Jeep Metric to Imperial Tyre size guide - AUSJEEPOFFROAD.COM Jeep News Australia and New Zealand


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Old 11-07-2011
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Exclamation Jeep Metric to Imperial Tyre size guide

Jeep Tyre sizing guide

Jeep tires offroad tyres


Example: 225/70R15
225 = Section width in millimeters
70 = Aspect ratio (ratio of section height to section width)
15 = Rim diameter
R = Radial Construction B = Bias Construction D = Bias Belted Construction




To calculate:
Tire Width: Section width divided by 25.4 (Ex: 225 / 25.4 = 8.86")
Section Height: Tire width times aspect ratio (Ex: 8.86" x 70% = 6.20")
Overall Diameter: Section height times 2 plus rim diameter (Ex: (6.20" x 2) + 15 = 27.40")

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Old 11-07-2011
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NICE! Well done JB!!
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Old 02-08-2011
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How to work out backspacing:

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Old 02-08-2011
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Got another one that I modified for someone when talking about JK rims, it gives a good example:

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Old 16-07-2012
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heres a question relation to backspacing and what not!

im trying to ascertain what will be the widest tire i can use with some 18x9 rims with 4.5 backspacing and still be within the flares for those annoying legal reasons!

at this stage im hoping for

325/60R18 12.8" wide, new flares required i bet!
305/60R18 12.01" wide, might go here if no flares required.
or lastly 275/75R18 if i cannot afford flares and the 305s wont fit.

please have good news for me chaps!

thanks
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Old 16-07-2012
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http://www.onlineconversion.com/tire...conversion.htm



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Old 16-07-2012
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http://www.carbibles.com/tyre_bible.html

I always find this website extremely helpful.
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Old 16-07-2012
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If you are worried about legal reasons, then you wont want 9 in rims

This calculator is brilliant for what you want to know, stick the stock rim configuration on the left then the new options on the right (stock rim is 17 x 7.5 with +45mm offset)

EDIT: Forgot the link!! http://www.rimsntires.com/specs.jsp
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