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Topic Review (Newest First)
06-10-2013 08:39 PM
dawhitesJKU that what were all here for
06-10-2013 08:35 PM
gelehman sweet. you've been more than helpful!!
06-10-2013 08:26 PM

"To help you understand tire sizes, let me give you my example
My toyo at2 is 285/70/17.


1- This is the width of the tire in millimeters. The conversion is 1"= 25.4mm so for our example: 285/25.4= 11.22" width.

2 - This part is the "aspect ratio" of the tire and is a relation of the tire's width to the sidewall height of the tire. My example is '70'. This means the sidewall height is 70% (.70 in calculation) of the width of the tire. (this part of the math i don't know lol)

^edit: 11.22 x .70= 7.85

3 - Your wheel size. (i say wheels...since rims are on motorcycles...its like when people say headers when theres only pet peeve)

In conclusion, a 285/70/17 equates to 11.22 wide and is (7.85x2)+17"= 32.71" tall, or basically equivalent to a 33x11.50R17 if we can call it a standard size.

BUT.....the real measurement takes place once the tire is on the wheel and set to psi. then you could use a measuring tape. mine came up to 32 tall, and a lil over 11 wide taking real measurements for my procal setting."
06-10-2013 08:18 PM
gelehman sweet.

and if you've got a moment, a lot of those numbers are in a different language to me. i'm pretty friggan ignorant when it comes to all things auto...what exactly does 285/70/17 mean, if you've got the time, or where can i go to learn?
06-10-2013 08:12 PM
dawhitesJKU 285/70/17 without a lift is A OK. 32.71 tall, 11.22 wide if going by numbers. each tire will differ more/less than the advertised amount. my 285/70/17 measure exactly 32, and a lil over 11 inches wide when taking measurements for my aev procal.
06-10-2013 07:45 PM
32's...too big?

I have a 2013 Jeep Wrangler...I have yet to do anything fun with it, and these stock wheels are...well...tiny. I'm looking at some new rims and tires that would take the overall diameter to 32.7".

do i need to lift this beast first, or will she rock these tires?

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