Who makes R4 tires for the 3520?

[Nuru]

I saw both sets of R4s yesterday at the dealer. They were both made by Galaxy. The dealer said Deere has the right to change tire manufacturers, which is why the brand name is not stated. Basically the smaller R4s are 2 inches shorter and 1 inch narrower. The tractor width is 57.3-58.9 for the small R4s and 58.1-59.7 for the larger R4s. Ground clearance is 10.5 inches for the smaller R4s versus 11.6 inches for the larger R4s. The rear tires on the smaller R4s is 6 ply versus 4 ply on the larger R4s. The smaller R4s give more space for tire chains.

I decided to be cheap and ordered the smaller R4s, and I think i am glad as they are 6 ply versus 4. I like the shorter but don't like the narrower, oh well, maybe another excuse to get some Unverferth wheels that will make the width wider?