Tires R1 vs R4 Tires on 4120?

timb · Jan 5, 2005

That's a great point for comparison. I was setting my expectations for my 4710 based on our experiences with our '53 Ford NAA. (Also originally the wife's grandfather's, small world!) Probably very close to the size/weight of your 640. I found a big difference in 'marking' between the NAA (with calcium filled fairly fresh 12.8x28 R1s) and my 4710. The old Ford can pass over the lawn and usually leave very little in the way of tracks behind. Not so the 4710. I'd estimate the weight of the NAA as it is to be around 3500 lbs, whereas the 4710 with filled 16.9x24's and the 460 loader with HD bucket is probably up around 6000 lbs. Makes a big difference.

tillboy2001 · Jan 5, 2005

Oh ok. JD says the 4120 weighs approx. 3700 lbs. Add the loader and a few weights maybe. The 640 we have has front and rear wheel weights.

timb · Jan 5, 2005

Your 640 is supposed to be about 3000 lbs 'dry'. Add to that whatever wheel weights you've got mounted.

The 4120 is 3700 lbs as delivered, but the 400X and bucket will add 1000-1100 lbs, and you could add anywhere from 200-600 lbs of rear wheel weights, and 400 lbs or more of front suitcase weights. Even without filled tires, you could also be well over 5000 lbs - nearly 6000 lbs maxed out.

I wouldn't be surprised if your track mark results end up very simliar to mine. I'm not real concerned for my 'field' areas (or even the 'yard') but it is what it is.

tillboy2001 · Jan 5, 2005

Well I'm sure I'll be having so much fun I won't care anyway /forums/images/graemlins/laugh.gif

timb · Jan 5, 2005

You ain't wrong! /forums/images/graemlins/grin.gif

rb4410 · Jan 6, 2005

i am located in s/central pa and i also have some pretty steep grades to deal with,our ground is'nt so much clay but can be soft as i have alot of shade and it does'nt really dry out. i chose the R-4 tires for my 4410. i always have the loader on and have rear wheel weights,the machine seems to tread softly and i keep it in 4WD at all times and as long as i don't make super sharp turns the R-4's don't rip the turf up at all. they seem to be the best compromise and they also have the benefit of longer wear and also if you have alot of rocks as i do,the stiffer carcass sure comes in handy as far as puncture resistance. if you had alot of Ag duty i would use the R-1's,but for general purpose i don't think there is a better choice than the R-4's. good luck with you're decision,,,,,,,,,,,,,,

bugstruck · Jan 8, 2005

You might want to consider what the damage to the lawn will be with R-1 tires this time of year. Once the soil freezes and thaws (pops) it's real vulnerable. If you don't have any need to traverse that yard until just shy of Easter when the soil stabilizes you could go with the R-1's in dry conditions without too much damage. This time of year with thawing the R-4's are going to tear it up pretty good. Particularly in the swail areas of the yard. I've only got 7 hours on mine and one pass with R-4's through my swail area (you have one too) made a rather good mess. Didn't take long to figure it out. My soil is clay and rock with minimal top. Hard as a brick in the dry summer. The R-1's would be more beneficial if you into sod busting in soil conditions this time of year with total disregard to the spring repair work assuming your in the yard. I'm at just shy of 6,000 lbs. with my setup (excluding the BH) so I'm close in weight.

IMHO those photos depict an R-4 tire environment. Just keep them out of the pond. /forums/images/graemlins/smile.gif /forums/images/graemlins/smile.gif

Enjoy the toy!!