I’m not sure what I’ve got here. I purchased my 46 11/2 ton and it came rolling on 19.5 wheels that looked like RV wheels. There is an hub adapter plate on the outside of the wheels. Take a look at the pics and tell me if this set up will work going forward with new 8/19.5 tires? I only have 4 wheels and 4 adapters so if I can identify what I have and where they came from I can go to work sourcing 2 more. I have an original set of 20” wheels but we all know how expensive the 20” tires are so maybe this is an option🤔. Advice appreciated.
Does your truck have dual wheels or singles? Those 19.5’s are set up for duals, you will need 6 of them. Singles with 5/10 on 7.25” bolt pattern are rare. The flat ring on the outside are not ‘adapters’, they go on top of the wheel, under the lug nuts. Since you don’t post your vehicle, those 19.5’s might be larger than your hubs, if so, sleeves(Advance Adapters) are easily made to fill that space.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires. '47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle. '54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed. '55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Yes my truck has duals and yes they were on the outside of the wheel under the lug nuts. The truck only had a single wheel on the rear when I bought it as it was just to move it around. Do you know where the flat rings came from? We’re they used in a stock application of some kind. I will need two more 10 bolt ones to run on the rear duals along with the two I have. I have 4 wheels and it doesn’t look too hard to find two more. I think they were used on Motorhomes.
OK , so with the high cost of 20” tires why don’t more bolters run these 19 1/2 wheels and 8” tires? Seems like the low cost solution. Is there a problem with this set up?
The 19.5" tires are not as tall as the 20", so the tires look small in the wheel opening. The tubeless match for the 20" tube type rims would be the 22.5" rims.
The 225/70/R19.5 tires are about 32" tall while the 7.50-20 are over 37" tall. Shorter tires will lower your max ground speed.
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD
Those rings, they have an official name, only go on the outside of singles or duals, only 4 required for a dually truck. Some on here have had 22.5” wheels made with 10 on 7.25” bolt pattern for an original look, just costly. 19.5’s are a low profile tire to start with, so look undernourished as MikeB stated, if one has access to tools, one can make their own 22.5’s, paying someone to make wheels costs more!
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires. '47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle. '54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed. '55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
I run 22.5 on my truck with the custom wheels and they come in at 36.5" tall which worked out well.
A day without laughter is a day wasted- Charlie Chaplin When wrestling a grizzly bear, you have to keep at it until the bear gets tired, not when you get tired. 1948 Chevy 2-Ton
Ed PPruss I like your observation on "undernourished" tires !! Friends took 10.00x20 lug type rims and welded in centers that looked good and ran a long time.My 51 6400 came with 90% rubber on 3 piece wheels so haven't been into those yet. I saw where rain was blowing in the shed getting those wet,kinda wonder if they are rusting from the inside out ??
Ed Pruss Have widow makers with 7:50-20's about 85% rubber still fine after 20 years. Seldom air these and use the long hose method when I do. Neighbors gave me some 90% tires mud that are waiting. Have loaded these several times so guess I will just carefully use them. History of the truck is 51,000 and been shedded most of the time.
