原廠建議14 15吋前輪胎壓2.2(220)等於32PSI 後輪2.0(200)等於30PSI
我升級16吋 那前輪要多少? 後輪要多少?
胎壁上也沒寫胎壓上限值
從我上次保養到現在快三個月 我量胎壓前輪34PSI 後輪33PSI
艾莉堤 wrote:
原廠建議14 15吋(恕刪)
先打原廠的建議值,畢竟每部車的車頭,車尾重量都不同,
https://www.goodyear.com/en-US/learn/tire-care-maintenance/tire-air-pressure
Recommended Tire Air Pressure
Goodyear recommends that tires be inflated to the vehicle manufacturer's recommendations as found on the Vehicle Tire Information Door Placard or the Vehicle's owner’s manual. The placard can be located on the door edge, doorpost, glove box, or fuel door. The recommended PSI should not be confused with the maximum cold inflation pressure that the tire is rated to hold, which is found on the sidewall.
Goodyear 也是建議打到車廠對該車型的建議值
如果對原廠建議沒信心,你可以比較 5000~10000 km 前後輪胎磨耗的程度來調整, 每個輪胎的胎面 外, 中,內 量胎溝深度,如果磨耗差異很小就是正確胎壓,如果外,內 磨比中間多,就是胎壓不足,反之是胎壓過高
如果你的胎扁平比很高,像我的胎是235/35 R19, 我很怕撞坑使鋁圈變形,除了閃洞就是要盡量保持正確胎壓,原廠建議打 36 psi, 我打 37 psi,而且幾乎 1~2周補一次氣,胎壓最低不會低於 35.5 PSI, 只要要跑長途,我一定會補到 37 psi,四年多觀察下來,磨耗很均勻
另一部車,原廠建議打 33 psi,換新胎輪胎店給我打 36 psi, 跑高速公路十一直有個震動的雜音,後來我發現是胎太硬,柏油路的小孔傳給車身的震動,導致天窗會有個雜音,時有時無很煩人,但只有時速 80~90 會發生,後來我改成原廠建議胎壓就好了
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