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Old 10-16-2017, 07:17 PM   #1
dmartin1
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285 75 16 for K20? Need pics help.

I have fullfilled my goal for saving $ tp do my 71 k20 cheyenne.
I bought the 2" easy ride lift kit.
I want to run 33 or so tires. Not so much the 12.5 wide though.

The 285 75 keep coming to me, being basically a 33x11.5

I have spent endless nights searching for pics with these tires.found a few.
Seems like most k20 have 35" tires.

I am making this truck my daily driver, my 1 go to vehicle. So i dint want anything too radical.

Can anyone help me out with pictures?

Possibly backspacing on the wheels? I was thinking 8 or 9 inch wide wheel.


Any and all pics or help is greatly appreciated


Need to make this baby roll before i can even get started!
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1969 Shortbed in progress
1982 short step, few suspension and motor upgrades.getting a 468
1978 Shortbed fleet side bonanza fully loaded
1978 k20 Silverado loaded.currently engine-less
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Old 10-16-2017, 08:08 PM   #2
special-K
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Re: 285 75 16 for K20? Need pics help.

I have them with a 4" lift mounted on 8" wheels on my '72 K2500 presently. The last two pictures are a set, also on 8" wheels, on a '72 K/20 I had with no lift. The GMC had sagged stock springs with 33/12.50-16.5s mounted on 9.75 wheels
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
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R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

Last edited by special-K; 10-16-2017 at 08:24 PM.
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Old 10-16-2017, 08:15 PM   #3
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Re: 285 75 16 for K20? Need pics help.

Here is another '72 K/20 with 285/75-16 Super Swamper SSRs on 16 x 8s with 2" lift (Add-A-Leaf)

EDIT: Just remembered, no engine.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
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Old 10-16-2017, 08:52 PM   #4
dmartin1
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Re: 285 75 16 for K20? Need pics help.

Tim, thank you so much. I ran across your posts a few times in my searches.

I envy your fleet of past and present pickups.
Those 285 75 16 tires look to be a great size on an 8 inch wheel.
Looks very practical for a driver.

From the looks, most of those wheels look pretty centered , with just a little sticking out of the fender.
4 inch backspacing?
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1969 Shortbed in progress
1982 short step, few suspension and motor upgrades.getting a 468
1978 Shortbed fleet side bonanza fully loaded
1978 k20 Silverado loaded.currently engine-less
1989 k10 suburban 9" lift
65 nova
And more
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Old 10-16-2017, 09:04 PM   #5
CrewCab59
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Re: 285 75 16 for K20? Need pics help.

A 255/85/16 which is a 33x10x16 , a 8" rim with a tall skinny look.

Thanks
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Old 10-16-2017, 09:12 PM   #6
52napco
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Re: 285 75 16 for K20? Need pics help.

I run 255 85 16 on 16x7 E350 van wheels
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Old 10-16-2017, 10:22 PM   #7
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Re: 285 75 16 for K20? Need pics help.

These kind of threads make me want to take the mags off and see how steel wheels would look on my truck. This board is expensive haha!
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Old 10-16-2017, 10:22 PM   #8
Oscar the grouch
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Re: 285 75 16 for K20? Need pics help.

The 67 k20 has 285 75 16 the 70 k10 has 33 12.50 15 both stock suspension
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Old 10-17-2017, 03:11 AM   #9
72chevynut
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Re: 285 75 16 for K20? Need pics help.

Here is my 71 suburban, I know its not a pickup but it is a K20 with about 2" lift and 285's. Same wheelbase and suspension as the K20 pickups.
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Old 10-17-2017, 07:14 AM   #10
special-K
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Re: 285 75 16 for K20? Need pics help.

Your Suburban makes a great example...and so nice to look at anyway!

Thanks for the compliment. I wish I could have kept all three. That was the plan. The Cheyenne Super in near Roanoke, VA and last I heard had not been touched. The Highlander went to a good friend and it's story is quite the opposite. All I can say is just wait till that rolls out of the shop. Going to be one fine piece.

Yeah, I'd say the backspace is between 3 1/2" and 4". It seems all wheels I've had on my 8-luggers have been, except the 9.75s which have more backspace. It has never mattered enough for me to even know. I have never measured backspace. All that concern comes with modern wheels since things got so goofy. It used to be a wheel was a wheel and all you needed to know is width, diameter, and bolt circle (or truck brand). 8-luggers were all the same bolt pattern across the board.

I've run the 255/75-16s a good bit. They steer with less effort, seem to roll easier, but you can really feel the tall skinniness on lateral movement. Not awful, but definitely an adjustment to a more stable tire. They feel kinda squirrely at first. I think a 7" wheel is perfect for those and 8" for 285/75s.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
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