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 Ask my anything about tires, I am a tire engineer

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ben3003
post Mar 15 2023, 05:45 PM

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Guys, is nexen tire okay? For normal usage. Wan comfort.


Size 205/55/r16.

No size at my place. How about westlake? if westlake vs lingloong, which one better?

This post has been edited by ben3003: Mar 16 2023, 07:52 AM
littlefire
post Mar 16 2023, 03:17 PM

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QUOTE(ben3003 @ Mar 15 2023, 06:45 PM)
Guys, is nexen tire okay? For normal usage. Wan comfort.
Size 205/55/r16.

No size at my place. How about westlake? if westlake vs lingloong, which one better?
*
Nexen what model? If you ask me the Korean brand is more reputable in international market compare to any China brand.

If die die want to use China brand, Westlake is famous for cheap performance tires.
ben3003
post Mar 16 2023, 03:37 PM

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QUOTE(littlefire @ Mar 16 2023, 03:17 PM)
Nexen what model? If you ask me the Korean brand is more reputable in international market compare to any China brand.

If die die want to use China brand, Westlake is famous for cheap performance tires.
*
they said nexen no size for my tire. so have to go for china brand lol. Ok noted, cos lingloong is bnd3 cheaper, probably just go for westlake. thanks.

if nexen can comparable to michelin? or same level toyo tires those?
littlefire
post Mar 16 2023, 04:06 PM

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QUOTE(ben3003 @ Mar 16 2023, 04:37 PM)
they said nexen no size for my tire. so have to go for china brand lol. Ok noted, cos lingloong is bnd3 cheaper, probably just go for westlake. thanks.

if nexen can comparable to michelin? or same level toyo tires those?
*
Nexen is in budget mid range tires, they are not michelin premium level. Consider similar range as Toyo, but their Nexen SUV tire range is way better.

This post has been edited by littlefire: Mar 16 2023, 04:07 PM
andrekua2
post Mar 16 2023, 04:38 PM

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QUOTE(ben3003 @ Mar 15 2023, 05:45 PM)
Guys, is nexen tire okay? For normal usage. Wan comfort.
Size 205/55/r16.

No size at my place. How about westlake? if westlake vs lingloong, which one better?
*
Take K125 la.. now got promo..

I took 205/45/17 RM250 each then RM40 for steel valve (my rubber valve already 9 years) and another RM30 for alignment. Just received the RM100 yesterday in my tng.

This post has been edited by andrekua2: Mar 16 2023, 04:41 PM


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ben3003
post Mar 16 2023, 06:36 PM

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QUOTE(andrekua2 @ Mar 16 2023, 04:38 PM)
Take K125 la.. now got promo..

I took 205/45/17 RM250 each then RM40 for steel valve (my rubber valve already 9 years) and another RM30 for alignment. Just received the RM100 yesterday in my tng.
*
Don have hankook in miri sarawak 😂 and brunei also. I would take hankook also if available..
Benteo
post Mar 18 2023, 06:11 PM

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I wish to express on 215 60 17 stock Giti SUV comfort 520, overall good performance but lack on grip especially on wet, im a continental and michelin user before but i like the silence from Giti but not on the confidence on wet condition and the touring at corners, doesn't perform like the two primes as mentioned above. Currently exploring for front tyre replacement. Mileage 17k only.
unitron
post Apr 5 2023, 01:30 PM

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Question for TS

What could be the reason for the noise, given below scenario ?

- Tire is used Pirelli Dragon Sport, 225/40/R18 that was manufactured back in 2016 (7 years old tires) that still have good thread pattern and depth.
Tire was stored for unknown period since last use, and recently fitted back on the car after balancing and of course alignment.
Tire is making loud humming noise when driven. There don't seem to be any visual defects on the tires, or uneven wear.


TSepjx31
post Apr 5 2023, 09:57 PM

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QUOTE(unitron @ Apr 5 2023, 01:30 PM)
Question for TS

What could be the reason for the noise, given below scenario ?

- Tire is used Pirelli Dragon Sport, 225/40/R18 that was manufactured back in 2016 (7 years old tires) that still have good thread pattern and depth.
Tire was stored for unknown period since last use, and recently fitted back on the car after balancing and of course alignment.
Tire is making loud humming noise when driven. There don't seem to be any visual defects on the tires, or uneven wear.
*
Interesting, I would say definitely something is not in harmony creating the high frequency peak which you deemed annoying. Could you check the surface of your tires whether they are smooth? Also does this come from one single tire (ask someone outside to hear it too) how about the inflation pressure? All checked?
unitron
post Apr 7 2023, 10:45 AM

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QUOTE(epjx31 @ Apr 5 2023, 09:57 PM)
Interesting, I would say definitely something is not in harmony creating the high frequency peak which you deemed annoying. Could you check the surface of your tires whether they are smooth? Also does this come from one single tire (ask someone outside to hear it too) how about the inflation pressure? All checked?
*
I visually inspected and also ran my hands over the tires, cannot find anything wrong.
Inflation pressure is good, following the recommendation of the car manufacturer.
Rims are also original from the car manufacturer.

Good idea to check if 1 or both tire, I'll ask my friend to listen see if we can identify which side.
arffrhn
post Apr 10 2023, 09:33 PM

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At what mileage should one get a tyre change? Currently using continental uc6 215/55r18 @ 35k km.
ben3003
post Apr 11 2023, 01:07 PM

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Hi guys, westlake no more stock they offer me BND58/pc lanvigator comfort 2 lol. So far i tried the feeling not bad, plan change 4pcs but they no stock. Normally if change only front tyre, need do alignment?
littlefire
post Apr 11 2023, 04:33 PM

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QUOTE(ben3003 @ Apr 11 2023, 02:07 PM)
Hi guys, westlake no more stock they offer me BND58/pc lanvigator comfort 2 lol. So far i tried the feeling not bad, plan change 4pcs but they no stock. Normally if change only front tyre, need do alignment?
*
No, please no. If want to change just 2pcs never put in front first (Always put new tires in rear) unless the rear is different size or staggered/wider rims.

Dont simply just change no brand tires, if Westlake dont have ask for more famous brand like Giti, Sailun, Maxxis, Nankang alternatives. Some no famous brand cheap tires the rubber composition really bad, my mechanic encounter 1 cant even do normal patching job from outside due to nail and need to do open up the tires do the inner patch + adhesive due to poor rubber composition (hard to bond with the patch). The normal patch unable to seal it with normal adhesive, just imagine at rural area if no spare tires, your tires will keep leaking air even with the patch. doh.gif

This post has been edited by littlefire: Apr 11 2023, 04:35 PM
unitron
post Apr 12 2023, 09:37 AM

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QUOTE(unitron @ Apr 7 2023, 10:45 AM)
Good idea to check if 1 or both tire, I'll ask my friend to listen see if we can identify which side.
*
Tried getting a friend to listen while i drive by a few times. Cannot identify which side.
Actually now, not even sure it's coming from the front or rear. Feels like the front though.

The humming most loudest at around 35 km/h... maybe some resonance thingy hmm.gif

littlefire
post Apr 12 2023, 10:14 AM

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QUOTE(unitron @ Apr 12 2023, 10:37 AM)
Tried getting a friend to listen while i drive by a few times. Cannot identify which side.
Actually now, not even sure it's coming from the front or rear. Feels like the front though.

The humming most loudest at around 35 km/h... maybe some resonance thingy hmm.gif
*
Bro, did you ask mechanic to jack up your car with 4 wheels on air while someone inside help start & stepping on fuel to see which wheel got sound? some mechanic they got some machine which can help spin your wheels imitating driving on high speed. If got sound with either one of the 4 wheels on air means something wrong with your bearings (wheel or gearbox) or driveshaft. This at least help eliminate or identify some of the concern before going just for the tires.

This post has been edited by littlefire: Apr 12 2023, 10:23 AM
TSepjx31
post Apr 12 2023, 12:06 PM

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QUOTE(littlefire @ Apr 11 2023, 04:33 PM)
No, please no. If want to change just 2pcs never put in front first (Always put new tires in rear) unless the rear is different size or staggered/wider rims.

Dont simply just change no brand tires, if Westlake dont have ask for more famous brand like Giti, Sailun, Maxxis, Nankang alternatives. Some no famous brand cheap tires the rubber composition really bad, my mechanic encounter 1 cant even do normal patching job from outside due to nail and need to do open up the tires do the inner patch + adhesive due to poor rubber composition (hard to bond with the patch). The normal patch unable to seal it with normal adhesive, just imagine at rural area if no spare tires, your tires will keep leaking air even with the patch.  doh.gif
*
Totally agree !
unitron
post Apr 12 2023, 02:22 PM

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QUOTE(littlefire @ Apr 12 2023, 10:14 AM)
Bro, did you ask mechanic to jack up your car with 4 wheels on air while someone inside help start & stepping on fuel to see which wheel got sound? some mechanic they got some machine which can help spin your wheels imitating driving on high speed. If got sound with either one of the 4 wheels on air means something wrong with your bearings (wheel or gearbox) or driveshaft. This at least help eliminate or identify some of the concern before going just for the tires.
*
Thanks, that already been tried.. It's not the bearings, gearbox or driveshafts.
ktek
post Apr 15 2023, 10:54 AM

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QUOTE(unitron @ Apr 5 2023, 01:30 PM)
Question for TS

What could be the reason for the noise, given below scenario ?

- Tire is used Pirelli Dragon Sport, 225/40/R18 that was manufactured back in 2016 (7 years old tires) that still have good thread pattern and depth.
Tire was stored for unknown period since last use, and recently fitted back on the car after balancing and of course alignment.
Tire is making loud humming noise when driven. There don't seem to be any visual defects on the tires, or uneven wear.
*
old tyre are like that. i install 6yr old tyre before. it was medium wear kept indoor.
so loud but dont care. push them away during car selling.
eclectice
post Apr 16 2023, 03:35 PM

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QUOTE(mdziaf @ Mar 2 2023, 10:38 AM)
UTQG is a self certification type. This means that any manufacturer can declare whatever value they want as long as the TIRES WITHIN IT BRAND performs in line with what they have defined on a standard test track (example provided below). UTQG grading is govern by the US Department of Transport.

Example;
Let say tire manufacturer A has 4 tire lines name J, K, L & M and that, each is assigned a UTQG treadwear value of 100 200 300 and 400. As long as the results from the manufacturers' testing show thats M last 4 times longer than J (since M has 400, J is 100), L last 3 times longer than J, and K last 2 times longer than J, they grading is considered correct. All Manufacturer A has to do is to show the test results if the Department of Transport asks. Lets say tire line J achieves 40,000km in the treadwear test.

If Manufacturer B comes and does the same (and have the same rating for their tires J K L and M as A), but for thier tire J their results they got 20,000km. Their rating of 100, 200, 300 and 400 is still valid. Because between the tires within their brand their relative performance is reflective of their grade.

So in other words, you cannot compare the values of a treadwear rating between manufacturers.
Your comment about how the car is driven is still correct and will effect how long the tires will last.

Edit: just to make it clear, from the example: Manufacturer A's tire J has 100 Treadwear rating and lasts 40,000km on a standard test track, but it will perform similar to Manufacturer's B's Tire K that has 200 treadwear rating. All this because there is no standard reference in the UTQG treadwear rating, only relative performance within the respective tire manufacturer. Hence why its meaningless to compare treadwear rating between manufacturers.
*
UTQG treadwear grade shall be compared against tires of the SAME type and the SAME manufacturer only.

This post has been edited by eclectice: Apr 16 2023, 03:36 PM
onetree710
post Apr 17 2023, 01:34 PM

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QUOTE(mdziaf @ Mar 2 2023, 10:38 AM)
UTQG is a self certification type. This means that any manufacturer can declare whatever value they want as long as the TIRES WITHIN IT BRAND performs in line with what they have defined on a standard test track (example provided below). UTQG grading is govern by the US Department of Transport.

Example;
Let say tire manufacturer A has 4 tire lines name J, K, L & M and that, each is assigned a UTQG treadwear value of 100 200 300 and 400. As long as the results from the manufacturers' testing show thats M last 4 times longer than J (since M has 400, J is 100), L last 3 times longer than J, and K last 2 times longer than J, they grading is considered correct. All Manufacturer A has to do is to show the test results if the Department of Transport asks. Lets say tire line J achieves 40,000km in the treadwear test.

If Manufacturer B comes and does the same (and have the same rating for their tires J K L and M as A), but for thier tire J their results they got 20,000km. Their rating of 100, 200, 300 and 400 is still valid. Because between the tires within their brand their relative performance is reflective of their grade.

So in other words, you cannot compare the values of a treadwear rating between manufacturers.
Your comment about how the car is driven is still correct and will effect how long the tires will last.

Edit: just to make it clear, from the example: Manufacturer A's tire J has 100 Treadwear rating and lasts 40,000km on a standard test track, but it will perform similar to Manufacturer's B's Tire K that has 200 treadwear rating. All this because there is no standard reference in the UTQG treadwear rating, only relative performance within the respective tire manufacturer. Hence why its meaningless to compare treadwear rating between manufacturers.
*
The above statement is wrong.
UTQG treadwear is benchmarked against a standard reference tire (SRTT) with a treadwear of 100, not simply any tire by any manufacturers.
You can in fact compare the treadwear between different tires and manufacturers.
Here I copy part of a statement from US government's website:

"The 14-inch SRTT was first introduced in the 1980s. The 14-inch SRTT was manufactured by one company, Michelin North America, Inc (Michelin) and was sold under its Uniroyal brand. NHTSA uses the 14-inch SRTT to evaluate tire treadwear performance by comparing a candidate tire's performance to the performance of the SRTT in a particular performance test. NHTSA also uses the 14-inch SRTT to evaluate test surface friction for safety standards relating to braking because the narrow specifications for the tire (size, component materials, etc.) ensure consistent, repeatable performance."

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