[ScottG]

What offset and backspace 20" rim on a '97 F250 2wd?

thanks

 

[Discount Tire]

Depends on the width. Here's what our guide says if you want to try to keep it within the fenders (stock suspension).


Wheel width, Offset, Tire width

6.0 -------- 0/+10 -------- 215/225/235
6.5 -------- 0/+10 -------- 215/225/235
7.0 -------- 0/+15 -------- 225/235/245
7.5 -------- 0/+15 -------- 235/245/255
8.0 -------- 0/+15 -------- 245/265/275

Offsets lower than these will set the wheel out, offsets higher will tuck the wheel in.

Wheels wider than these may need to be test fitted.

Do you know what wheel you are looking at and what its specs are?

 

[ScottG]

I think they were ave. 20 x 9. I think they were -18 with 4.5 backspace.

thanks

 

[Discount Tire]

^
From where the current factory wheels sit, the new 20" wheel will stick out 2" more and will leave aout .25" more clearance from the strut housing. You're going to probably need to make fender modifications to make these work with tires.

 

[ScottG]

I was wrong, they are + 10 offset.
Thanks for your help.

 

[Discount Tire]

I'd test fit. Compared to where your stock 7" wide wheel sits now you're going to need 1" more clearance between your stock wheel and the Strut and you'll need 1" more clearance between your stock wheel and the fender. If you have that clearance let us know and we can help you determine a tire size as well.

 

[ScottG]

ok, thanks. i'll let you know.

 

[ScottG]

update

305/50-20 tires on 20x9 wheels fit on all 4 corners. no rubbing, but, for sure be careful turning on inclines or bumps.