呔鈴修補DIY分享(簡短版)

(English version at the bottom)

香港鋪頭做呔鈴修補好似唔多.. (可能我唔係點留意, 但freelance 既都唔少.). 有唔少人問我有冇做呔鈴修補. 我自己就從未做過呢樣野, 搞到我又想玩下, 所以就自己買左啲料試下..... 

手工點都肯定差啲, 因為我冇機器整. 只係靠對手用紗紙係咁磨, 磨番平個位之後再補. 補完之後再上色

 對於未試過補鈴既車主, 如果想補既話, 您就要預埋改色, 或者重新嘖過同一隻色啦. 因為日子耐左您條鈴原先既色會變的. 就算噴番同一隻色都會有色差.  

如果鈴邊位多個地方都需要修補的話, 好有可能要好長時間先搞得點. 因為仲要填番個位. 

不過就唔好搵我補啦, 因為我又唔似得其他做左咁多年既師傅補得咁靚, 有機會有少少突左啲補既位出黎. (除非您唔介意拎黎俾我玩). 

如果冇街出, 不妨可以自己試玩下. *最好拆左條呔出黎用砂紙磨, 就手啲. 所以如果您有打算想自己整, 您又咁岩又會換呔個陣您就可以順便搞埋.

下次會試下噴色, 到時再分享下.

------------------------------------------------

There are not many retail stores prvoide repair rim service. (or maybe I am not aware of it since I do not provide such service, but I am aware that there are some freelancers who provide such service). More ppl asking such service, and out of curiosity, I decide to try it out myself.

Surely not as great as those professional. I do not have any devices to help, only using sand paper

For people who have never patronize a store for rim repair service, there is a high possibility of a need to change the color of the rim (or simply "renew" the rim by spraying the same color) as the color may change after long service hours.

It may take a long time too if there are multiple places to repair.

But please do not look for me to get this service as I am just a first timer trying this for fun. (unless you do not mind letting me "playing" around with your rim.

If you have no places to go, why not trying it out yourself? *It's easier to rub the rim by dismounting the tire. If you happen to change tire, you could take the rim to rub before installation of new tire.

The next time I will try changing color of the rim.

輪胎介紹其實好難回答

今次內容幾複雜. 因為我唔係好識點樣整理番講重點. 內容係想講下點解咁難去答 "有咩呔好介紹", 同埋 "有咩呔抵玩" 呢啲差唔多既問題

---------------------------------------

"我想揀安全既呔, 咩牌子都得"

呔既性能當然係車主最關心既一樣野. 揀番啲出名既大牌子當然有信心, 但係咪代表其他所有呔都唔好呢?

其中一樣輪胎製造商係研發輪胎時會測試既野, 就係計算輪胎既咬地性能(係唔同既方向)

當輪胎失去咬地力, 您就會失去控制車既方向. 依照當時輪胎情況下, 輪胎咬地力失去之後既一剎那有機會係再番黎.

通常都會諗到係, 輪胎老化, 或者係該款輪胎性能唔夠好, 唔安全.

老化的確係失去咬地力既因素(大部分發生呢個情況都係). 但後者就唔一定.

每一款呔都有佢既咬地力既極限. 當您用多於條呔咬地力既極限, 部車就會失去控制. 至於點知自己已經去到呢個極限就有好多因素, 包括車款.

當然輪胎物料對於咬地力都好重要

但係另一方面都要知馬路上既物料係會影響到輪胎既咬地性. 因為當輪胎行駛係馬路上就會係之間產生左化學作用. 

所以您有機會有聽過, 歐洲製既呔唔岩您係香港用. 因為歐洲製既係俾番歐洲個邊既路上面用, 唔係俾香港既路上面用. 另外地區既溫度等問題都有影響.

輪胎像膠同馬路上既化學作用 (好似係叫 hydrogen bond, 我唔係好肯定. 唔會係ionic, 都唔會係convalent). 呢種既bonding 會令到輪胎粘住係路面上. 而影響到化學作用 (chemical reaction) 既常見因素如溫度, (e.g. 高溫會加快化學作用). 有時您都會聽到, 要令到條呔行到去最岩既溫度先發揮到個款呔既性能. (但過高會有反效果)

呢樣都解釋左點解唔應該係雨天渣快車. 因為路面會有一層水擋住像膠同馬路上產生既化學作用.

另外其他影響輪胎性能包括汽車配件....

所以我係答唔到"有咩呔好介紹", 同埋 "有咩呔抵玩". 如果有既話, 其實我唔駛放咁多牌子上網. 我直接賣一個牌子就夠. 

Tyre recommendation is not easy to answer

This topic is quite complicated in a way that I couldn't figure out how to summarize the points nor how to express the points clearly. The main point I want to bring out is...

it's difficult to recommend tyres model for you, especially when the question asked is 

"which brand and model is value-added / worth purchasing"

Keep reading if you are interested to know why.

---------------------------------------

"I wanted a tyre that is safe to drive, does not really matter which brand it is"

The tyre performance is the most important concern of all drivers. Choosing a famous brand is surely making one's mind better in driving. But does that imply other models are not good enough for driving?

One of the (mutual) things that all tyre manufacturers are working on with their tyres involve the calculation of tyre grip in all directions.

Once the tyre lost grip, you lose control of your car. Depending on your tyre condition, you may get the control back just right after you lost it.

Normally people would think that it is either the tyre ages or the tyre performance is not good (hence not safe to use)

While the primary is true to most of the situations, the latter may not be the case 

Each tyre has its limit and once you utilize beyond this limit,  your vehicle will start to lose control. How to tell if you reach this limit depends on a number of factors, including your vehicle type. 

Of course the materials of the tyre plays a very important role in the contact on the road.  

However, it is also important to look at the material used to create the road, in which also an attribute to the performance of the tyre because of the chemical reaction between the tyre rubber and the road.

Thats why you may have heard choosing a made in western tyres may not be suitable to you in Hong Kong as those are meant for roads in EU or the west, which may differ from the materials used in Hong Kong. And so as temperature, humidity, etc.

The material used in tyre form a bond with the road (I think it is hydrogen bond, I am not too sure. Not ionic, not convalent). The bond helps to stick your tyre on the road. Bonding is affected by common factors like temperature ( in which the higher temperature, the faster the reaction to form the bond ). Hence the reason (or point) you may have heard, to allow the tyre reach to the optimal temperature and better performance the tyre will give to you. (and too hot will destroy the bond instead)

This also explains why you should not drive fast in a rainy day or on a wet road as the water layer blocks the formation of bonding.

There are other things affect tyre performance, including your vehicle parts. 

I have no answer to "which brand / model is value-added or worth buying". Otherwise I will just sell that particular brand.

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Four Tire Information Misinterpret

  

1. The hair strand on the tire indicates tire wear off

I didn't actually find out about it at first as I know that it is not going to affect driving experience. Until when a customer told me that a technician told her about this hair strand tells you when to change your tyre.

Talks about experience, I may not have as much as those who have worked in this industry for even more than 20 years, but I know this is certainly wrong.

Why tire manufacturer create this "extra" features when all brands manufacturer have an international standard to tell users in the tread area and sidewall that the depth of the tread has reached 1.6mm.

But I fail to answer the purpose of this hair strand. So I check it out.

**According to the Hong Kong Traffic Ordinance, the legal requirement for the tire depth is 1mm. That implies, even if your tire reach this 1.6mm level, you can still use it (legally).... but do you really think you can even reach this 1.6mm tread depth?

Check out this post to find out how to use a coin to measure 1mm depth if you really manage to reach this 1.6mm

https://tyrehood.blogspot.com/2016/10/check.html

This hair strand is called "vent spews". In the process of manufacturing tires, pressure is added (same as the process of retreading tyre), but too much pressure will cause air mixing in the rubber. Hence, extra air pressure is released through this "vent spews"

2. Why new tires are not packaged

Packaging happened more than a decade ago. But most brands (or rather sole agent of the brands) do not require packaging due to the land pollution. Imagine how much trash is produced when more than 100 thousands tires packaging are thrown.

Afterall, packaging is not vacuum tight. It will not delay tire age. Just not easily dirty.

In addition, it is not easy to check if a tire is really a brand new tire (A brand new tire definition: The tire has not mounted into the vehicle. Even if it is mounted on the vehicle, a traveling of 1cm will lose the "brand new" identity). When a brand new tire is mounted onto the car, some of the coloring (like those yellow and red dot) do not come off right away.

3. Why there is not EU labeling for this tire? What is the value of the EU label for this tire?

EU label for the tire consists of sound, petrol efficiency, and wet performance of the tire. The EU label is meant for EU. That is understatement. It's not for Hong Kong, therefore not all tyres have such EU label with them. You can use the label as a reference, but this reference is not accurate to apply in Hong Kong because of weather, road conditions etc. (even both places are using asphalt as a material, the mixture, layer and mirco of the materials might differ)

Additionally, there is no standard in Hong Kong to use a reference for tire, it is not compulsory to have a EU label on the tire. When the tire is not export to EU, it does not have that EU label as well. Even if it does, not all tyres will have it stick on them.

So, it is not possible to answer the EU label value for each of the tire.

(A customer does not seem to believe this when he asked why, the Firestone tire that I sold to him, does not have the EU label)

btw, the EU label will change its regulation on 1 May 2021 onwards. The label design may change the next time when you purchase them.

4. UTQG (Uniform Tire Quality Grading)

UTQG is the U.S standard of the tire testing. It looks at Wear, traction, and Temperature. 

e.g. 

Sailun Elite Wear ->360, Traction -> A, Temperature -> A

Goodyear F1A5 Wear->300, Traction -> AA, Temperature -> A

Just like EU label, UTQG is for reference. And if you rely on UTQG and EU label testing reference, wouldn't Sailun is more a suitable brand for you to choose? (Since quite a number of ppl asking for recommendation, these data shows)

All tires export to U.S and EU require the manufacturer to print these data on the tyre, and they have the result on their database, it will not be possible to fake these data.

(It explains why Yokohama do not have UTQG for those made in Japan as they have factories located in Europe)

The myth of manufacture date

It is undoubted that every customers want the latest manufacturing date of the tyre. Who doesn't? Even if you purchase food in the supermarket, you probably choose the one with longer expiry date. 

Some may have heard "The tire has [expired], look at the manufacturing date. It's time to change"

If you saw the previous post, Michelin, Dunlop, Pirelli (and more) manufacturer mentioned that it is difficult to estimate if the tire has expired.

Afterall, the supplier inventory have "shelter" for the tires to keep them from exposing to rain.

A) The UK government decided to ban 10 year-old tire

Some other opinions mentioned about keeping it 3 years, 6 years. Some HK retailers also mentioned about 3 years.

So, do we really need the latest manufacturing date?

Followor Like Tyrehood facebook page to let me know that you are interested in tire issues. Then I will tell more about it in the next post.

四個輪胎資訊被誤解 Four Tire Information Misinterpret

 (English version below)

1. 呔上既"毛"係可以用黎判斷車呔仲用唔用到

其實呢樣野當初我冇研究. 因為我知呢樣野唔影響實際行車情況. 但最近有個客同我講話有位technician 話佢知呢啲"毛" (或者係咪叫頭髮) 係可以判斷條呔係咪仲行到. 如果啲"毛"甩左就係講緊條呔差唔多要換啦.

(我唔知中文叫咩... 呔毛? 呔髮? )

但係呢... 製造商唔唔會冇啦啦整到成條呔都係毛黎為左話俾人知個啲係用黎判斷輪胎仲用唔用得(真係整條毛). 特別係本身輪胎上面已經有指標話俾人知呔紋用到邊個位就差唔多換. 但我當時又解釋唔到呢啲係咩黎.... 

所有輪胎製造商造出黎既呔都會有呢個指標. 呢個指標代表現時輪胎深度係1.6mm (通常都好準)

香港既交通法例, 輪胎深度需要為 1mm. 即係您行到呢個位都仲可以繼續行.... 但係您估您真係可以行到呢個1.6mm位咩?

如果您咁好彩真係行到呢個位, 您都可以參考番之前出既 post, 點睇呔紋已經到 1mm.

https://tyrehood.blogspot.com/2016/10/check.html

直到之後... 知道係咩黎啦.

呢啲"毛"既有個名叫 "vent spews". 係製造輪胎過程中會輸入氣壓(番新呔其實都同一做法), 但過多既氣壓會令到有空氣夾住左係膠入面. 所以需要排出多餘的空氣時就產生左 "vent spews".

2. 點解新呔冇包裝 (好似買新電話咁)

十幾二十年前都仲會. 但而家好多牌子都可免則免. 因為包住咁多條呔另外拆晒出黎後都會製造大量垃圾. 仲要幾十萬條呔都咁拆.

由於唔係真空包裝, 唔會因為包住就令到條呔壽命加長. 最多只係冇咁易污穢.

至於點樣睇全新呔... 其實真係好難. (全新呔定義係, 未有裝過係車上行駛. 就算該輪胎裝左落車後行左1cm 既距離都係叫舊呔) 因為當新呔裝左上去部車, 有部分呔既呔肚位會有黃點紅點, 都冇咁快甩. 

3. 點解冇歐盟標籤EU label? 個款呔既EU label 個數值係幾多?

歐盟標籤, 睇個名就知係歐洲國家既標準去睇條呔既性能. 主要係聲音, 耗油, 同埋濕地性能. 歐盟標籤係俾歐洲國家用, 唔係俾香港用. 當然唔係條條呔都會有歐盟標籤. 您可以用黎做一個參考, 但係呢一個參考並不會準確. 因為天氣, 地面等情況同香港唔同. (雖然地面大家都用緊 asphalt 但都有分唔同既mixture, layer, micro etc)

另外, 由於香港係冇標準去睇, 當然唔需要有歐盟標籤, 就唔會款款呔都會有. 加上, 唔係款款呔都會出國去歐洲, 就算有, 間廠都唔會每一批生產既呔都貼上歐盟標籤. 更加答唔到您到底個數值係幾多.

(因為有個客好唔相信我, 問我點解Firestone 個條呔係冇歐盟標籤, 係咁既咩?)

btw, 歐盟標籤將會於2021年5月1號開始改變有關要求. 到時又會有唔同既標籤.

4. UTQG (Uniform Tire Quality Grading)

UTQG 係美國既輪胎測試標準. 有別於 EU 既係佢睇 損耗(Wear), 咬地力(traction), 溫度(Temperature). 

e.g. 

Sailun Elite Wear ->360, Traction -> A, Temperature -> A

Goodyear F1A5 Wear->300, Traction -> AA, Temperature -> A

UTQG 同EU label 一樣都只能做參考. 原來同頭先講既一樣. 但如果您相信UTQG 同 EU label, 咁仲唔係賽輪最底玩? (因為唔少人都會問有咩介紹, 咩底玩既呔, 而家有晒証明, 個數值差唔多, 唔係唔揀實輪掛?)

之後您又會再問一樣野, 會唔會做假.

所有輪胎出口到歐盟銷售必須要有 EU label, 美國銷售就必須要有 UTQG, 似照番佢地既標準去測試. 測試後數值係會保留係佢地既運輸處既 database, 仲可以做到假咩? 

(所以您都係唔會見到 Yokohama 係有UTQG, 因為日本製既呔唔出口到美國, 另一邊有歐洲製既Yokohama)

如果只係睇呢兩個標準, 事情就簡單. 不過Engineer 既野又點會咁簡單. 

一定要用最新既製造年份?

每一個消費者都想要新年份既呔. 有邊個唔想. 就算去超市都會揀番個冇咁快過期既食物. 更何況係用係部車到既呔.

由於唔少都有聽聞過, "由製造年份計起, 去到某幾年就要換嫁啦, 條呔老化嫁啦"

如果有睇到上一個post, Michelin, Dunlop, Pirelli 等輪胎製造商既網站都有提及到, 根本係好難去作出預算去計幾時真係老化 (Oxidation). 

再加上香港既輪胎供應商都有個 "有蓋既倉" 擋風擋雨擋太陽. Keep 好存貨.

由於輪胎冇 "幾時過期" 呢樣野, 一於睇睇唔同既參考睇睇.

A) 英國政府係2020年7月決定唔俾大型車輛, 包括小巴, 使用已經超過10年既輪胎

英國其中都參考左Michelin 所提及到既, (tyres should be replaced after 10 years)

其他好多唔同意見, 都圍住 3年, 6年. 香港都有其他鋪頭講3年. 

咁到底係咪一定要最新? 一定要當年既製造年份先最好? 

-----------------------------------------

  

1. The hair strand on the tire indicates tire wear off

I didn't actually find out about it at first as I know that it is not going to affect driving experience. Until when a customer told me that a technician told her about this hair strand tells you when to change your tyre.

Talks about experience, I may not have as much as those who have worked in this industry for even more than 20 years, but I know this is certainly wrong.

Why tire manufacturer create this "extra" features when all brands manufacturer have an international standard to tell users in the tread area and sidewall that the depth of the tread has reached 1.6mm.

But I fail to answer the purpose of this hair strand. So I check it out.

**According to the Hong Kong Traffic Ordinance, the legal requirement for the tire depth is 1mm. That implies, even if your tire reach this 1.6mm level, you can still use it (legally).... but do you really think you can even reach this 1.6mm tread depth?

Check out this post to find out how to use a coin to measure 1mm depth if you really manage to reach this 1.6mm

https://tyrehood.blogspot.com/2016/10/check.html

This hair strand is called "vent spews". In the process of manufacturing tires, pressure is added (same as the process of retreading tyre), but too much pressure will cause air mixing in the rubber. Hence, extra air pressure is released through this "vent spews"

2. Why new tires are not packaged

Packaging happened more than a decade ago. But most brands (or rather sole agent of the brands) do not require packaging due to the land pollution. Imagine how much trash is produced when more than 100 thousands tires packaging are thrown.

Afterall, packaging is not vacuum tight. It will not delay tire age. Just not easily dirty.

In addition, it is not easy to check if a tire is really a brand new tire (A brand new tire definition: The tire has not mounted into the vehicle. Even if it is mounted on the vehicle, a traveling of 1cm will lose the "brand new" identity). When a brand new tire is mounted onto the car, some of the coloring (like those yellow and red dot) do not come off right away.

3. Why there is not EU labeling for this tire? What is the value of the EU label for this tire?

EU label for the tire consists of sound, petrol efficiency, and wet performance of the tire. The EU label is meant for EU. That is understatement. It's not for Hong Kong, therefore not all tyres have such EU label with them. You can use the label as a reference, but this reference is not accurate to apply in Hong Kong because of weather, road conditions etc. (even both places are using asphalt as a material, the mixture, layer and mirco of the materials might differ)

Additionally, there is no standard in Hong Kong to use a reference for tire, it is not compulsory to have a EU label on the tire. When the tire is not export to EU, it does not have that EU label as well. Even if it does, not all tyres will have it stick on them.

So, it is not possible to answer the EU label value for each of the tire.

(A customer does not seem to believe this when he asked why, the Firestone tire that I sold to him, does not have the EU label)

btw, the EU label will change its regulation on 1 May 2021 onwards. The label design may change the next time when you purchase them.

4. UTQG (Uniform Tire Quality Grading)

UTQG is the U.S standard of the tire testing. It looks at Wear, traction, and Temperature. 

e.g. 

Sailun Elite Wear ->360, Traction -> A, Temperature -> A

Goodyear F1A5 Wear->300, Traction -> AA, Temperature -> A

Just like EU label, UTQG is for reference. And if you rely on UTQG and EU label testing reference, wouldn't Sailun is more a suitable brand for you to choose? (Since quite a number of ppl asking for recommendation, these data shows)

All tires export to U.S and EU require the manufacturer to print these data on the tyre, and they have the result on their database, it will not be possible to fake these data.

(It explains why Yokohama do not have UTQG for those made in Japan as they have factories located in Europe)

The myth of manufacture date

It is undoubted that every customers want the latest manufacturing date of the tyre. Who doesn't? Even if you purchase food in the supermarket, you probably choose the one with longer expiry date. 

Some may have heard "The tire has [expired], look at the manufacturing date. It's time to change"

If you saw the previous post, Michelin, Dunlop, Pirelli (and more) manufacturer mentioned that it is difficult to estimate if the tire has expired.

Afterall, the supplier inventory have "shelter" for the tires to keep them from exposing to rain.

A) The UK government decided to ban 10 year-old tire

Some other opinions mentioned about keeping it 3 years, 6 years. Some HK retailers also mentioned about 3 years.

So, do we really need the latest manufacturing date?

Tyrehood 聖誕節禮物 Christmas Present

(English version at the bottom) 

為感謝Tyrehood 客戶一直的支持, Tyrehood 想送番份聖誕節禮物俾大家. 

客戶需於2018年開始直到2020年12月26日, 已經購買4條輪胎或以上, 經網上訂購(包括經whatsapp 51130668 Jimmy 訂購). 

詳細有關禮物資料請禁入去 Tyrehood Zone 手機apps 入面既 資訊(Info Center) , 再禁入去 Tyrehood 消息及文章 (Tyrehood News and Articles) 有關詳細.

未下載apps 既Tyrehood 客戶記得下載番, 開番個account 再whatsapp 俾 51130668 Jimmy 啦.

祝大家聖誕節快樂.

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To thank Tyrehood customers support since the opening of the store, Tyrehood want to give you a christmas present this year.

This present is for customers who purchase at least 4 tyres or above since 2018 until 26th Dec 2020, via Tyrehood website or from Jimmy

For detail, please click into Tyrehood Zone app , Info Center -> Tyrehood News and Articles for more details.

If you have not installed the app, remember to install it and create an account.

Merry Christmas and Happy New Year