disco diffs.
The standard speed is 1536 tpm
the 109 speedo is 1408 tpm meaning that a 128 tpm adjustment is required for the tyres.
If anyone could help me or explain how to do the calculation that would be fantastic.
thanks
aaron
Series Land Rover Speedometers | My Series III 109 Land Rover
which would suggest that a 109 speedo would allow for the 750 16 tyres but i wasn't sure what additional drop i would require if i was to use disco diffs.
The standard speed is 1536 tpm
the 109 speedo is 1408 tpm meaning that a 128 tpm adjustment is required for the tyres.
If anyone could help me or explain how to do the calculation that would be fantastic.
thanks
aaron
