Your jacket is rubbing against the front tire of your bicycle.
ーI think your shirt is hitting your bicycle tire.
「シャツが自転車のタイヤに当たってるよ」
your 〇〇 is hitting your bicycle tire で「〇〇が自転車のタイヤに当たっている」と言えます。
ーYour jacket is rubbing against the front tire of your bicycle.
「ジャケットが自転車の前輪に擦れてるよ」
your 〇〇 is rubbing against the tire of your bicycle で「〇〇が自転車のタイヤに擦れている」
front tire で「前輪」
ご参考まで!