(English version below)
電動車越出越多, 電動車(EV)輪胎都越出越多. 買左部電車番黎玩左排, 被人sell 話要買番電動車輪胎先岩用? 還是自己覺得一定要用番同款先岩用?
不如睇下您對電動車輪胎有幾了解....
🚗 電動車輪胎聲稱先岩用係電動車?
好多年前當 Tesla 係香港賣 Tesla Model S 個陣 (即當時100%免稅無上限), 所原配既輪胎係Michelin Pilot Sport 3/4 及 Pirelli Pzero. 並非 EV輪胎. 但當年既車主投拆既係輪胎損耗太快. 多年內, 好多 Tesla 車主都試過唔同牌子既普通呔, 雖然有啲牌子係比較耐用, 但最多都係用多幾個月至半年. 但直至現時電動車輪胎已經出現, Model S 車主都並非所有有意轉向 EV 呔. (岩岩最近有個客裝左黎試).
Model 3 同 Y 出現後所原配既EV輪胎, 有啲人覺得好唔掂, 有啲人覺得冇乜野. 當年頭個班新車落地後仲即時換晒4條 普通輪胎. (最近兩年新車落地現時已經沒有呢個現象).
所以唔存在, "電動車一定要裝電動車輪胎". 更唔存在 "一款輪胎只岩用一款車上"
🔱電動車輪胎先夠承重裝係電動車
以 255/45 R19 為例,
EV呔
原配Hankook 承重為 104
Kumho HP71 EV 呔承重為 104
賽輪 Erange EV 呔承重為 104
普通呔
Falken FK510 承重為 104
Michelin PS4 SUV 承重為 100
普通呔有個係100 咪少左囉? 少左又係咪唔岩用? 先唔講計數 (都唔諗住係呢到講計數)
再睇下另一個尺寸, 255/40 R20 (都係裝係同一部車上)
EV呔
原配 Michelin PS EV 呔承重為 101
賽輪 Erange EV 呔承重為 101
普通呔
Falken FK520 承重為 101
唔想承重由高變底? 其實有冇咁大既需要先? 您部車又唔係van 仔.
其實香港輪胎市場雖然係細, 供應商拎貨自然唔會拎太多唔同款式番黎. 從而配合番現有香港汽車最底所需的承重.
📊電動車輪胎耐用過普通呔?
按道理上應該係耐用過普通呔. 睇番美國U.T.Q.G 標準下按理上個受磨損程度都係高過一般輪胎. 無理由整左新款出黎最後結果都係一樣吧? 特別係條呔仲要貴過同牌子既其他款.
耐用係首選既話, 應該係揀 EV 呔.
但價錢 > 耐用既話, 就一係揀 韓國EV 呔 (e.g. Kumho, Hankook)或 賽輪, 一係揀番普通呔.
又要想耐用要EV呔, 又要想用大牌子 米芝蓮, Yokohama, 石橋, 又要想價錢平到好似 大陸呔價錢咁, 港車北上係中國珠海裝中國製既輪胎一定岩您.
(呢個係不爭的事實, . 當然都需要諗緊對應方法.)
但耐用啲, 會有啲咩唔同? 以同尺寸 (255/45 R19) 睇,
PS EV 好似真係令耗電量減底, 岩晒EV車.
Michelin PS4 SUV , 濕地性能係 A 級, 相反
Michelin PS EV 濕地性能係 B 級.
反而EV呔既濕地性能仲底過普通呔?
之後某啲EV車主 又會諗, 想要耐用, 又想要安全, 又想要咬地. 一定係 Michelin 唔好.
有冇資料可以比較其他同牌子? 我搵唔到. 但肯定唔會有, 要耐用, 要靜, 要咬地, 要安全, 要濕地好, (仲要平).
我個人認為安全係司機能夠控制的問題是並非只是輪胎. 您睇下意外發生既詳細就可以了解更多.
🌐電動車輪胎靜過普通呔?
睇番上面兩個 PS EV vs PS4 SUV, 兩者既嘈音都係B 級水平. 不過 PS EV 大部分都有配有靜音綿, 正常行駛下通常有靜音綿都係靜過 PS4 SUV, 呢個係不能夠以歐盟標籤去分出EV呔係咪同普通呔一樣靜. 但如果兩者之間都冇靜音綿的話, 就說得通兩者之間一樣聲音.
但並非所有電動車呔都配有靜音綿. 即使輪胎有標記為 T0, T1 等(以表示該輪胎專給予tesla車用), 都未必有靜音綿.
靜音綿係電動車輪胎未出之前已經一早配係普通輪胎. 當中包括舊款的Tesla Model S 及 其中一款(?) Benz.
(可以睇本人既實驗: https://tyrehood.blogspot.com/2020/07/the-sound-proof-tire-does-it-really.html )
❓ 邊一款呔先岩我部電動車用
又係個句: 試. 冇啦. 您個朋友話呢款呔好, 個款呔好, 但最後渣個部車都係您自己. 你朋友話 Michelin Pilot Sport 5 好咬地, 岩您. 但你其實需要既係俾到長途舒適及靜既 Michelin Primacy 4 +
買錯呔裝左好差性能咁點算? 輪胎市場永遠都係一分錢一分貨. Michelin 係貴但一定俾到足夠信心. 韓國Kumho, 或中國牌子賽輪係平, 但唔一定差. 可能您的技術根本唔需要咁高要求買貴呔.
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(English version below)
More varieties of Electric Vehicle coming up, more Electriv Vehicle (EV) tyre appears as well. You got a EV, and was told that only EV tyre is suitable for your vehicle? Or you believe that the same model as Originally Equipped (OE) should be the best?
Let's find out more about electric vehicle tyres....
🚗 Electric vehicle tyres is only suitable for EV?
Some years ago when Tesla sold its Tesla Model S in Hong Kong (100% tax exemption without limit), its OE is Michelin Pilot 3/4 and Pirelli Pzero, not EV tyre. Many complaints about its durability, and change to different tyre models. Some models are more durable, but none can go extra more than a year.
With EV tyres are more common now, Model S vehicle owners are still keeping their normal tyres on them. (just recently got one started to try out)
With the release of Model 3 and Y OE with EV tyres, some dislike and quickly replaced all four to normal tyres. (but these years do not see such batch of people replacing all 4 tyres when they get their v ehicles)
Hence, "EV must install EV tyres" does not hold water. so as "one tyre model only suitable for one vehicle model"
🔱 Only EV tyres can support EV
In the instance of 255/45 R19
EV tyre
Original Equipped Hankook loading index is 104
Kumho HP71 EV loading index is 104
賽輪 Erange EV loading index is 104
Normal tyre
Falken FK510 loading index is 104
Michelin PS4 SUV loading index is 100
One of the normal tyre loading index is 100. Less than 104 does it mean it is not suitable to install? Let's look at another size which is also original equipped with the same vehicle. (No calculation will be mentioned in this article)
EV tyre
Original Equipped Michelin PS EV loading index is 101
Sailun Erange EV loading index is 101
普通呔
Falken FK520 loading index is 101
You don't want the loading index of the tyre lower than your original equipped one? Think about it, do you really need that much loading. Your vehicle is not a van.
In fact, the Hong Kong tyre market is too small such that suppliers will not import too many varieties models, which in turn only import tyres that suits Hong Kong vehicles.
📊EV tyre is more durable than normal tyre?
Theoretically speaking it is MORE durable than normal tyres. Refer to the U.S. U.T.Q.G standard, its treadwear is higher than normal tyres. Afterall, EV tyre is more expensive than normal tyre, it should should have something special about it.
For durability, EV tyre should be the first choice.
But price > durability, that will be either made in Korea Kumho, Hankook, or Made in China Sailun , or normal tyres.
But you want durable EV tyres and still want top few brands and its price must be as low as China brand tyres. You should go China to change made in China tyres via NorthBound travel.
(This is an understatement that China market products are way cheaper than Hong Kong market, which require a better strategy to compete with them. )
With the same size 255/45 R19,
PS EV is not just durable, but also EV efficient. very suitable for EV.
BUT.
Michelin PS4 SUV , wet performance is A, against
Michelin PS EV wet performance is B
EV tyre wet performance is lower than normal tyre?
There comes the thinking that someone will want more durable, safety, high traction. It must be Michelin is not up to your standard.
I couldn't find more information about other brands with different models comparison. However, it will not have "durable, quiet, high traction, safe and wet performance must be good." (and must be cheap.)
In addition, I believe safety is controlled by the driver rather than the tyres nowadays. Look at the accident details and you will know why.
🌐EV tyre is quieter than normal tyres?
Look at the above comparison between PS EV and PS4 SUV, both are ranked at B Db level. But most PS EV contains acoustic cotton that makes PS EV low noise than PS4 SUV. This cannot be determined by EU label. However, if both are without acuostic cotton, judging from the EU label both models should be about the same noise level.
Yet, not all EV tyres come with acoustic cotton. Even if tires are marked T0, T1 etc (which indicates it is approved for Tesla equipped) are not necessarily mean they have acoustic cotton.
Acoustic cotton appeared in the market way before the release of EV tyres. The tesla model s (those old models), and one of the models for Benz, their OE tyres are with Acoustic cotton.
(check out my DIY : https://tyrehood.blogspot.com/2020/07/the-sound-proof-tire-does-it-really.html )
❓ which model is suitable for my EV?
Still the same, "try". Your friend told you that this model is good. But you are the one who drives on the road. Your friend told you to use Michelin Pilot Sport 5 with very good traction. It suits you. But you actually need a Michelin Primacy 4+ that offers you comfort and silent in a long journey.
Afraid of purchasing the wrong model? In the tyre industry, price determines its performance. Michelin is expensive but it surely can offer you absolute confidence. Korea brand e.g. Kumho, or China brand like Sailun might have low price, but this does not mean it has bad performance. Afterall, your skill does not necessarily mean you need to purchase a top brand for your requirement.
