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.