Bobcat 763 Tires and Inflation

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HarryN

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Aug 28, 2011
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I have standard tires on my 763. None of the tires have any inflation pressures listed on the side walls! The manual has none either. What to you all inflate your tire pressure to??
 

OldMachinist

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There should max pressures listed somewhere on the tires. You may have to pull one off and look at the other side if the outboard side has been rubbed off. Max pressure is determined by the tire manufacturer based on type and number of plies.
 

Tazza

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There should max pressures listed somewhere on the tires. You may have to pull one off and look at the other side if the outboard side has been rubbed off. Max pressure is determined by the tire manufacturer based on type and number of plies.
I generally fill mine to 50 psi, but i am generally too lazy to check if they are still at that pressure....
 
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HarryN

HarryN

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I keep my tires inflated to 50 psi as well.
Thanks guys. I've bought hundreds of tires in my lifetime and there has always been inflation recommendations on the side walls. But not these (I swear!) Not on the outside, not on the inside. The tires are not scuffed up. You can read all the info. But no pressures. It does say: "Inflate to vehicle manufacturers recommendations". For the record the tires are: Firestone 12-16.5 Super Traction Duplex 8 Ply. I found no reference in Bobcat manuals, but I figured some where between 50 to 60 psi would do. But that's why I aked the question. Maybe you may have had other experience with inflations.
 

OldMachinist

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Thanks guys. I've bought hundreds of tires in my lifetime and there has always been inflation recommendations on the side walls. But not these (I swear!) Not on the outside, not on the inside. The tires are not scuffed up. You can read all the info. But no pressures. It does say: "Inflate to vehicle manufacturers recommendations". For the record the tires are: Firestone 12-16.5 Super Traction Duplex 8 Ply. I found no reference in Bobcat manuals, but I figured some where between 50 to 60 psi would do. But that's why I aked the question. Maybe you may have had other experience with inflations.
Here's link to a Firestone inflation chart. It show max inflation for your tire size as 50psi.
http://firestoneag.spinutech.com/webres/File/Inflation-Tables/TireInfo-LoadInflation-S.pdf
 
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HarryN

HarryN

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Here's link to a Firestone inflation chart. It show max inflation for your tire size as 50psi.
http://firestoneag.spinutech.com/webres/File/Inflation-Tables/TireInfo-LoadInflation-S.pdf
"OldMachinist", I am just amazed regarding your knowledge and skill! I have read many of your posts as well as others (like Tazza). I am grateful for people like you who are willing to share with your time and help. Before I posed the question, I "googled and searched for answers. When I found nothing, only then did I ask... What a great forum... Thanks again
 

OldMachinist

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Joined
May 24, 2006
Messages
2,748
"OldMachinist", I am just amazed regarding your knowledge and skill! I have read many of your posts as well as others (like Tazza). I am grateful for people like you who are willing to share with your time and help. Before I posed the question, I "googled and searched for answers. When I found nothing, only then did I ask... What a great forum... Thanks again
Google results are priorized by who they get paid from, sometimes you have to look thru several pages before you can find any real information.
 

Mrs.Charlie

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May 18, 2024
Messages
7
I have 10 x 16.5 tires, 10 ply for my Bobcat and it only lists kpa, which converts to 73 psi max. Yet, a tire repair guy that put a boot and 2 tubes in the 2 front tires said 50 lbs max. I can't find the inflation for that tire anywhere online nor in the manual. Running them on my S150 Bobcat. Seems the inflation chart goes by the weight of the machine. 2613 kgs is listed as operating weight in the manual.
 

brdgbldr

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Jun 1, 2012
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1,258
I have 10 x 16.5 tires, 10 ply for my Bobcat and it only lists kpa, which converts to 73 psi max. Yet, a tire repair guy that put a boot and 2 tubes in the 2 front tires said 50 lbs max. I can't find the inflation for that tire anywhere online nor in the manual. Running them on my S150 Bobcat. Seems the inflation chart goes by the weight of the machine. 2613 kgs is listed as operating weight in the manual.
A lot of industrial tires will only list the max pressures.

The tires on my A300 are listed at 90 PSI MAX but I found somewhere that for my machine 40 PSI is where they should be kept. This seems to give me a good ride without bouncing me around.

I think what you need to do is start out at around 40 PSI and see how the machine handles. You can experiment to find the least amount of bounce without shaking you to death.

You may also change the PSI depending on what type of surface you are operating on.
 

Mrs.Charlie

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May 18, 2024
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Hmm, ok, thanks. I had to take it in to repair a flat, as apparently when I lent/rented it to a friend, they put tubes in it. My tire guy said to run the tires at around 50psi. I had been using 60psi previously when I first got it.
I have a farm, so mainly running it on dirt to transport bales of hay to the animals in the barnyards, paddocks and pastures, but also cement paddocks and cement floored barns for cleaning out manure. 60psi was working fine for me when I first got it.
Also, he had it for 2 yrs, and the 3 conditions I gave him for use were;
1. take the 2 front tires to a tire specialist and have them professionally re-seated and sealed, as I had recently gotten and installed Over the Tire Rubber Tracks to navigate sloppy snow and manure in the paddocks and I was a novice. So, I had rolled the 2 front tires off the rims 3x and they were losing air slowly, so had to top them up prior to each use; which was maybe once per week at most, if that.
2. It had to be stored inside at all times.
3. I would still have use of it whenever I needed it. So, to that end, I gifted him a Heavy Equipment Trailer that needed work, and he was to fix that up, without having to pay through the nose for float rides, since they lived 2hrs North of me (5 hr float ride).
When I finally asked to use it again recently,
1. he had not fixed the trailer so I had to pay $850 for a float ride (most wanted $1000-$1200).
2. I discovered he only fixed the tires 3 days before I picked it up so he used the tires like that for 2 freaking years.
So, I used it for a few round bale moves, then finally got the main barn cleaned out so used it for 7 hrs one day. 2 days later it had a flat. When I took it to the tire specialist and he replaced the tube he said the reason it went flat is because the tube wasn't installed correctly and it was folded and pinched between the tire and rim. So, it seems he didn't even take it to a tire specialist, probably just some garage.
Thing that gets me, is that he ran my machine for 2 yrs without fixing the front tires, and then when he had to put tubes in, didn't even tell me that so I knew what I was operating with.
The tires never lost air when I got it, only after I got the tracks, and rolled the tires off the 3rd time. Question? I wonder if the 1 tire needed a patch and both needed tubes BECAUSE he never re-seated and sealed the tires 2 yrs ago?
 
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