R4 versus R14 tires on RK37

[Skipper T]

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?

 

[Blue Mule]

Usually R14s are pretty similar in width to the R4s. But given the choice I'd go R14 any day. I hate R4s.

 

[agjones]

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.

 

[oldnslo]

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.

 

[Skipper T]

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.

 

[oldnslo]

R14 for better traction in dirt, R1 for best traction of all the options.

 

[Skipper T]

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.

320070116	10-16.6 6PLY R14 FL		RK37	R14	Front Left
320070118	10-16.6 6PLY R14 RH		RK37	R14	Front Right
320070120	43X16.00-20 6PLY R14 RL		RK37	R14	Rear Left
320070122	43X16.00-20 6PLY R14 RR		RK37	R14	Rear Right

320070042	10-16.6 6PLY TL TRAC LOADER		RK37	R4	Front Left
320070044	10-16.6 6PLY TL TRAC LOADER		RK37	R4	Front Right
320070046	43X16.00-20 4PR TL TRAC LOADER		RK37	R4	Rear Left
320070048	43X16.00-20 4PR TL TRAC LOADER		RK37	R4	Rear Right