I have a Kubota B3200 I bought new 10 or 12 years ago. The original front rim is 7.00-12 and the tire size is 180/85D -12. This past weekend I found a pair of rims/tires off an older B7800, rim size 7.00-12 and the tire size is also 7.00-12. This set of rims/tires fit perfectly on my tractor. My...