R4 versus R14 tires on RK37

   / R4 versus R14 tires on RK37 #1  

Skipper T

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Joined
Jun 5, 2020
Messages
31
Location
Central IL
Tractor
RK 37HC
I am getting ready to purchase a RK37 and am trying to decide between the R4 and R14 tires.
I know the R1's are high and narrow. I have the R4's on a subcompact tractor. I am wanting to know how the width differs between the R4 and R14 tires. Can anyone help?
 
   / R4 versus R14 tires on RK37 #2  

Blue Mule

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Jan 11, 2021
Messages
269
Location
Central Kentucky
Tractor
New Holland Workmaster 40
Usually R14s are pretty similar in width to the R4s. But given the choice I'd go R14 any day. I hate R4s.
 
   / R4 versus R14 tires on RK37 #3  

agjones

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May 4, 2010
Messages
540
Location
Jessup Mill, NC
Tractor
Rk55HC 4n1 fel/bh, Power-Trac 1850, 425d, Terex pt30, Honda 5013, yanmar 8x8 dumper, Magnatrac mh5000 w/ loader, six way blade & backhoe, Dew-eze MC70 Slope Mower, Terramite t6 4wd, DR Power brush mower
Fwiw, on my rk55, I got r4 instead of the preferred r14 or r1, due to availability...

Pleasantly surprised, the tractor is very sure footed and pretty easy on the ground.
 
   / R4 versus R14 tires on RK37 #4  

oldnslo

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Jan 20, 2010
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5,792
Location
Northern, IL
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Branson 2400H, JD X540
What are you going to use the tractor for? What type of terrain will it be used on? Those are usually the main factors in choosing a tire style.
 
   / R4 versus R14 tires on RK37
  • Thread Starter
#5  
OP
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Skipper T

Member
Joined
Jun 5, 2020
Messages
31
Location
Central IL
Tractor
RK 37HC
Mostly slight hills around my area, flat farm ground in central IL, I am going to be using this on a small horse farm, moving hay bales, spreading manure, landscaping etc. I also will be using the tractor to prepare a 2-acre garden and grooming arenas.
 
   / R4 versus R14 tires on RK37 #6  

oldnslo

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Joined
Jan 20, 2010
Messages
5,792
Location
Northern, IL
Tractor
Branson 2400H, JD X540
R14 for better traction in dirt, R1 for best traction of all the options.
 
   / R4 versus R14 tires on RK37
  • Thread Starter
#7  
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Skipper T

Member
Joined
Jun 5, 2020
Messages
31
Location
Central IL
Tractor
RK 37HC
I just received the following from "Ask the RK Guy" on their website:
I had asked if there was a difference in the tire sizes from the R4 to the R14.
Their data shows the overall height of tractor with a cab at 92.5", my shop door is 94", so needed an idea if I can bring it in the shop,, it is going to be very close!

The dimensions of the R4 and R14 tires is exactly the same. We do not have any way to accurately measure the two against each other though. Their certainly could be a slight difference in cab height between the two tires within your 1.5-inch needs... Tire pressure alone would affect the height that much...

The pressures for tractor tires are wide ranging depending on preference for traction vs rolling resistance.

Your front tires are 8 to 24 psi
Your rear tires are 8 to 30 psi

The lower the pressure The lower the height, the more traction you have available. but the higher the chance of pushing the bead off of the rim
the higher the pressure easier to roll. rougher ride on hard surfaces and less traction.

32007011610-16.6 6PLY R14 FL RK37R14Front Left
32007011810-16.6 6PLY R14 RH RK37R14Front Right
32007012043X16.00-20 6PLY R14 RL RK37R14Rear Left
32007012243X16.00-20 6PLY R14 RR RK37R14Rear Right

32007004210-16.6 6PLY TL TRAC LOADER RK37R4Front Left
32007004410-16.6 6PLY TL TRAC LOADER RK37R4Front Right
32007004643X16.00-20 4PR TL TRAC LOADER RK37R4Rear Left
32007004843X16.00-20 4PR TL TRAC LOADER RK37R4Rear Right
Usv0nEysuAQ6tcIv9D75-3IqJtlwZ-qxd5hDa-wBsgp48c2lm_S32j6X-MpIe0qGMQ_Y64l6U68p_xgAUa6yUio928ago2KePbVwu4T4z6kVPxSPHgO0BKys7dwRMAcVD0FMoUqr6bh8-_ZN3egEQqWQI8gY6CCq6Bm0gq01Uv7u-be7NYBc1f2oAA=s0-d-e1-ft
 
 
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