285/70 r17 or 305/65 r17

Just installed new shocks (6112 @ 1.3/ 5160) and preparing to buy tires during Presidents Day sales.
Would love input on whether to go 285/70 r17 or 305/65 r17. BFGs...
Wheels will be method 701 or 702 at o offset.

Much appreciated.

 

Hmmm?

 

I'm a fan of narrow tires, so I would go with the 285 set. They will weigh less, have less rolling resistance, probably be cheaper, and less cutting will be required.

 

Appreciate it; I believe 285s it is.

 

285/70/17 was the oe tire size for the rock warrior model trucks. Might look small if you lift the front

 

Agree with Hbjeff. I have 5100s on middle setting w/ the stock 285/70R17 on RW wheels, 32.7"x11.2". My next set will be 285/75R17, 33.8"x11.2". No difference in width but will gain about an inch in height.

 

Thanks. So I measured again today- I have about 1" lean(driver); so I am at the crossroads- do I counter the lean by adjusting preload -drop passenger side down to lowest setting on 6112s or do I bump driver side up to 1.9. Other option is driver 2.6/ passenger 1.9. I really don't want to shim but now the lean is bothering me... This is turning into a learning experience. As far as tires- back at square one.

 

From ground to fender well at the center of each tire what are your measurements on all four fenders? Standing behind my truck the drivers side definitely sits lower than the passenger but NMT than 1/4-1/2"...pretty much standard on these trucks. If it bothered me too much I would look at coach builder shims. I think changing the setting on your front shocks to be different on each side will throw everything out of whack. Also if you are not on a perfectly level surface I found those measurements will be exaggerated.

 

Not sure what to do. I really want to get front dialed in before getting new tires. I will keep you posted. Thanks.