any special needs to put 3" tires on fat bike rims?

[clockjohn]

This forum has been very helpful for this newbie. I have gotten quick responses with excellent info for my questions. Thank you!
Here's another question:
Can you mount 3 inch fat tires on fat tire rims, that came with standard 4.0 inch tires, without any necessary adaptation of the rim to accommodate the smaller tire?
I want to put a smaller, smoother, higher pressure tire on my fat tire bike. I do about 50% paved roads, 40% well groomed dirt roads, and 10% 4x4 trails (not suitable for average cars).
Any help is most appreciated.
Thank you.
John

 

[Explorer-1]

You should specify the width of the rim.

 

[clockjohn]

You should specify the width of the rim.

Thank you. I know nothing about fat tires and their rims. Based on your question I assume that not any 3" fat tire will fit any fat tire rim? Is this correct?
Thanks again for your help.
John

 

[FlatSix911]

John, if you do not know your inner rim width, just measure across the inside of your wheel at the outside of the rim for an approximation.

Take a look at the attached chart for the recommend range... a 29-51 mm inner rim width can fit a ( 3") 72mm wide tire. Hope this helps.

 

[clockjohn]

John, if you do not know your inner rim width, just measure across the inside of your wheel at the outside of the rim for an approximation.

Take a look at the attached chart for the recommend range... a 29-51 mm inner rim width can fit a ( 3") 72mm wide tire. Hope this helps.

View attachment 47430

FlatSix911:
WOW! This is great! A huge help. Thank you so much
John