Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: kinger on April 23, 2010, 10:59:33 AM

Title: tyre sizes
Post by: kinger on April 23, 2010, 10:59:33 AM

hi guys any one know if 265/70/15 tyres are the same size as 31/10.5/15 tyres ??????

Title: Re: tyre sizes
Post by: Bulldog67 on April 23, 2010, 11:05:01 AM

you may be able to make more sense of this tha me:

http://www.dakota-truck.net/TIRECALC/tirecalc.html (http://www.dakota-truck.net/TIRECALC/tirecalc.html)

Title: Re: tyre sizes
Post by: kinger on April 23, 2010, 11:13:54 AM

yep thanks bd, just the ticket, appears to be exactly the same , well maybe a gnats knacker in it. but hey with warm days and cold days will take care of that lol :hysterical:

Title: Re: tyre sizes
Post by: Bulldog67 on April 23, 2010, 11:27:28 AM

my pleasure  :greggmo:

its the gnats whisker bit that throws me  :003:

Title: Re: tyre sizes
Post by: Nosebolt on April 23, 2010, 02:25:43 PM

265/70x15 calcs to 29.606"

there is a tyre cal at the bottom of this page http://www.birtydastards.com/frm/index.php?action=ezportal;sa=page;p=8 (http://www.birtydastards.com/frm/index.php?action=ezportal;sa=page;p=8)

Title: Re: tyre sizes
Post by: tim_aka_tim on April 23, 2010, 02:48:52 PM

Arr. NB is right, you need 265/75R15 to be the same as 31s. 265/70R15 is only 30" tall,
though as wide as a 31.

Title: Re: tyre sizes
Post by: Bulldog67 on April 23, 2010, 07:16:14 PM

so, the moral is, if in doubt, always go that bit bigger  :icon_super:

Title: Re: tyre sizes
Post by: Dave69 on April 23, 2010, 07:22:02 PM

calculated size and actual size are two different things.

the tyres fitted to mine are 265/75/16 (kingpin mud tracker) and these measure 30" in diameter, claculated is 31.64

looks like i might need some bigger tyres