Calculation Tire Size

[mark1223]

I searched, but dont know if I over looked it, or if it wasn't there. I was wondering, is there to calculate the size of tire, to like 30 or 31? Like a 205/70r17, I know, this is not either one, but just an example of a standard size text. Sorry if this doesnt make sense.

[mtiffinal]

Check this site

 

http://www.1010tires.com/tiresizecalculator.asp

[sic lsx]

my FAv one http://www.discounttiredirect.com/direct/b...nfoTireMath.jsp

[mark1223]

Thanks, so my stocks are 31's. how much bigger could i go, with out a lift? Thanks It is a 07 1500 classic. Thanks for the help and fast reply.

[Matt_]

It's REALLY easy.

 

First number is the width in mm. 25.4mm = 1 inch. So just divide the first number by 25.4 to get the width in inches.

 

The height is a tad but more complicated but just as easy...

 

First Number x Second Number / 1270 + Wheel Diameter = Tire diameter

 

Done.

[358429]

I use this one to compare sizes:

 

http://www.miata.net/garage/tirecalcold.html