Tires 790+770 MFWD ratio and R4 tires

   / 790+770 MFWD ratio and R4 tires #1  

irwin

Veteran Member
Joined
Feb 17, 2007
Messages
1,262
Location
SE Conn
Tractor
2004 Kubota L35TLB, '89' Cub Cadet 1541
Hey guys
Recently I decided to replace the dryrotted turf tires with R4's. After speaking with my dealer, they told me the rims and/or tires are NLA.
I did some research. First I had to find the mfwd ratio just to be sure. I called the dealer again, and was told they couldn't find the info, I said try the ratio for a 790 as they should be the same, again they said no good. I said what!? the 790 is practically a current jd model? they said, no, it's a non-current model. Soo I called the help # on deere.com. the polite girl whom answered said she couldn't find the info. Spent time searching the deere site NG.. Then I posted the ? on deere.com site. after some back and forth Jo Ann e-mailed me the ratio ( 1.571 ) With this vital info I then searched tire sites and found a good fit with the proper frt wheel lead ratio.. I did not need to replace any rims.. got a proper size from the Titan tire site then called a local truck tire place and they got me the exact tires from Titan for $290.00 total less. I have moved a lot of dirt with the R4's on:) very nice.
All the people I spoke with were polite enough. I'm sure someone else could've gotten the same results quicker than I did. It wasn't easy for me though..anyone else have a tough time getting tractor specific questions anwered?

...thought you might find this interesting

tim
 
   / 790+770 MFWD ratio and R4 tires #2  
Well that sucks! But at least it worked out in the end:D

You should find a different dealer if they told you the 790 was discontinued, they still show it on the JD website!
John Deere - Compact Utility Tractors - 90 Series

You can even download the manual for the 790, but that part of the website is not working right now.
 
   / 790+770 MFWD ratio and R4 tires
  • Thread Starter
#3  
I tried to look up tech manual info before I called everyone on this. I saw that deere didn't have it working. Really I'm just glad I got away with spending $936.xx instead of Titan tire list pricing or buying new rims...So I feel like I got a fair shake in all this.

I do love the R4's, but unlike many on TBN I don't use the tractor to cut grass. When I get the horse barn up I may not mow more than 1/3 acre. I'll let the horses and maybe sheep do the the rest.

Speaking of lawn care I bought a cheap TORO self propelled model a year and a half ago, died and wouldn't start this morning so went to home depot and bought a Honda 3 speed. I'll never buy another TORO.... no no. Where the area is open enough for a rider, I've got a craftsman LT2000, works fine for me. When it dies I'll get something nice.
 
   / 790+770 MFWD ratio and R4 tires
  • Thread Starter
#4  
Here's the tractor with tires..;)

P1010008.jpg


and with ancient turf tires, anybody need rotted tires..:rolleyes: I didn't think so..:D

770-dirt2.jpg
 
   / 790+770 MFWD ratio and R4 tires #5  
That looks great with those R4's:D
 
   / 790+770 MFWD ratio and R4 tires #6  
Thanks for doing the homework Irwin! For the future benefit of those (like me) with older basic machines, can you post the tire makes and sizes that you purchased? My rear turfs are scary too (sidewall cracks), and now they have 32 gal of windshield washer fluid in them(tubes) AND I go into the woods, which makes life tough for the old turfs.Thanks!
 
   / 790+770 MFWD ratio and R4 tires
  • Thread Starter
#7  
hello Bob: no problem here ya go

Follow this for the rear tires... Titan® 2006 Tire catalog...and this for the front tires....Titan® 2006 Tire catalog...let me know if you have any problems..

edit: frt tire rolling diam. is 71"...rears are 110" . ratio is 1.549 this equals 1.4% lead on frts..
 
   / 790+770 MFWD ratio and R4 tires #8  
Looks like everything worked out nicely, Tim!
Good for you!
 
   / 790+770 MFWD ratio and R4 tires
  • Thread Starter
#9  
RoyJackson said:
Looks like everything worked out nicely, Tim!
Good for you!

Hi Roy; Thanks for your help on this earlier. Almost had to buy bigger rear rims but this works out good for what I need.


I ordered a toothbar to help with dirt chores but I haven't received it yet, was supposed to be delivered on friday-now it's monday and still no long heavy package waiting:( I'll be busy til this coming weekend, so as long as it's here by friday ...........

Hey Bob the rear rims are 11" wide and the 12.4-16 R4's are rated for the rims, but they were a bear getting seated :( .. I gave up and let the truck tire place finish mounting them..they told me it was a real pain for them also. Might be a good idea to use tubes if you go that route... good luck ...tim
 
   / 790+770 MFWD ratio and R4 tires #10  
Did you fill the rear tires, Tim?
 

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