Tá dhá ghrád boinn ann, is é ceann amháin grád luais agus is grád ualach é an ceann eile.
Go ginearálta, feicfimid 91v nó 85h taobh thiar den mhúnla boinn.
91 and 85 refer to the load index of the tire, which is the maximum weight that the tire can bear.
