New wheels and speedometer - Ford Mustang Forum
 
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post #1 of 7 (permalink) Old 03-27-2013 Thread Starter
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New wheels and speedometer

My 2013 GT currently has 18" factory rims. I want to upgrade to 19". I went out to one of those tire size calculators and entered my old size and the new size.

It said my speedometer will be off by 1.7%. Meaning if it says I'm going 60, I'm really going 61. If it says I'm going 100, I'm really going 102.

Do you think this is really a big deal? The speedometer is very hard to read anyway, so I'm not sure one mph makes a big difference. What is your experience?


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post #2 of 7 (permalink) Old 03-27-2013
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Originally Posted by carlg View Post
. . .
Do you think this is really a big deal? The speedometer is very hard to read anyway, so I'm not sure one mph makes a big difference. What is your experience?
I think you already answered your own question . . . you can't even read the speedo that accurately anyway, plus they are usually off a few percent already.

If you are worried about it, you can correct it with a tuner ; personally I would not worry about it.


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post #3 of 7 (permalink) Old 03-27-2013
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I wouldn't worry about it either.
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post #4 of 7 (permalink) Old 03-27-2013
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But would it throw off the odo... i mean its little but 200k miles it will be off lol

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post #5 of 7 (permalink) Old 03-27-2013
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Quote:
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But would it throw off the odo... i mean its little but 200k miles it will be off lol
Yes, but after 200K miles it would only be off 2,700 miles. I would think "no big deal", but I'm not much of a gear-head either....


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post #6 of 7 (permalink) Old 03-27-2013
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I wouldn't worry about it dude, enjoy the car...
post #7 of 7 (permalink) Old 03-27-2013 Thread Starter
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Quote:
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Yes, but after 200K miles it would only be off 2,700 miles. I would think "no big deal", but I'm not much of a gear-head either....


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Nice thing is I think it would be off in my favor. I would really have 200K on the car, but my odo would read 197,300.

2016 GT/CS. Automatic, convertible. So far 100% stock!
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