B6100 4x4 Front Agri tires

[B6100]

I am new to Orange world of Kubota and tractors in general but I seem to have lucked out with the B6100D 4x4 and loader I bought last week. The only problem I have is finding replacement Agricultural tires for the front end,
the OEM Bridgestone Farm Service Lug -W's seem to only be available in Australia and I don't know the what the Rolling Circumference was.
Any one know of a replacement available in Canada or US ??

 

[SuperCharged]

Mine are Carlisle Power Trac 6-12's. That will be the right circumference assuming you have 7-16's on the rear. Otherwise, I think your 4wd ratio will be off and the front will push or pull.

My local garage was able to get ag tires and mount them (I just did my rear tires), but they are easy to find on the Internet also.