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Is 255/75 R16 bigger than 265/70R16

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Old 06-26-2010, 02:30 AM   #1
ShaLor [OP] ShaLor is offline
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Is 255/75 R16 bigger than 265/70R16

I am looking at buying a used 2004 Tacoma Double Cab 4x4 with TRD Off Road package. This particular truck comes with p255/75 R 16 tires on it. They look like they are bigger than the stock tires, but it seems like the stock tires on the Off Road package is supposed to be p265/70 R16.

Am I seeing things? They look bigger but the numbers indicate that it is a smaller tire to me. What will this change of tire size do for my fuel economy and torque etcetera?

Any help would be greatly appreciated. I searched the forums, but am more confused than when I started.
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Old 06-26-2010, 03:09 AM   #2
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Quote:
Originally Posted by ShaLor View Post
I am looking at buying a used 2004 Tacoma Double Cab 4x4 with TRD Off Road package. This particular truck comes with p255/75 R 16 tires on it. They look like they are bigger than the stock tires, but it seems like the stock tires on the Off Road package is supposed to be p265/70 R16.

Am I seeing things? They look bigger but the numbers indicate that it is a smaller tire to me. What will this change of tire size do for my fuel economy and torque etcetera?

Any help would be greatly appreciated. I searched the forums, but am more confused than when I started.
265/70R16 is roughly 30.6 in. in diameter and 255/75R16 is roughly 31.1 in. in diameter so it is slightly bigger. Shouldn't make a significant difference if anything. By the numbers it may seem like a smaller tire, but the first set of numbers (in this case 255) is the width in millimeters while the second set of numbers (75) is the tire's sidewall height as a percentage of its width (255 mm.) thus making it a taller, but not wider tire than the 265/70R16. Hope this helps!
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Old 06-26-2010, 03:14 AM   #3
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I may be wrong, been there before,but ....

I think the first number (255) is to the width of the tire. The second number is the of height compared to the width (75%).
That would yield (255)(.75) = 191.25 for the first and 186.9 for the second.

Yes the first is a little bigger for height of tire but not for tread width....
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Old 06-26-2010, 03:15 AM   #4
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Old 06-26-2010, 03:18 AM   #5
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Hey Steven... It's 5:16 AM here in Georgia,, Don't you guys sleep out there in Southern California??
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Old 06-26-2010, 03:20 AM   #6
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Hey Steven... It's 5:16 AM here in Georgia,, Don't you guys sleep out there in Southern California??
Haha, my sleep schedule has been thrown off lately. I'm actually just about to hit the hay.
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