Wheel/Tire help...

[jwilkinson79]

Ok, so I want to go from a 20" to a 17" and run a 315/70/17 BFG KO2, trying to figure of what offset/back spacing I'm needing here, it's driving me nuts. Truck is leveled at 2.1, if needed I can go to 2.8 and add a rear spacer just not sure what size. Any help is appreciated.

 

[quietpeen]

How wide of whee,l and are your looking for them to stick out a lot or a little

 

[69GWC]

0 offset to -12 0ffset on a 17x9 rim which should put you at 5" to 4.53" back spacing.
From I have found stock 17s are like 5.75 bs so you need to have 5.5" or more bs to clear the upper a-arms.

 

[quietpeen]

0 offset to -12 0ffset on a 17x9 rim which should put you at 5.5 to 4.53" back spacing.
From I have found stock 17s are like 5.75 bs so you need to have 5.5" or more bs to clear the upper a-arms.

Zero offset on a 9" wheel is 5" backspacing


Less backspacing clears the control arm more

 

[jwilkinson79]

How wide of whee,l and are your looking for them to stick out a lot or a little

I would say an inch or so. Nothing to drastic.

 

[quietpeen]

Get 17x9 zero offset

 

[jwilkinson79]

Get 17x9 zero offset

awesome, thank you for the assistance.

 

[jwilkinson79]

Sorry, one more. So I should be ok set at 2.1 for that size tire then??

 

[69GWC]

Zero offset on a 9" wheel is 5" backspacing


Less backspacing clears the control arm more

You are correct, my bad.

 

[quietpeen]

Sorry, one more. So I should be ok set at 2.1 for that size tire then??

What is the overall diameter of that tire?

 

[quietpeen]

You are correct, my bad.

It's all good, just don't want conflicting info from thread to thread that confuses everyone lol

 

[69GWC]

https://www.ramforum.com/f41/new_wheels_tires-105986/


This might help tbink he installed a similar size

 

[jwilkinson79]

what is the overall diameter of that tire?

34.4"

 

[quietpeen]

With that diameter tire and wheel offset you should be fine. If you have any rubbing It would be minimal