Tires sizes?

[Silver91XJ]

Ok i need to know something about tire sizes. What does a 285/75/16 translate into ie 32x10.5 16? how can i figure this out.
-Pete :D

[jdogg4]

you know I've never figuard that out. All I can tell you is that those tires are for 16 rims. thats what the 16 on the end is.

[Silver91XJ]

Thanks Jdogg i know what all the sizes are and all that i just cant figure out how to calculate the sizes to make it into the second figure. hhmmm

[Silver91XJ]

i called a tire company and they said that the 285/75/16 transfers into a 32.8x11.2 16 just a little piece of FYI :D

[jdogg4]

that for some reason dosn't sound right :huh: cause I have 225/70/16 and I know the 70 isn't even that wide. Did they say how to calculate those or just tell you what you had? I'd be interested.

[Silver91XJ]

Thats what the guy told me he has a program to translate the sizes.

[jdogg4]

no thats cool I wasn't saying your a lire I just was wondering what the scale was like.

[Blupupher]

Here is a converter (http://www.s-series.org/htm/calc/tiresizeconv.htm)

And yup, it is 32.8x11.2

[cherokee89]

no wonder my jeep looks soo wimpy. im riding on 26.3in tires, oh dear

[jdogg4]

you da man Blupupher
Thanks

Ya I'm running my lame 28.4 but not for long I'm on my way out the door to pick up my 31's

[Blupupher]

Yea Jdogg, those metric just dont seem to maks sense sometimes.

But you gotta remember, the 70 or 75 # is the % of tire width in relation to the sidewall height (in mm). For example, a tire that is a 205/75/15 has a sidewall that is 205 mm from the rim to the edge of the tire, and the width would be 153.75mm(75% of 205), but a tire that is a 225/70/15 is 225mm on the sidewall, but is 157.5 mm wide (70% of 225). Also, the height is different from a 225/70/15 (27.4") and a 225/70/16 (28.4"), although the sidewall size and tread width are the same.

[jdogg4]

still a bit confusing but I see the logic I just hate maths, so I'm bookmarking your link.

Thanks.