轮胎气压(Tyre Pressure)直接关系到行车安全、油耗表现以及轮胎的寿命。很多车主习惯盲目跟风,或者每次去油站充气时都随便选个数字。针对大马的用车环境——常年炎热、雨季多变、路况复杂,掌握正确的胎压标准至关重要。

每个车主都应该知道,最准确的胎压数值从来不是问别人,而是看你车上的原厂标准。
B柱上的原厂铭牌(Placard): 打开驾驶座车门,在车身B柱(安全带下方)通常会贴有一张标贴,上面清晰标注了该车型在不同载客量和车速下的标准冷胎压(通常同时有 PSI 和 kPa 两种单位)。
油箱盖内侧: 部分车型的胎压推荐值会贴在油箱盖内侧。
车主手册(Manual): 如果找不到铭牌,翻阅随车的手册最稳妥。

虽然具体数值因车型(轿车、SUV、MPV)而异,但在大马道路行驶的常见乘用车,冷胎压一般处于以下区间:
普通轿车(Sedan / Hatchback): 约 30 至 33 PSI(约 210 至 230 kPa)
SUV / 跨界车(Crossover): 约 33 至 36 PSI(约 230 至 250 kPa)
MPV / 重载车型: 约 35 至 40 PSI(满载时通常需要适当调高后轮气压)

刚跑完高速公路或行驶了一段距离后,轮胎温度升高,胎压自然会上升(每升高10度,气压可能增加1-2 PSI)。这时候测出的气压是偏高的,千万不要在热胎时放气,否则等轮胎冷却后气压反而会不足。
很多人以为大马天气热就要刻意把胎压打低,或者觉得“宁高勿低”盲目高压充气。
实际上,胎压不足不仅会让油耗飙升、胎肩严重磨损,还会在高速行驶时因过度生热引发爆胎;而胎压过高则会直接导致轮胎中央胎面过度磨损、抓地力下降,让车辆在过弯或刹车时容易打滑,弹跳感也会变强。
原厂给出的标准胎压已经将当地的气候和极端工况考虑在内,切忌盲目偏离。

许多车型的前轮和后轮原厂要求并不一样(尤其是前置发动机的前驱车,前轮负担更重),甚至在满载和空载时也有区分。建议根据B柱铭牌上的分项说明来调整。
轮胎本身存在自然的慢性漏气(正常情况下每月会损失 1 左右的 PSI),再加上大马经常下雨、温差变化,建议每个月至少检查一次胎压。

养成“冷胎充气”的习惯: 最好在早晨出门前,或者车辆行驶不超过 2 至 3 公里(且未暴晒)时去检测和补充气压,此时测得的数值最准确。

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