For the past 20 years, I have been able to supply BRAND NEW sets of 4 genuine Honda factory original ag tires and rims (2 front, 2 rear) for Honda RT5000s, H5013s, and H5518s as a complete set. (Ag rims and tires must be used together; ag tires don’t fit on turf rims and vice-versa.) Front ag rim is 4×12, rear ag rim is 5×12, front ag tire is 5×12, rear ag tire is 7×12. YES, they are the correct and original sizes! GUARANTEED NOT to ruin your transmission. Unfortunately, the manufacturer DISCONTINUED the REAR Ag rims in 2010. I have recently discovered that the rims from another Honda tractor will fit and work perfectly. They are almost visually identical. The main difference is that the substitute rims have a narrower offset, but are otherwise identical in fit and function. I have installed them on numerous tractors with perfect success. Unfortunately, the manufacturer DISCONTINUED the REAR Ag tires in 2015. I have recently discovered that the tires from another Honda tractor will fit and work perfectly. They are almost visually identical. The price listed below is for all 8 items; 2 front tires, 2 front rims, 2 rear tires, and 2 rear rims. Any of these are available individually, upon request. Front tires are $133.00 each. Rear tires are $235.00 each. Front rims are $101.00 each. Rear rims are $134.00 each. We apologize for the price, but we were just hit with a large price increase from Japan.