Darryl&Rita
Grande Prairie, Alberta
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Late model Ford's went to a metric bolt pattern with the Super Duty, in 1999. GM switched in 2011. Ram still uses the old 8x6.5 pattern. When we swapped to newer rims on our old F 350 SRW, I used a set of wrecking yard rims from an OBS F 350 PowerStroke. I think they were 6.5 wide.
***UPDATE 2006 3500 SRW MegaCab pulling a 2007 fleetwood 5'er
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Krusty
Calgary, Alberta,Canada
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I swapped the 235/85R16 tires on my F250 with 265/75R16 and they look much better
Krusty
92 F-250 4x4 460 5spd 4.10LS Prodigy
97 Rustler RT190
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SweetLou
La Quinta, CA USA
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Thank you all for the help. Another thing to consider is the offset so they don't hit the calipers.
2013 3500 Cummins 6.7 Quadcab 4x4 3.73 68FE Trans, 2007 HitchHiker Discover America 329 RSB
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Grit dog
Black Diamond, WA
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Lwiddis wrote:My advice is stay wth what you have. It’s a grocery getter.
With 16.5s? Maybe makes sense if the rims are really nice. There are plenty to choose from in the $100-less than $200 range, but nowhere near the selection as 16s.
Besides, the OP didn't ask for opinions whether or not to keep them, he said " I am finally getting rid of the original rims that were 16.5 inch and going to 16 inch."
His question was regarding the type of 16" tires, which is confusing in and of itself, as they're just normal tires. Buy some in whatever size and flavor you want and put them on.
"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.
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Grit dog
Black Diamond, WA
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SweetLou wrote:Thank you all for the help. Another thing to consider is the offset so they don't hit the calipers.
Your questions are confusing.
You need to provide more info and state your intentions or none of us can be of any real help, but rather just grasp at straws as to what you're asking.
Offset and backspacing? Just measure what your current wheels are and find something close with similar size tire, or also measure your clearance at steering full lock front and back of the wheel and then you can decide what backspacing and offset will work with the rim width and tire size you want.
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Grit dog
Black Diamond, WA
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Even though you’ve ditched this thread, I’ll add, offset or backspacing likely has nothing to do with it clearing the calipers. I can’t recall any truck up until the early 2000s that had big enough brakes to not clear 16” rims.
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BigToe
USA
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Grit dog wrote:Even though you’ve ditched this thread, I’ll add, offset or backspacing likely has nothing to do with it clearing the calipers. I can’t recall any truck up until the early 2000s that had big enough brakes to not clear 16” rims.
Can't say I blame Sweet Lou, if he in fact did ditch this thread, after you got done with him! So let me get my licks in too...
The 16" rim is actually wider in diameter than a 16.5" rim.
The difference is in the bead taper, which is steeper and more abrupt in a 16" (and all "even" sized truck rims) at 5 degrees, whereas the 16.5" rim has a shallower more gradual bead taper, at 15 degrees.
The steeper bead taper of the 16" rim, combined with the taller bead lip, makes for more secure tire retention, and also makes the outermost diameter (lip edge to lip edge) greater than that of a 16.5" rim.
The drop center contour is also different, and I don't anticipate any issues accommodating what I assume to be drum brakes on the 1972.
That being said, if it were my 1972, and it had original equipment rims, I'd be hard pressed to make the swap, even though I did exactly that in my 1979 E-350 van.
In fact, 3/4 and one ton van wheels from the 80's and up offer another source of 16" rims with the 8x6.5" bolt pattern.
The bump side bodies stick out a bit from the axle track width on that vintage of Ford truck, so as far as visual appearance, a 265 tire will appear to fill the wheel wells... in width, not just height... better than the most fuel efficient 215 tires.
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BenK
SF BayArea
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Ditto bigtoe’s comments and add...
Commercial tires come in 0.5” diameter sizes and do NOT have a safety bead and they carry weight a bit different than our tirres in whole inch diameters.
The safety bead is mostly for run flat and low pressure so that the bead won’t come off the rim.
The pop you hear when the tire mechanic mounts the tire on wheel and 1st air to ‘set the bead’. That is the tire bead running up and over the safety bead (the bump mentioned above) and hits the wheel rim. Also why they soap the tire bead before mounting on the wheel
Very dangerous to mount a whole inch dia tire on a half inch dia wheel.
It will seem to mount and inflate...but it will come off the bead area easily during a hard turn or bump.
To the OP, you can make the switch to 16” dia wheels and tires. It will weigh significantly less than the half inch commercial setup, but will not have the ratings of a half inch dia commercial tire...but...you won’t need that with today’s tire’s.
-Ben Picture of my rig
1996 GMC SLT Suburban 3/4 ton K3500/7.4L/4:1/+150Kmiles orig owner...
1980 Chevy Silverado C10/long bed/"BUILT" 5.7L/3:73/1 ton helper springs/+329Kmiles, bought it from dad...
1998 Mazda B2500 (1/2 ton) pickup, 2nd owner...
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Previous trucks/offroaders: 40's Jeep restored in mid 60's / 69 DuneBuggy (approx +1K lb: VW pan/200hpCorvair: eng, cam, dual carb'w velocity stacks'n 18" runners, 4spd transaxle) made myself from ground up / 1970 Toyota FJ40 / 1973 K5 Blazer (2dr Tahoe, 1 ton axles front/rear, +255K miles when sold it)...
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SweetLou
La Quinta, CA USA
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Grit dog wrote:SweetLou wrote:Thank you all for the help. Another thing to consider is the offset so they don't hit the calipers.
Your questions are confusing.
You need to provide more info and state your intentions or none of us can be of any real help, but rather just grasp at straws as to what you're asking.
Offset and backspacing? Just measure what your current wheels are and find something close with similar size tire, or also measure your clearance at steering full lock front and back of the wheel and then you can decide what backspacing and offset will work with the rim width and tire size you want.
Thanks for clearing it up but what you said is what I was trying to say.
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SweetLou
La Quinta, CA USA
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I didn't ditch the thread, just been busy. Touchy people. All good information here to consider. I might just save my old rims so someday go back to original look. Possibly go to 17 inch and 265. Yes, will fill the wheel well but might be a nice look
* This post was
edited 12/11/20 06:22am by SweetLou *
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