2020年12月10日星期四

Five Questions Related to Tyre Issues

Most of the questions are related to the following, it will be good to know more about it.

1. Tyre depth looks like it is still usable
Some may still talk about it. The depth of the tyre that looks still usable does not mean it really keeps your car running as the rubber will age, thus causing a drop in traction performance, especially during wet condition.

2. How long will the tyre age? 
Two years? Three years? Five years?


[Source: Michelin website]


But most of the manufacturers will say, "It varies"


 [Source: Dunlop website]

[Source: Michelin website]


"Estimating the duration of a set of tyres is a much more complex affair" [Source: Pirelli website]


"No idea" is actually a correct answer


3. Tyre Warranty

Authorized Official Tyre has warranty, for the following brands:

Kenda - 12 months warranty
Tyre sidewall or other areas has a bulb or ball shape due to tyre quality issue. (require further checking if it is because of quality issue). Sole agent will deliver a new one for you. (Tyre puncture is not included in this warranty)

Dunlop - 12 months warranty
I did not check in detail. You got to ask them.

Continental - 180 days warranty
Within 180 days or a certain mileage, if the tire has a bulb due to quality issue, sole agent will deliver a  new one for you. 
"tire puncture is also included in the warranty" -> I am unsure if this term is still valid. You got to ask them.

Goodyear - 180 days warranty
Within 180 days or a certain mileage, if the tire has a bulb due to quality issue, sole agent will deliver a  new one for you.

For other brands, there is no specific warranty being mentioned. However, you could request for checking the quality issue, especially if the tire has a bulb after you just installed. The cumbersome point is the tire is needed to deliver to their office for checking. If quality issue is found, they will deliver a new one for you.

Anyway, the sole agents will not pay for the "labor fee". You need to ask the retail store if there is any "labor fee" incurred for replacing and/or deliver to the sole agent for checking

4. Can it be fixed if the tire has a bulb

It is unable to fix the bulb as it is caused by broken lining in the inner tyre. 


Anyway, could you avoid kicking the bulb?
At least, not in front of me. I do not want to witness the bulb suddenly burst and injure yourself.

If you have not seen how the bulb will burst, I can share some photos and videos.


5a. Tyre sidewall damaged (no air leaks), can it be fixed?


Most has raised up this question if this part can be fixed. But before that, something needs to be taken note that, 

According to the Hong Kong Road Traffic Regulation, tire that has a cut exceed at least 25mm should not be mounted on any vehicle. (subject to changes if the ordinance is amended)
But it does not mention whether it is still consider legal if the cut is "repaired". The same rule applies to vehicle inspection.

If you can fork out money, it can be "repaired". But the tire needs to be dismounted, and it may take longer than a day to "repair". The cost may even be higher than purchasing a new tyre.

Either you ignore it, or you purchase a new tyre. Do not ask me the cost of patching it up as I do not have such service.


5b. Sidewall has a puncture

I mentioned about internal patch previously. After experimenting, I decide to delete that post and write a new one about this.

Internal patch is not a sure-fix way to patch the sidewall puncture. If it stops leaking, you could still use it but purchase a new one should be the only option that you have in mind.


[Source: Michelin website]

Basically all the tire manufacturer will tell you to purchase a new one if the sidewall is damaged.



If you have purchased at Tyrehood online, remember to install the latest Tyrehood Zone app and create a account, and let me (Jimmy) know about it. I will update your account such that you can access Tyrehood customer only functions.





五個常被問有關呔既問題 Five Questions Related to Tyre Issues

(English version below)

通常一問到呔, 好多時都會圍住個幾個問題, 了解多啲

1. 啲紋仲好深, 仲用到.
深紋都唔代表住仲可以用. 因為膠會老化, 咬地力大減, 特別係濕地上. 不能只睇紋去判斷是否仲可以用.

2. 幾時會老化? 可以頂到幾耐?
2年? 3年? 5年?

以5年時間為指標 [Source: Michelin website]


但差不多所有輪胎製造商都會講. "It varies" (視情況而定)


不能準確得知輪胎壽命 [Source: Dunlop website]

無法得知一條呔可以實際用到幾耐 [Source: Michelin website]


計算出輪胎可以用幾耐係更加複雜 [Source: Pirelli website]


"唔知" 其實真係一個答案黎的.


3. 輪胎有冇保養

現時行貨保養有

Kenda (建大) - 12個月保養.
輪胎呔壁等位置(因質量問題)凸起 ("即生仔"), 可以更換全新輪胎. (需要檢察是否因質量問題). 中釘漏氣等問題不受呢個保養入面.

Dunlop - 12個月保養
冇詳細了解, 車主需要另外問問佢地.

Continental (馬牌) - 180日保養.
180日內 或 (唔記得左幾多里) 內, 若出現 "生仔"等質量問題, 可以更換全新輪胎.
"另外若中釘都可以受保" <- 呢個唔知仲有冇, 車主要自己另外再問.

Goodyear - 90日保養
90日內 或 (唔記得左幾多里) 內, 若出現 "生仔"等質量問題, 可以更換全新輪胎.

其他牌子就冇特別提及到有關保養問題, 但其實您裝左冇幾耐就 "生仔" 既話, 就需要拆條呔出黎俾佢地檢查, 發現係質量問題就會賠番條呔俾您. 

不過以上所有保養既共同點係... 裝拆費用係另計的. 費用就要車主自己問番賣俾您既輪胎店.

4. 呔生仔補唔補到

因為係輪胎入面既鋼線斷裂, 特別係打氣個陣先會見到出現"生仔", 特別係呔肚位. 所以係補唔到.



但車主可唔可以, 唔好見到 "生仔" 個位就用腳踩落去睇下有冇問題呢? 
至少都唔好係我面前踩. 我唔想睇住個位突然俾您整爆, 整傷您隻腳. 
您未見過佢點爆, 睇左相, 仲有video 您就知點解我唔想您地咁做.


5a. 呔肚位有破損或受損(冇漏氣), 補唔補到


呢個應該係最多人問既問題. 未答補唔補到之前, 先講講一樣野.

依照交通條例說明 (暫時係我寫呢個post 都仲係, 之後仲係唔係都可以睇番運輸署), 任何車輛的輪胎都不能有切割口超過25毫米的長度. 

但冇提及如果"補" 個個位, 仲算唔算係都仲係叫"切割口". 驗車都係. 因為驗車都係跟番交通條例. 

咁至於呢個位係咪可以 "補".... 您俾得起錢, 係真係得既. 但大前提係要拆條呔出黎. 仲可能要超過一日既時間. 搞搞埋埋, 個費用仲可能貴過您買一條新呔.

如果您出現呢個情況, 不如唔好理佢吧. 睇完呢個post都唔好問我真係補要幾錢, 因為我唔補呢啲.

5b. 呔肚位爆呔漏氣

之前有提及到補呔唔係間間都補到, 並提及到內補既問題. 
經過多次實驗後, 決定delete 左之前個post 係呢個從新寫過.

內補並不是萬能. 特別係呔肚位. 補到咪繼續玩多陣, 但基本上您都要預左買番條新呔.

[Source: Michelin website]

基本上所有 輪胎製造商都會講, 如果您條呔係呔肚位中釘漏氣, 都不能修補並需要更換.


如果您經Tyrehood online 方式購買, 記得下載番 Tyrehood Zone 手機apps, 再whatsapp 番俾Jimmy 知, 我會update 番您個account, 先可以用到apps 入面既所有功能.

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

Most of the questions are related to the following, it will be good to know more about it.

1. Tyre depth looks like it is still usable
Some may still talk about it. The depth of the tyre that looks still usable does not mean it really keeps your car running as the rubber will age, thus causing a drop in traction performance, especially during wet condition.

2. How long will the tyre age? 
Two years? Three years? Five years?


[Source: Michelin website]


But most of the manufacturers will say, "It varies"


 [Source: Dunlop website]

[Source: Michelin website]


"Estimating the duration of a set of tyres is a much more complex affair" [Source: Pirelli website]


"No idea" is actually a correct answer


3. Tyre Warranty

Authorized Official Tyre has warranty, for the following brands:

Kenda - 12 months warranty
Tyre sidewall or other areas has a bulb or ball shape due to tyre quality issue. (require further checking if it is because of quality issue). Sole agent will deliver a new one for you. (Tyre puncture is not included in this warranty)

Dunlop - 12 months warranty
I did not check in detail. You got to ask them.

Continental - 180 days warranty
Within 180 days or a certain mileage, if the tire has a bulb due to quality issue, sole agent will deliver a  new one for you. 
"tire puncture is also included in the warranty" -> I am unsure if this term is still valid. You got to ask them.

Goodyear - 180 days warranty
Within 180 days or a certain mileage, if the tire has a bulb due to quality issue, sole agent will deliver a  new one for you.

For other brands, there is no specific warranty being mentioned. However, you could request for checking the quality issue, especially if the tire has a bulb after you just installed. The cumbersome point is the tire is needed to deliver to their office for checking. If quality issue is found, they will deliver a new one for you.

Anyway, the sole agents will not pay for the "labor fee". You need to ask the retail store if there is any "labor fee" incurred for replacing and/or deliver to the sole agent for checking

4. Can it be fixed if the tire has a bulb

It is unable to fix the bulb as it is caused by broken lining in the inner tyre. 


Anyway, could you avoid kicking the bulb?
At least, not in front of me. I do not want to witness the bulb suddenly burst and injure yourself.

If you have not seen how the bulb will burst, I can share some photos and videos.


5a. Tyre sidewall damaged (no air leaks), can it be fixed?


Most has raised up this question if this part can be fixed. But before that, something needs to be taken note that, 

According to the Hong Kong Road Traffic Regulation, tire that has a cut exceed at least 25mm should not be mounted on any vehicle. (subject to changes if the ordinance is amended)
But it does not mention whether it is still consider legal if the cut is "repaired". The same rule applies to vehicle inspection.

If you can fork out money, it can be "repaired". But the tire needs to be dismounted, and it may take longer than a day to "repair". The cost may even be higher than purchasing a new tyre.

Either you ignore it, or you purchase a new tyre. Do not ask me the cost of patching it up as I do not have such service.


5b. Sidewall has a puncture

I mentioned about internal patch previously. After experimenting, I decide to delete that post and write a new one about this.

Internal patch is not a sure-fix way to patch the sidewall puncture. If it stops leaking, you could still use it but purchase a new one should be the only option that you have in mind.


[Source: Michelin website]

Basically all the tire manufacturer will tell you to purchase a new one if the sidewall is damaged.



If you have purchased at Tyrehood online, remember to install the latest Tyrehood Zone app and create a account, and let me (Jimmy) know about it. I will update your account such that you can access Tyrehood customer only functions.








2020年11月27日星期五

Tyrehood Zone 2.0

 隔左過大半年, 終於推出Tyrehood Zone 2.0

今次更新, 

1. 新功能俾車主睇錶版燈, 就算出左盞燈都唔駛左搵右搵, 直接禁番手機apps 就搞點.

2. 另外新功能都包括電池同汽車配件(配件暫時只有俾日本車). 部分汽車配件都只有Tyrehood客戶先可以見到更多.

DIY 由 Tyrehood (其實係我自己整) 既product 只限於已經係Tyrehood (以網購等方式購買) 既客戶先會整.

另外個人資料入面, 另設有4個功能都只限於Tyrehood 客戶先可以用到. Tyrehood 既客戶記得裝番 Tyrehood Zone 2.0, 開番個account 我先可以幫大家update 番. 記得善用 Tyrehood Zone 2.0


下一個更新, 將會有更多有用既功能, 到時會再考慮是否會對所有車主開放.

2020年9月30日星期三

Asymmetric tire installation on the left and on the right 不對稱輪胎的安裝位置

The last post talked about three different tire patterns, and asymmetric tire pattern obtained are most often manufactured.

Asymmetric tire has an indicator "OUTSIDE" on the sidewall to tell people that it is mounted with the side facing outwards of the vehicle, and it can be installed on any side of the vehicle...... until a customer asked me regarding the installation of this asymmetric tyre on the left and right, I found out that I still need to learn more...

When this type of tyre is installed on the left and right, the patterns become different. This time, I use Kenda KR400 asymmetric tire to have a look of it.

The left side of the tire, the pattern (looking from outside to inside) goes from left top to the right bottom, and the right side of tire, the pattern (looking from outside to inside) goes from right bottom to the left top


Under normal circumstances, the pattern mounting on the left should be the same as on the right or vice versa (as depicted on the picture below, using red line)



The final production of such tire pattern is (probably or looks like) because of the manufacturing cost is lower, and according to the testing result which shows there is no issue with the performance.

In foreign country(ies), there are models with asymmetric tyre pattern indicated to mount on the left and right. 

Anyway, we do not need to care much about the pattern as there is only such asymmetric tire available in Hong Kong market, and as long as we are following the OUTSIDE and INSIDE mounting instruction

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

 係上一次就講到分別有三款呔紋, 而不對稱呔紋又係市場上佔左一定既地位.

不對稱呔紋輪胎有既標示, OUTSIDE, 都好明顯話俾人知個位係對出, 就應該可以裝係部車任何前後左右既位置...... 直到我俾人問左一個問題, 我發現我自己真係唔夠細心. 


當呢種呔裝係左面, 同埋右面既, 就會發現呔紋其實係唔同左方向. 今次就拎左Kenda KR400 既不對稱輪胎睇睇. 細心觀察下, 裝係左邊既呔紋(由出面去入面睇) 係由左上角去右下角. 而裝係右邊既呔紋係(由出面去入面睇)由右下角去左上角





正常黎講, 裝係左邊既呔紋應該同裝係右邊既呔紋成為倒影 (如下圖, 用紅色線示).  



係最後決定生產出黎最後都係得一款, inside outside 呔紋而不分安裝於左或右, 好似係因為製造成本費會較平, 同埋根據測試後發現就算似照第一張圖既情況下安裝, 性能都冇問題. 

不過咁樣睇第一圖既裝法, 總係覺得好似.. 怪怪的?

外國市場都好似有不對稱既呔係有分安裝於左及右. 不過係呢到香港, 都係唔好諗咁多啦, 跟番佢話係OUTSIDE 就向番出咁裝. 因為我地都冇得揀. 只係得呢啲OUTSIDE 同 INSIDE 既呔.




不對稱輪胎的安裝位置

 係上一次就講到分別有三款呔紋, 而不對稱呔紋又係市場上佔左一定既地位.

不對稱呔紋輪胎有既標示, OUTSIDE, 都好明顯話俾人知個位係對出, 就應該可以裝係部車任何前後左右既位置...... 直到我俾人問左一個問題, 我發現我自己真係唔夠細心. 


當呢種呔裝係左面, 同埋右面既, 就會發現呔紋其實係唔同左方向. 今次就拎左Kenda KR400 既不對稱輪胎睇睇. 細心觀察下, 裝係左邊既呔紋(由出面去入面睇) 係由左上角去右下角. 而裝係右邊既呔紋係(由出面去入面睇)由右下角去左上角





正常黎講, 裝係左邊既呔紋應該同裝係右邊既呔紋成為倒影 (如下圖, 用紅色線示).  



係最後決定生產出黎最後都係得一款, inside outside 呔紋而不分安裝於左或右, 好似係因為製造成本費會較平, 同埋根據測試後發現就算似照第一張圖既情況下安裝, 性能都冇問題. 

不過咁樣睇第一圖既裝法, 總係覺得好似.. 怪怪的?

外國市場都好似有不對稱既呔係有分安裝於左及右. 不過係呢到香港, 都係唔好諗咁多啦, 跟番佢話係OUTSIDE 就向番出咁裝. 因為我地都冇得揀. 只係得呢啲OUTSIDE 同 INSIDE 既呔.



2020年9月20日星期日

輪胎呔紋 - 點樣睇 Tyre tread patterns - How to look at it

(English version at the bottom)


好奇或者唔知到底自己用緊個條呔係啲咩呔紋?

 (暫時)  現時只有三款既輪胎胎紋

單向紋,  雙向紋不對稱紋

     單向紋 既紋向會指向(前方)一方. 輪胎的側壁會有指呔紋的方向. 安裝輪胎於呔鈴時的方向就會取決於輪胎應該安裝在汽車的左邊還是右邊. 

係香港有單向紋的呔款既例子:

Dunlop DZ102, Kumho PS31

                                   Yokohama V701                               Sailun Z4


係咁多款輪胎當中, 單向紋既輪胎較為少. 幾乎可以一隻手就都數得晒. (除左賽車或熱溶輪胎如 Yokohama AD08R, Sailun R01 Sport, Dunlop ZIII 等等, 通常都會係單向紋.) 理論上單向紋既輪胎係濕地上較為(可以話係最)出色. 


    雙向紋輪胎 可以無需理會任何方向, 任意安裝在任何位置的汽車上. 

係香港有雙向紋的呔款既例子:

                                                 Dunlop LM704                        Kenda KR30

 

以及大部分既商用貨車輪胎如 Michelin Agilis, Kumho PorTran KC53 都係雙向紋.

理論上雙向紋輪胎會較為耐用. 但係同單向紋輪胎一樣, 係香港都係得好少款先有.


    最後不對稱輪胎胎紋 係(暫時)佔全世界最多款既呔紋款式.

不對稱胎紋, 顧名思義就係兩邊既紋都係唔同. 會係兩邊既呔壁上分別列明 OUTSIDE 及 INSIDE.

OUTSIDE 指安裝輪胎在呔鈴時, 該位置需要對外. 


係香港有不對稱輪胎胎紋的呔款既例子:

                                            Falken FK510                      Michelin Pilot Sport 4


Yokohama 如 AE50, AE51, AE61

                                               Yokohama AE51                 Sailun ZSR 

Kumho PS91 等等.

當時設計師想將單向紋及雙向紋的特性加埋一齊, 所以就出現了不對稱呔紋, 都係大部分人現時買得最多既款.


不對稱呔紋都可以安裝於汽車任何位置 (前後左右) ........... 定好似係?

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

Curious, or even wonder the tyre that you purchase has what sort of pattern?

There are three types of tyre pattern in general:

Directional, Asymmetric and Symmetric

     Directional tyre has a tread pattern that points towards (to the front) one direction. Instead of indicating whether the tire should install on the left side or the right side of the vehicle, it has an arrow sign imprinted on the tire sidewall indicating the direction of the tire pattern.

Example of directional tyres available in Hong Kong include

Dunlop DZ102

                                   Yokohama V701                               Sailun Z4


With a myriad of models available, you can count how many directional tire just with a single hand. (Except racing performance tyre such as Yokohama AD08R, Sailun R01 Sport, Dunlop ZIII which are normally directional tyre pattern). Theoretically speaking, directional tyres got a upper hand in wet performance.


    Symmetric tyre tread pattern allows users to mount without concerning mounting directions. It can be installed on whichever side of the vehicle. 

Example of symmetric tyre available in Hong Kong

                                                 Dunlop LM704                        Kenda KR30

 


Most of the commercial tyres such as Michelin Agilis, Kumho PorTran KC53

Theoretically speaking, symmetric tires are more longer lasting. Just like directional tires, there are only a few symmetric tyres model available in HK.


    Lastly, Asymmetric tyres models takes up the major share in the automotive world (at this moment). 

The tread pattern of the tire on one side is different from that on the other side, which is defined as OUTSIDE and INSIDE, indicated at the sidewall.

The word OUTSIDE implies that the mounting of the tyre at that side should face out. 


Example of the assymetric tyres available in Hong Kong

                                            Falken FK510                      Michelin Pilot Sport 4


Yokohama AE category such as AE50, AE51, AE61

                                               Yokohama AE51                 Sailun ZSR 

Kumho PS91, etc etc etc


The designers wanted to combine directional tyres and symmetric tyres strength, resulting in asymmetric tyres that most people are purchasing now.


These asymmetric tyres can be installed at any side of the vehicle ............... Or is it?







Tyre tread patterns - How to tell the difference

Curious, or even wonder the tyre that you purchase has what sort of pattern?

There are three types of tyre pattern in general:

Directional, Asymmetric and Symmetric

     Directional tyre has a tread pattern that points towards (to the front) one direction. Instead of indicating whether the tire should install on the left side or the right side of the vehicle, it has an arrow sign imprinted on the tire sidewall indicating the direction of the tire pattern.

Example of directional tyres available in Hong Kong include

Dunlop DZ102

                                   Yokohama V701                               Sailun Z4


With a myriad of models available, you can count how many directional tire just with a single hand. (Except racing performance tyre such as Yokohama AD08R, Sailun R01 Sport, Dunlop ZIII which are normally directional tyre pattern). Theoretically speaking, directional tyres got a upper hand in wet performance.


    Symmetric tyre tread pattern allows users to mount without concerning mounting directions. It can be installed on whichever side of the vehicle. 

Example of symmetric tyre available in Hong Kong

                                                 Dunlop LM704                        Kenda KR30

 


Most of the commercial tyres such as Michelin Agilis, Kumho PorTran KC53

Theoretically speaking, symmetric tires are more longer lasting. Just like directional tires, there are only a few symmetric tyres model available in HK.


    Lastly, Asymmetric tyres models takes up the major share in the automotive world (at this moment). 

The tread pattern of the tire on one side is different from that on the other side, which is defined as OUTSIDE and INSIDE, indicated at the sidewall.

The word OUTSIDE implies that the mounting of the tyre at that side should face out. 


Example of the assymetric tyres available in Hong Kong

                                            Falken FK510                      Michelin Pilot Sport 4


Yokohama AE category such as AE50, AE51, AE61

                                               Yokohama AE51                 Sailun ZSR 

Kumho PS91, etc etc etc


The designers wanted to combine directional tyres and symmetric tyres strength, resulting in asymmetric tyres that most people are purchasing now.


These asymmetric tyres can be installed at any side of the vehicle ............... Or is it?