QINGDAO HENGDA TYRES CO.,LTD MANUFACTURES MANY SIZES OF AGRICULTURAL TYRE. We are a manufactory producing full range tyres ,including OTR ... tyres,heavy truck tyres ,light truck tyres,agricultural tyres and forklift tyres,we have got ISO-2008,certificate ... ........We provide you high quality and service.the size of agricultural tyre:23.1-26-12;18.4-30-10;16.9 ...