Wheel and Tire

Changed tires to different sizes

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Old 10-17-2015, 09:15 AM
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Default Changed tires to different sizes

So I needed all 4 new tires, and a buddy of mine had a nice 4 set of 195/60/14 My car calls for 185/75/14 (91 Honda Accord LX)

I was told this would make my speedometer read 65mph and when actually doing 60. Is this true? Should I know drive at 70 when the speed limit is 65?

Last edited by ApatheticAccord; 10-17-2015 at 01:54 PM.
Old 10-17-2015, 11:52 AM
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Default Re: Changed tires to different sizes

There's more adverse effects then just your speedometer/odometer being off. Your handling and braking characteristics will also be effected, and could make the car more unstable at speed.

As for a sizing difference, they're going to make your speedometer off 4.24%. Should you be attempting to drive 65, you need to be driving an indicated 67.75mph.
Old 10-17-2015, 01:50 PM
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Default Re: Changed tires to different sizes

Originally Posted by toyomatt84
There's more adverse effects then just your speedometer/odometer being off. Your handling and braking characteristics will also be effected, and could make the car more unstable at speed.

As for a sizing difference, they're going to make your speedometer off 4.24%. Should you be attempting to drive 65, you need to be driving an indicated 67.75mph.
185/70R14 was the original
Going from 185/70/14 to 195/60/14
Old 10-17-2015, 02:44 PM
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Default Re: Changed tires to different sizes

Originally Posted by ApatheticAccord
185/70R14 was the original
Going from 185/70/14 to 195/60/14
My calculations are with actual original tire size. I noticed the typo.
Old 10-18-2015, 09:22 AM
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Default Re: Changed tires to different sizes

Originally Posted by toyomatt84
My calculations are with actual original tire size. I noticed the typo.
So what would be speed compensation be?
Old 10-18-2015, 01:50 PM
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Default Re: Changed tires to different sizes

Originally Posted by ApatheticAccord
So what would be speed compensation be?
Originally Posted by toyomatt84
...
As for a sizing difference, they're going to make your speedometer off 4.24%. Should you be attempting to drive 65, you need to be driving an indicated 67.75mph.
As I said, I noticed your typographical error.
Old 10-19-2015, 10:37 AM
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Default Re: Changed tires to different sizes

Originally Posted by toyomatt84
As I said, I noticed your typographical error.
Just making sure, I figured your calculations were wrong considering I gave you the wrong numbers, and thus correcting them would give a different speed compensation. My bad.
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