Forum Discussion
j-d
Jul 01, 2017Explorer II
I see three possibilities:
Try to replace 800/16.5 with 875R16.5E, which is available in Firestone TransForce
Doing this requires we figure out the OFFSET of your current wheels, to see if they meet the spec for the larger tires.
Simply replace 800-16.5. There ARE such out there, all off brand, some for Trailers. Don't get Trailer Service tires for your coach. Speed rating is too low. The tires you need should bear "LT" for Light Truck, or at least a Load Range, like "E". What you have now is probably "D". STAY AWAY from Trailer, designated "ST" for Special Trailer.
Replace your rims with 16" and of course 16" tires. If we can get you to the right wrecking yard (for tires and wheels, of course, not personally) I think there should be a set from a Chevy/GMC dually pickup that would work.
I found a thread on a Chevy Truck Forum where an OP had a 1986 G30 with 10500 GVWR and 800/16.5 tires. Seemed to indicate that Chevy Dually Pickup Wheels up to 2010 model year would be on the same "Eight on Six Point Five" bolt pattern, meaning eight lugs, with a bolt circle 6-1/2" diameter. There's also a Center Hole that centers the rim on the hub. The lugs do NOT do that, so while a smaller center hole obviously won't fit, too large a one won't center up and bear load correctly.
If I had the time to work on this, this is what I'd do. Our RV was a Ford chassis, and in 1983 they used odd wheels called "Coined." If it was a 1984 Ford chassis under that "1984 RV" it would have had 16.5 wheels with bolt patterns they used many years after and an easy swap. So I just went with 875R16.5D tires. But that was 15 years ago. 16.5's have gotten a little harder to find since.
Say you find a wrecked dually with nearly new tires (by date code). You could install Dually Valves in four of them, have all six mounted and balanced, and bolt them on. Go a couple years before buying more tires. Get a matching spare too, SEVEN wheels total. If you have a flat on a rear dual, you need to replace with a tire that's a very close match. Otherwise the taller one will overload and blow out.
Let us know what you'd like to do. We'll try to help.
Try to replace 800/16.5 with 875R16.5E, which is available in Firestone TransForce
Doing this requires we figure out the OFFSET of your current wheels, to see if they meet the spec for the larger tires.
Simply replace 800-16.5. There ARE such out there, all off brand, some for Trailers. Don't get Trailer Service tires for your coach. Speed rating is too low. The tires you need should bear "LT" for Light Truck, or at least a Load Range, like "E". What you have now is probably "D". STAY AWAY from Trailer, designated "ST" for Special Trailer.
Replace your rims with 16" and of course 16" tires. If we can get you to the right wrecking yard (for tires and wheels, of course, not personally) I think there should be a set from a Chevy/GMC dually pickup that would work.
I found a thread on a Chevy Truck Forum where an OP had a 1986 G30 with 10500 GVWR and 800/16.5 tires. Seemed to indicate that Chevy Dually Pickup Wheels up to 2010 model year would be on the same "Eight on Six Point Five" bolt pattern, meaning eight lugs, with a bolt circle 6-1/2" diameter. There's also a Center Hole that centers the rim on the hub. The lugs do NOT do that, so while a smaller center hole obviously won't fit, too large a one won't center up and bear load correctly.
If I had the time to work on this, this is what I'd do. Our RV was a Ford chassis, and in 1983 they used odd wheels called "Coined." If it was a 1984 Ford chassis under that "1984 RV" it would have had 16.5 wheels with bolt patterns they used many years after and an easy swap. So I just went with 875R16.5D tires. But that was 15 years ago. 16.5's have gotten a little harder to find since.
Say you find a wrecked dually with nearly new tires (by date code). You could install Dually Valves in four of them, have all six mounted and balanced, and bolt them on. Go a couple years before buying more tires. Get a matching spare too, SEVEN wheels total. If you have a flat on a rear dual, you need to replace with a tire that's a very close match. Otherwise the taller one will overload and blow out.
Let us know what you'd like to do. We'll try to help.
About Motorhome Group
38,706 PostsLatest Activity: Dec 02, 2016