Tires 790 Tire Questions

[rdln]

AK- Keoke doesn't visit much has he had any power loss to the ground, I wish I still had dealer brochures for my vintage but I coulda swore those tire sizes were an option for 970 as they are standard for 1070s

 

[AKfish]

Steve,
I asked Keoke that very question. Thought it might change the gearing a bit. Not a problem, though. 16 inch on the fronts and 24 inch on the rears. Same diameters as on the 970. Just wider not taller. More surface area and floatation.
Still wondering if anyone has a quote from a dealer that is lower than the website listing. I guess that's what Flywheel referred to. The dealer quote was lower than the configurator....
My owners manual lists the 1070 with 28's on the rears. 13.6x28 and 8x16 on front.
AKfish

 

[XXL]

Hi - I recently purchased a JD 790 w/loader. The owners manual suggest using a calcium chloride water solution in the tires for weight. What is the trade name for calcium chloride? Is there an alternative such as auto or RV anti-freeze that would not damage the tires or rims?

 

[BobT_770]

Data point guys. I have a 770 with turf tires and tubes. They are 13.4-16 I believe but don't quote me on this. They should be same size for 790. I was able to fit 32 gallons of windshield washer in each tire. At, lets say, 7.5 lbs/gal I added 240 lbs to each tire. The improvement is awseome, before I did this I needed to use 4x4 to reverse with FEL full of firewood. Good luck, and enjoy!

 

[RoyJackson]

Hi - I recently purchased a JD 790 w/loader. The owners manual suggest using a calcium chloride water solution in the tires for weight. What is the trade name for calcium chloride? Is there an alternative such as auto or RV anti-freeze that would not damage the tires or rims?

You can use beet juice (sold as RimGuard) or Wind Shield Washer Fluid.
You use antifreeze but that's toxic to animals (also attracts them) if you get a leak.

Calcium Chloride (CaCl) has been used in tractor tires for a lot of years. As long as the fluid level is above the rim, it won't corrode the rim. It's also the heaviest ballast for the price (which is why it's been used so long). My first tractor (Deere 670) had CaCl.

My 790 uses windshield washer fluid, BTW.

 

[jbrumberg]

Flywheel:

I happened to be lurking TBN today after plowing out from a 13" snow storm when I saw this post. According to my NH TC29DA Owners Manual weighting a 11.2x24, 4PR, R1 with a H2O/CaCl2 would add ~253#'s, a 13.6x16, 4PR, R3 would gain ~333#'s, and a 19.50x15, 6PR, R4 would gain 334#'s. Jay

 

[Keoke]

Hi AKfish and Rdln, the front tires on my 970 are not 8.00X16 they are Goodyear 240X70R16 DT810's. This radial R1 tire has the same height as the OEM 7.00X16 Firestone Field & Road tires but are 9.6 inches wide as compared to the OEM 7 inch wide R1's.
Had to change to 990 front rims (#LVA 10550, $78. ea) since the OEM rims were too narrow. My rears are 13.6X 24's and since the front Goodyear's have the same dia as the OEM's my front to back gear ratio is still in line.
I can kick the rears up one size and still be ok on the gear ratio thing.
The wide front tires work well when doing loader work on wet ground since the don't sink as much as the OEM's.
The only down side to this tire move was the bucks for the tires and rims. The clearance factor when turning tight (loader hoses) turned out just fine.
I am attaching a pic of my 970 with Bradco hoe (8') and Long 4n1 bucket.
Note extra glass pack muffler on vertical exhaust.
By the way, I still have the OEM 7.00X16 R1's if anybodys is interested.

will try to get on forum more often,

 

[AKfish]

You can use beet juice (sold as RimGuard) or Wind Shield Washer Fluid.
You use antifreeze but that's toxic to animals (also attracts them) if you get a leak.

Calcium Chloride (CaCl) has been used in tractor tires for a lot of years. As long as the fluid level is above the rim, it won't corrode the rim. It's also the heaviest ballast for the price (which is why it's been used so long). My first tractor (Deere 670) had CaCl.

My 790 uses windshield washer fluid, BTW.

Roy,

I have asked my local dealer about RimGuard and they've never heard of it. He checked with the regional dealer's and didn't come up with any new information other than using foam in the tires... and of course calcium chloride. I refuse to use that stuff -- as I've seen what it does to rims and what a pain it is if you've got a leak (and it'll kill all your grass if it happens in the pasture...)

I'll admit that I haven't dug into the Internet and done a search on my own. I was really hoping that the dealer would have a source and I would be able to buy a small quantity from them.

AKfish

 

[AKfish]

Hi AKfish and Rdln, the front tires on my 970 are not 8.00X16 they are Goodyear 240X70R16 DT810's. This radial R1 tire has the same height as the OEM 7.00X16 Firestone Field & Road tires but are 9.6 inches wide as compared to the OEM 7 inch wide R1's.
Had to change to 990 front rims (#LVA 10550, $78. ea) since the OEM rims were too narrow. My rears are 13.6X 24's and since the front Goodyear's have the same dia as the OEM's my front to back gear ratio is still in line.
I can kick the rears up one size and still be ok on the gear ratio thing.
The wide front tires work well when doing loader work on wet ground since the don't sink as much as the OEM's.
The only down side to this tire move was the bucks for the tires and rims. The clearance factor when turning tight (loader hoses) turned out just fine.
I am attaching a pic of my 970 with Bradco hoe (8') and Long 4n1 bucket.
Note extra glass pack muffler on vertical exhaust.
By the way, I still have the OEM 7.00X16 R1's if anybodys is interested.

will try to get on forum more often,

Hey George,

I just ordered the stock set of R1's (rims and tires) for a 990 to use on my 970.

8x16 fronts and 14.9 x 24 on the rears (I think it's 14.9's..)

Probably should start a new post--- but, will that bugger up my gearing?

AKfish

 

[deerehoe]

I have 770 with r4 tires I had rim guard put in at cost 180.00. Rim guard is ads are in farm magazines.