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Van B |
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#1
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,613 Joined: 20-October 21 From: Maryland Member No.: 26,011 Region Association: None ![]() ![]() |
So, compared to GPS, my Speedo is consistently 5mph too optimistic. My tires are 195/65-15. I’ve read in other threads that has shown to be a good size for correcting error.
So, not really wanting to go taller still, is there any other way to calibrate the Speedo? Thanks, Van |
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Van B |
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#2
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,613 Joined: 20-October 21 From: Maryland Member No.: 26,011 Region Association: None ![]() ![]() |
My Porsche 996 was optimistic with OEM tires by about the same amount. Which meant, just like Clay said, for every mile rolled across the earth, my odometer logged an extra .02.
I’ll go with what I knew and you guys confirmed: get a tire that fits, but is also the correct circumference. |
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