Tires Correct tire pressure

   / Correct tire pressure #1  

Bob_S

Bronze Member
Joined
Oct 8, 2002
Messages
79
Location
Central Ma
Tractor
JD 4310 hydro, 4wd
Can anyone tell me what the correct tire pressure is for a 4310 with a 430 FEL and 47 BH? My manual does not give any guidelines on this. Thanks
 
   / Correct tire pressure #2  
There's a chart on page 47 in the operating manual that
gives maximum pressure allowable for each size/type of tire.

I would suggest weighing the tractor on a truck scale one
axle at a time.

Sometimes dealer specs don't seem to jive with what an accurate
scale says.

From that you can see where you are weight wise. Normally
airing up a tire to max isn't always required if that load
isn't going to be reached. If it has R1 tires I'll bet it
will need to be set at max with a loader and backhoe.

The R4s have the capability to hold much more weight so may
be able to survive lower pressure. Less pressure usually
gives better ride and wider footprint. Too little pressure
may "help" tire dismount rim. /forums/images/graemlins/shocked.gif

Sometimes you can get a chart from a tire manufacturer that
shows what pressure should be run with what weight. The bucket
capacity's probably about 1/3 yard. 1/3 yard drain rock weighs
about 900 pounds. The loader will lift far more from the ground
to about 4 feet then the specs for max height show. I'd guess
that loader would probably lift 1500 or more pounds. So use
that in your tire pressure figures.

Less pressure might allow the tire to "give" a little over
something sharp then accepting a puncture.

My 2cents...

del
 
   / Correct tire pressure #3  
Try searching for this. There was a discussion among the old stuff I looked through when I first got on here.

Think the min pressure needs to be somewhere around 14 psi just to keep the bead from moving relative to the wheel. This is what some folks reported.

Don't think you have a tire heatup problem with low pressures as is the case with car tires. Lower pressures allow more of the tire to imprint upon the pavement/soil, but limited by the bead-to-wheel contact necessary.

Ralph
 
 
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