目前里程17xxx，後輪已經快磨到安全線，前輪剩下比較厚一些，中間粗略估計應該還有三成左右（兩側磨的比中間快很多）。
原本預計希望可以跑到兩萬，但是幾天前左前輪被鐵釘刺破（剛好刺到鋼絲與棉絲的交界處），雖然已經補了起來，也跑了一百多公里平安無事，但也擔心是否會有安全上的問題，所以目前考慮提前換胎。
想請問各位先進：
1. 破的地方應該是補不牢的，保養廠、輪胎行也都告訴我破的地方不太妙，建議換胎。是否適合繼續用下去？有什麼該注意的地方？（補胎兩天後有在到輪胎行去做檢查，胎壓維持正常）
2. 如果要換胎，有什麼比較推薦的嗎？
原廠：原廠配的是TOYO，前225/45 17-後245/45 17。（報價前8xxx，後11xxx，總價四萬左右）。
輪胎行：考慮米其林Pilot Primacy，但PP沒有245/45 17的規格，如果要相同規格的Pilot sport也要11xxx。但由前後胎壁與地面的角度判斷，強烈懷疑前後的鋁匡是相同規格。這樣一來就可以使用Pilot Primacy前225/45 17-後235/45 17甚至是前後225的選擇。（報價225要6800，235要7400，總價28400未折扣）
雖然很喜歡原廠胎抓地力的表現，但實在是磨的太太太快了，不到兩萬公里就磨掉四萬塊實在是吃不消阿！所以希望可以換比較耐磨、低價的胎（最好兼顧安靜，原廠胎跑高速公路好吵＠＠）。想請問是否有其他也不錯的選擇呢？
although pilot primacy is noisy, but i think it will still be more quiet than your toyo.
my last set of tire was Pilot Sport A/S, it was an excellent set of tire. i used it for 40K miles (60K km) excellent grip, especially on wet. The only problem is noise, it is as laud as primacy.
My current set of tire is Pilot Exalto A/S. It is very quiet. still have lots grip on wet and dry road. According to Michelin, these set of tire should last about 45K miles, (70K km)
another good choice is Pilot Exalto PE2, this is the summer only version of Exalto A/S i am using. These should be very quiet and excellent grip. (better grip than Primacy, i think) but it will last around 20K miles only.
I don't know how wide if your wheel. but if it is the same as Lexus USA size, then your wheel is 17X8 all around. which means you can use 225 for all 4 wheels.
兩側磨的比中間快很多, maybe your tire was under-inflated. IS is heavier than normal small cars, you may need to inflate it more.
ps. my car is BMW 325I Sport Package. so quite similier to urs.
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