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Old 07-24-2022, 01:58 PM   #1
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Join Date: Jun 2022
Location: Sunny Silicon Valley, California
Posts: 79
is there a fix for speedo reading too high?

I have a 1998 986 base tiptronic and a 1999 986 base 5 speed.
The 98 has 17" tires and the 99 has 18" tires.
They are BOTH reading too high on the speedo.
At 50 mph they both read about 54 mph on the speedo.
I've tested this several ways and believe this to be accurate.

Anyone know how to fix this?
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