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31x10.50R15 vs P265/75R15 31x10.50R15 vs P265/75R15
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31x10.50R15 vs P265/75R15

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Old 02-18-2009, 10:16 AM   #1
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99 Xtra Cab 4x4 SR5 TRD 1999 Xtra Cab Automatic 3.4L V6
Wheelers/Alcan rear AAL. Bilsteins all the way around. Front set at 2.5"
31x10.50R15 vs P265/75R15
What is the difference between the two sizes? Which is bigger? And can I fit the 31x10.5 on a stock 1st gen without rubbing?

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Old 02-18-2009, 10:26 AM   #2
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07 Silverado LTZ 4x4 Automatic
Current Tire New Tire Difference
Diameter inches (mm) 31.65 (803.9) 30.93 (785.54) -0.72 (-18.36) -2.3%
Width inches (mm) 10.43 (265) 10.51 (267) 0.08 (2) 0.8%
Circumference inches (mm) 99.43 (2525.53) 97.16 (2467.85) -2.27 (-57.68) -2.3%
Sidewall Height inches (mm) 7.82 (198.75) 7.46 (189.57) -0.36 (-9.18) -4.6%
Revolutions per mile (km) 637.23 (395.72) 652.12 (404.97) 14.89 (9.25) 2.3%

from: tire size calculator
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Old 02-18-2009, 10:55 AM   #3
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Old 02-18-2009, 11:09 AM   #4
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Quote:
Originally Posted by Delmarva View Post
Current Tire New Tire Difference
Diameter inches (mm) 31.65 (803.9) 30.93 (785.54) -0.72 (-18.36) -2.3%
Width inches (mm) 10.43 (265) 10.51 (267) 0.08 (2) 0.8%
Circumference inches (mm) 99.43 (2525.53) 97.16 (2467.85) -2.27 (-57.68) -2.3%
Sidewall Height inches (mm) 7.82 (198.75) 7.46 (189.57) -0.36 (-9.18) -4.6%
Revolutions per mile (km) 637.23 (395.72) 652.12 (404.97) 14.89 (9.25) 2.3%

from: tire size calculator
x2 That link for the tire calc is really helpful, I would suggest messing around with it!
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Old 02-18-2009, 11:26 AM   #5
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Ummmm......A 265/75/15 IS a 31/10.50/15 They are the same, just one is give in Metric.

Del, your thinking the tire is a 265/75/ 16
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Old 02-18-2009, 11:31 AM   #6
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OME 885's, OME n140s front shocks, Total Chaos UCA's, TSB springs with AAL, 5100 rear shocks, custom built fuel tank skid plate
Tire Size Calculator

Accepts P-Metric and Inches
Current Tire Size: / R
New Tire Size: / R
Your Calcs: 265 / 75-R15 - 31 / 10.5-R15265 / 75-R16 - 325 / 75-R16

Side by side Overlay



Current TireNew TireDifferenceDiameter inches (mm)30.65 (778.5)30.98 (786.84)0.33 (8.34) 1.1%
Width inches (mm)10.43 (265)10.51 (267)0.08 (2) 0.8%
Circumference inches (mm)96.29 (2445.73)97.32 (2471.93)1.03 (26.2) 1.1%
Sidewall Height inches (mm)7.82 (198.75)7.99 (202.92)0.17 (4.17) 2.2%
Revolutions per mile (km)658.02 (408.63)651.05 (404.3)-6.97 (-4.33) -1.1%


Speedo Reading=Actual
Speed
20 mph=20.21 mph
25 mph=25.27 mph
30 mph=30.32 mph
35 mph=35.37 mph
40 mph=40.43 mph
45 mph=45.48 mph
50 mph=50.54 mph
55 mph=55.59 mph
60 mph=60.64 mph
65 mph=65.7 mph
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Old 02-18-2009, 11:53 AM   #7
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98 Tacoma v6 4x4 1998 Access Cab Manual
the 31x10.5r15 came stock on my 98. so there will be no problem.
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Old 02-18-2009, 12:20 PM   #8
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Quote:
Originally Posted by chris4x4 View Post
Ummmm......A 265/75/15 IS a 31/10.50/15 They are the same, just one is give in Metric.

Del, your thinking the tire is a 265/75/ 16
oops...
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