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气压 现在的大多数家用轿车都使用了无内胎的子午线轮胎，对于前驱车来说由于发动机、变速箱等重要驱动部件都压在前部，所之前轮有时看起来会有点瘪，但目测是不准确的，一定要用专用的胎压表测量。一般来说前轮的气压在2.0帕―2.2帕之间，(由于每辆车的作用和设计各有差异，所以最好参考使用说明书上标定的厂方数值)，夏天可以适当低一些。 石子 有些车主经常会听见自己的爱车在行驶时会发出“啪啪”的声音，但车用起来却也没有故障，这时您就要检查一下是不是有小石子卡在轮胎花纹里了。其实只要平时抽空用钥匙将胎面纹路里的这些小石粒挖出来，不仅会使轮胎的制动抓地更稳定，而且还避免了胎噪。 备胎 要想备胎起到真正应急的作用，平时就要重视对其的保养。首先，要经常检查备胎气压；其次，备胎要注意防油蚀，备胎是橡胶制品，最怕各种油品的侵蚀。轮胎沾油后，很快就会发生胀蚀，这会大大降低备胎的使用寿命。最后，备胎的寿命在4年左右，很多车主错误地认为备胎不用就一直是新的，其实过了4年即使备胎一次也没有使用过也要更换，否则备胎就成了废胎。
如果你对以下车友回答满意，请设置一个推荐答案！
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