Author Topic: 83 chev K20 military  (Read 883 times)

Offline 101 airborne

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83 chev K20 military
« on: April 25, 2018, 07:34:33 PM »
What is the max tire size with out body or suspension lift mods ? I have 4.56 gears with 16.5 x 9.50 which measure about 29.5 tall. I want to change to 16 inch rims but don't know which backspacing to get to work with bigger tires for clearance. Thanks from Kansas .

Offline Irish_Alley

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Re: 83 chev K20 military
« Reply #1 on: April 25, 2018, 08:04:15 PM »
i may be 100% wrong but i thought all military trucks were k30s except for the k5

also take a look here
i did a little information gathering about tires/lifts. i have a 91 k3500 crew cab, with no lift and i was able to squeeze 33s under mine
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Offline 1967KaiserM715

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Re: 83 chev K20 military
« Reply #2 on: April 25, 2018, 09:13:41 PM »
Canadians used K20 and K30, not to familiar with the time frame, but did use GM trucks earlier then the US.

As for tires and backspacing, a no lift, 33" may fit, 32" definitely.  A thinner rim and 235/85/16s will look good, with a 4" backspace. As long as there is less then 4" backspace I think any other width of tire can also be accommodated.

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Current Vehicles:1985 GMC K10(Daily) 1991 GMC K2500(Daily) 1975 Beetle(not running) 1985 Mercedes 300D(not running) 1952 M35    1967 M715(not running)
 1986 Chevy K30(under repair)