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Old 04-18-2013, 07:37 PM   #1
mark '87 930
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Join Date: Nov 2011
Location: Toronto, Ontario
Posts: 222
T5 and speedo accuracy question

I recently installed a T5 in my truck (love it btw) and my speedo is is running about 25-30% too fast.

What speedo gears (i have the mechanical speedo) are you folks with T5's running? I have a 20 tooth driven gear and i think my drive gear is 6 tooth, although that one is hard to count i find.

I have a 3.90 rear gear ratio and 29" tires. What are you guys with T5's running?
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