Is there a Formula to determine ::::::

[BILL WZOREK]

Is there a formula to determine how wide a rim should be
for a size tire ?

Just a example ---If I make my rim 2" wider I can fit a 4" wider tire on it.
AKA every inch wider I make the rim I can go two inches wider on the tire.

( THE ABOVE STATEMENT I DONT THINK IS TRUE ) It is a way to explain what I am looking for.
{ And for GOD sake don't try this at home PLEASE leave it to the professionals }

 

[34flathead]

google Coker tire.
rich

 

[Uncle Bob]

In addition to Coker, other tire mfr. have similar info. It's often on a chart that not only shows rim width, but tire height, cross section width, and so on. Will look something like this:

 

[bobscogin]

Is there a formula to determine how wide a rim should be
for a size tire ?

Generally, you'll be safe using a rim width that's 70%-75% of the tires cross section width.

Bob

 

[Frank The Plumber]

a 4" rim max 6", a 10" rim max 12", a good rule of thumb but not gospel, each tire has a certain standard. If you have a 5" wide rim you have a limited option group of tires.

 

[Lanny]

Bob's chart in a bigger size I hope.
If it comes up as a red X, then click on the X to open.

 

[rustythumb]

i've read that rim width and tread width should be within 1" of each other.