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Tire size conversion

sickquad

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Anyone have a tire size conversion from the LT sizes. I know there is a chart floating around somewhere, haven't found it yet though.

Also, what is a LT tire versus a tire which just gives inch dimensions for there size. Is it just a different designation of size?

-Chris
 
285-80r16
285 is section width in milimeters
80 is the aspect ratio, side wall hieght in relation to section width
r is radial
16 is rim diameter
285mm x 80% x 2 + 16" = tire hieght of 33.95"

is that what you were asking?
 
[ QUOTE ]
Anyone have a tire size conversion from the LT sizes. I know there is a chart floating around somewhere, haven't found it yet though.

Also, what is a LT tire versus a tire which just gives inch dimensions for there size. Is it just a different designation of size?

-Chris

[/ QUOTE ]

Think you're confusing LT for P-metric.

An LT tire is a "light truck" tire as opposed to a P-series "passenger car" tire. Usually means stronger tire, higher capacity, and/or more aggressive tread.

P-metric or metric tire sizes are just stupid. First numebr is tread width in mm, next is a ratio of sidewall to tread, and last is the wheel diameter in inches.

A 265/75-16 is therefore 265mm wide (~10.5") by 31.6" (2 x .75 x 265mm + 16 = ~31.6") in diameter on a 16" wheel. More or less a 32x10.50x16 in the olden days.

Anyway, you can get stupid size tires that are P and stupid size tires that are LT, so the LT designation isn't just to do with size, as it also implies type.

HTH.

-- A
 

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