原來:米奇林PSS輪胎?胎壓才是最大關鍵!!!!!!

什麼車?
鼠人8之飛天遁地 wrote:
誠心請教底盤達人PS...(恕刪)

ECOTY2009 wrote:
什麼車?...(恕刪)


B5 RS4

謝謝啦
小弟剛好最近換上PSS,我的車重1600kg以上,
前輪245/40/R19
後輪275/35/R19
BMW原廠建議值從32到42(依照乘坐人數不同)

一開始胎壓打前後都是38,感覺轉向非常犀利,
但路感太明顯顛玻,感覺太硬了...

後來跑去調整前後都是36,感覺變好了,
不會這麼敏感,而且轉向依然很清楚。
但我還是覺得稍硬了一點。

再去調整成前34後36
讓前輪胎胎壓再降2psi
終於調到我要的感覺,輪胎Q而且不死硬。

所以多人把胎壓調高會有操控變好變輕盈的感覺是正確的,
因為胎壓高,輪胎變得比較硬,轉向自然靈活輕盈,
所以會有操控變好的感覺,就像如果大家小時候有開過小朋友的玩具車就知道,
小朋友的玩具車輪胎基本上是硬橡膠,所以轉向非常輕盈,
所以問題來了,這樣的錯覺卻無法讓你認知到抓地力!!!
你認為玩具車硬輪胎的抓地力會好嗎???當然不好(玩具車好玩而已不需要抓地力),
因為輪胎沒有彈性!所以胎壓調高轉向雖然並輕盈,但抓地力變差是確定的事實!!!
因此大家需要有這樣的認知,當然胎壓到底多少才是正確,
我們不可能一天到晚因為乘座人數或者速度的高低去調胎壓,
所以建議還是實際感受一下比較重要,
我只是提醒各位操控轉向變輕盈與抓地力之間要取一個平衡點,
轉向輕盈可以明顯感受到,但抓地力是比較難去感受的,
不過各位還是可以去想像軟軟黏黏的輪胎抓地力比較好相對的轉向就比較重比較黏,
相對硬梆梆的輪胎轉向比較直接犀利,但抓地力一定會比較弱,這點不可以不清楚。

我自己對硬梆梆的胎壓會感到沒有安全感,所以調來調去,
最後降到前34後36(因為後輪胎35比較扁)。
當然我也會擔心胎壓太低容易把鋁圈變形...@@

以上經驗供各位參考:)





有點難找, 這個試試看, 他可以換胎查胎壓. 不過是德文, 不懂可以猜一下或用翻譯的.

http://www.conti-luftdruck.de/

鼠人8之飛天遁地 wrote:
B5 RS4謝謝啦...(恕刪)
yau1234 wrote:
小弟剛好最近換上PSS...(恕刪)




胎壓高不等於抓地力不好,輪胎的抓地力,取決於橡膠材質配方與排水紋,搭配輪胎工程師所測試出的,最適切該型號胎壁軟硬度~~~~

概略來說:普利司通 登陸普 橫濱 倍耐力 這幾間所設計出的,性能胎胎壁都是偏硬!

只要打32psi 就跟 PSS 的 38psi 的感覺相近~

相反歐洲車常用的,米其林,馬牌,固特意,卻都是軟趴趴的。(軟真的抓地力好嗎)?

各輪胎廠的防爆胎更不用說了,每條都硬的跟石頭一樣,難不成就抓地力差 ??

車身彈跳的回饋,取決於避震器的效果,使用低胎壓只是讓避震器緩衝時間變長~

(荷重胎~XL胎) 胎壓還是不要太低,以免浪費了這個型號的美意~~~~


老話一句!自己測試過就可~~~自己開車的感受最重要~~~~



節錄自 Tire Rack, 胎壓過高的壞處有, 但至少不會 over heat to failure.
"Correct tire inflation pressure allows drivers to experience tire comfort, durability and performance designed to match the needs of their vehicles."

Disadvantages of Underinflation 胎壓不足的壞處
An underinflated tire can't maintain its shape and becomes flatter than intended while in contact with the road. If a vehicle's tires are underinflated by only 6 psi it could lead to tire failure. Additionally, the tire's trade life could be reduced by as much as 25%. Lower inflation pressure will allow the tire to deflect (bend) more as it rolls. This will build up internal heat, increase rolling resistance and cause a reduction in fuel economy of up to 5%. You would experience a significant loss of steering precision and cornering stability. While 6 psi doesn't seem excessively low, remember, it usually represents about 20% of the tire's recommended pressure.

Disadvantages of Overinflation 胎壓過高的壞處
An overinflated tire is stiff and unyielding and the size of its footprint in contact with the road is reduced. If a vehicle's tires are overinflated by 6 psi, they could be damaged more easily when running over potholes or debris in the road. Higher inflated tires cannot isolate road irregularities well, causing them to ride harsher. However, higher inflation pressures usually provide an improvement in steering response and cornering stability up to a point. This is why participants who use street tires in autocrosses, track events and road races run higher than normal inflation pressures. The pressure must be checked with a quality air gauge as the inflation pressure cannot be accurately estimated through visual inspection.
omega000777 wrote:
胎壓高不等於抓地力...(恕刪)
最近PSS是否缺貨!!
小弟跟臺中市大家常推的米其林輪胎行
訂了前235/40/18及後255/35/18
從3月底到現在~~老闆一直說前輪到了!
但後輪還沒到貨~~
到底怎麼了~~~
我也是米寶愛用者cayman s要換胎就換了PSS,原廠胎壓前後標準設定29-30,如要打到38以上這如何是好???
回覆樓上我訂了一個月才到貨

dknyling wrote:
最近PSS是否缺貨...(恕刪)

打電話去鎰錩問問吧!
我上個月才去換了4條PSS
感覺沒缺貨啊!建議多問幾家看看

黑點點07 wrote:
我也是米寶愛用者cayman...(恕刪)




照原廠建議的30psi胎壓開個幾天,然後再去四輪都打到38psi開個幾天

自然你就會知道哪種胎壓適合你喔~~

夏天冷熱胎壓會有 4psi~5psi 的上昇幅度

(有裝胎壓偵測器,就會知道我說的意思)

就算只打30psi,只要大熱天開出去,熱胎壓還是變成35psi

所以,自己感受一下吧~不舒服,不喜歡,再調回原來壓力不就得了~~~


(米其林PSS 輪胎最大壓力設定 51PSI )
評分
複製連結
請輸入您要前往的頁數(1 ~ 19)