I believe he already answered.
They got their own quality & tolerance control, even in different plant or country the formula should be still similar for same tire model.

I do not think interest in car is important but R&D background is certainly a plus.

Tire industry is all about target conflicts. An ideal tire engineer solves them with a range of complex material & technology while ensuring it can be still be producible. If you like a challenge, tire industry is definitely something you should explore. I think the key is to be very flexible in terms of learning as you will need mechanical, material, process & simulation knowledge to be a highly effective engineer.

I would not say its difficult but the competition is hot for the premium manufactures.

China being in the APAC region, It would be a good guess if there are the same. You could even measure the shore hardness and compared to see is there any big differences.

I think the price is greatly depending on where the tires are from and also the taxes imposed. The cheapest would be of course a locally sourced tire which has no taxes. PS5 is definitely imported so volumes and price points could differ in Singapore.

Tell me how to choose tires which less noisy?

Do research bro, if the tire model you interest to buy is from reputable brand usually got EU label which indicate the noise db level.
Everything can be search or find in google or search engine or go https://www.tyrereviews.com/ to check out other people feedback.

This post has been edited by littlefire: Jul 14 2022, 12:29 PM

Hi both, One item to point here. The EU label indicating the noise level is for exterior noise. This is the noise which you will hear if you are passing by the car with the engine switch off while coasting. What most users want is good interior noise which depends mostly on your car's sound absorption and also a bit from the tire. OE manufacture's do demand this kind of data especially when they pair their tires with new vehicles but sadly this data are always not made public.

Noise is a delicate topic as the noise generated by the tire depends on the softness of the compound, tread pattern, road surface and load on the tire. In general speaking there is some correlation from exterior noise & interior noise which might give you a hint which tires are less noisy. But generally tire with less grooves are better for noise.

Have you experienced tires which are really noisy till it annoys you?

Import tax I read somewhere it says 5%. Mark up for tires on average is 60%. But of course this is skewed towards the high inch region where sometimes it is double the amount.

Any issues if i keep seeing road pebbles or small stones lodged on my tyre threads? Leave it as it is?

These are usually fine as they tend to come out naturally. If you are hardworking of course it would be nice to pick them out but i predict the influence is very minimal.

sorry noob question
myvi gen3, 205 45 R16, how much air i should be putting in ?

I would use the same recommended pressure as your stock 185/55R15 tires. Unfortunately as this is an inch up you would need to find the right balance and sometimes it could be tricky. The range of being ok is extremely huge. So as long your tire is not off 5 psi + or - you are safe.

i been putting one psi higher then stock psi, so far couldn’t feel any difference la.

how to say is the right balance haha

I'm driving SUV Tiguan with 4motion and my two rear tire is about to be replaced soon. Currently, using Continental MC6, 235/50/R18.

1). Can I buy a different brand/model tire?
2). New tire should fit at Front or Rear?
3). Any recommendation of tire good for dry and wet? Hopefully can match MC6's performances.

1) Yes
2) 4motion = AWD, AWD rides need change all 4 tires at once (Please read your manual book!)
3) MC6 is UHP tires, if you want equivalent or better tires (UHP/Max Performance) you need to get at least like Michelin PS4/PS5 SUV tires, Bridgestone Potenza Sport/RE004, Goodyear Eagle F1 AS 5/6, Falken FK510 SUV, Hankook S1 Evo3...

https://www.tyrereviews.com/Search/Size/235...8/Season/Summer

https://www.tiguanforums.co.uk/threads/tyre...airs-only.4761/

This post has been edited by littlefire: Jul 25 2022, 09:12 AM

hello, do you know why and what the reason behind, the tires price huge jump(almost double) for like every 2 inch larger? just curious

ps4 for example
205/50/16 ~~ 450++
215/45/17 ~~ 480++

225/40/18 ~~ 750++
225/40/19 ~~ 900++

20~~ 1700++
21~~1700++

bro i am using a subaru forester mileage only 28k but the side of the tires already makan and the middle thread is almost 50%. what could be the reason?

i rotate tires every 10k mileage.
tire size is 225/55/r18 current one is bridgestone

In the market for new tires. Recently discovered PS4S. Should I for PS4S or PS5? What would be the main differences?

1). Can I buy a different brand/model tire?
---> For sure you can buy another brand. Its a free market. You do not have to stick with the OE tires.

2). New tire should fit at Front or Rear?
---> There is 2 main points when it comes to this.
1st: Putting new tires on the rear would be beneficial especially during aquaplaning situation. Your higher tread depth would allow you a higher slip speed compare to the front tires. Also if you have an emergency with your lower tread depth tires in the front, you can steer them. For safety reasons you should always place the new tires in the rear

2nd: Putting new tires on the front make sense from a wear point of view. As you are most likely driving in a front wheel mode for your Tiguan, this would mean that your front tires will wear faster and balance your wear rate in the rear at one point which allows your to prolong your time till the next tire change.

So based on these 2 points, you should balance between your requirements. If you do travel > 80 km/h during rainy days with big water patches you should fit it on your rear. Of course you can always drive slower and avoid aquaplaning and set your new tires to your front to have more "value"

3). Any recommendation of tire good for dry and wet? Hopefully can match MC6's performances.

Michelin Primacy 4st 235/50R18 730
Continental UC6 235/50R18 540
Kumho Ecsta PS31 235/50R18 468
Continental Max Contact 6 235/50R18 550
Yokohama Advan Fleva V701 235/50R18 538

I had a quick look on my price table and the above are some of them options. MC6 is one of the best in wet but if you are looking for something better, I would recommend Primacy 4st. You can check out the head to head comparison here

Nice observation. I cover the topic of inch up pricing here

I hope that it answers your question.