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Discussion in 'The Garage' started by cybrfire, Apr 24, 2005.
16's or 16.5's or are both available?
Older 1 ton dually rigs came with 16.5 x 6", newer came with 16" x 6". Some of the older large vans or cab and chasis came with 19.5" x 6".
my 81 K30 C+C came with 16", so i'm not sure if that's what you classify as "older". i still have 5 of the 6 wheels off of it sitting here.
my buddy has i think a 78 c30 with 16", not sure if they are original or not. ive seen 16.5s and 16.5" split rims.
Well, I got a pile of 16.5" tires to use up so might as well try and find some 16.5" dually rims for the hauler. Now the next step is to figure out how much of a spacer willl be required to fit 12.5" wide tires in there. Thanks.
I'm not sure how old would be "older" in this case. I have a set of 16.5s that came with a dually axle from a GM pick up .... but I can't remember the year.
I mave a 3" spacer with stock 16" dually rims that are shed with 36 x 12.50R x 16 Swamper radials ... if that helps. I think you're gonna have to mount one of those 12" wide tires on the stock rim and do a little measuring to figure it all out.
Thanks for the tip. I'll definitely mount up a couple and start seeing what's gona work out. I figured it'd be over 2" but hard to say till you can see it all. 3" is a good starting point.
My 84 K30- 16s
16, 16.5, and now 17's on the newer rigs. like stated before some vans came with 19.5's.
my 96k3500 DRW had 16's on it.
My 68 wrecker has 17"....guess that's older, my 82 has 16"...glad they are going back to 17" cause goodyear was going to have to order me a tire for the wrecker untill i convinced them it was OK to patch a weather checked tire...Wrecker is only used once or twice a year...
wow this thread is all messed up,,
17.5 and 16.5 and 16 and 19.5 are all found on gm since the 60s and before through the 80s
i ahve had many 17.5 rim 67-72 duallies they are common as dirt and 19.5 were available
the 71 dually i ahve nopw has 16" splits on it
16.5 existed all the same years too
there were no certain years except that 17.5 and 19.5 died after 72
17.5 were std equipment base rims 72 older years
they were not 17
just for an example, here is straight from 68 chevy truck specs books printed by chevrolet in may 1 1968 series C20 for dealers to show buyers ordering options for a new vehicle purchase/order:
five 17.5" x 5.25"; attachement, 8 studs on 6 1/2" circle; spare carrier under frame; four painted hubcaps are used
on 68 C-20 series trucks these wheel sizes were optional equipment:
16.5" x 6.75" RPO QE7
16.5" x 8/25" RPO S89
16" x 6.00" RPO Q20
i have other years too, and tires and all kinds of other original gm std and optional equipment RPO info
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