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Old 08-08-2017, 06:43 PM
JKeesler JKeesler is offline
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Default tire vs speedometer

Just got a 2001 4x4 xlt. Noticed it seems like it's going slower than the speedometer indicates. Also realized the tires don't match. 2 - 275/70R16; 2 - 265/70R16.
Thoughts?
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Old 08-08-2017, 08:01 PM
RAT Ranger RAT Ranger is offline
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Lightbulb Ummm......

Running 2 different size tires on a 4x4 is NEVER GOOD!

What does your door sticker say?

Here is a site to put your tire size off the door sticker and the size tires you plan on running, it will give you your correct speed and what your speedo says.

Tire size / Speedo Calculator

My speedo reads 5 mph faster than what I'm actually doin with the 275/60R15's that I'm runnin on the back since my front driveshaft is removed.
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Old 08-10-2017, 07:11 AM
JKeesler JKeesler is offline
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Default

Thank you.
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Old 08-10-2017, 09:00 PM
Undrstm8ed Undrstm8ed is offline
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Default Re: tire vs speedometer

NOTE:: All calculations "are" based on the assumption of a new tire (as opposed to used) where the numbers on the tire accurately represent the dimensions.

So also keep in mind tires like my DynaPro MT's with ridiculously oversized mud lugs are larger than the typical tire of same size..
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Last edited by Undrstm8ed; 08-10-2017 at 09:03 PM.
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Old 08-10-2017, 09:27 PM
RAT Ranger RAT Ranger is offline
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Question Re: tire vs speedometer

Quote:
Originally Posted by Undrstm8ed View Post
NOTE:: All calculations "are" based on the assumption of a new tire (as opposed to used) where the numbers on the tire accurately represent the dimensions.

So also keep in mind tires like my DynaPro MT's with ridiculously oversized mud lugs are larger than the typical tire of same size..
=====================
What size are your DynaPro's? I'm assuming you bought them used?

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Old 08-11-2017, 10:42 AM
GlennFord GlennFord is offline
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Default Re: Ummm......

Quote:
Originally Posted by RAT Ranger View Post
Running 2 different size tires on a 4x4 is NEVER GOOD!

What does your door sticker say?

Here is a site to put your tire size off the door sticker and the size tires you plan on running, it will give you your correct speed and what your speedo says.

Tire size / Speedo Calculator

My speedo reads 5 mph faster than what I'm actually doin with the 275/60R15's that I'm runnin on the back since my front driveshaft is removed.
Too bad "Size my Tires" doesn't know that some Rangers came stock with 14" tires.
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Old 08-11-2017, 11:39 PM
Undrstm8ed Undrstm8ed is offline
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Default Re: Ummm......

Quote:
Originally Posted by GlennFord View Post
Too bad "Size my Tires" doesn't know that some Rangers came stock with 14" tires.
AND..... 3 different sizes too
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