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 Ask my anything about tires, I am a tire engineer

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littlefire
post Jul 1 2025, 11:32 AM

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QUOTE(ktek @ Jun 1 2025, 12:16 PM)
becos limited to straight line alignment only. the rest non adjustable.
unless u went to further customized control arm & so on
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Nop, i have to disagree if for modern allignment machines. Recently i bring my ride to do alignment and the shop latest alignment machine software got list out all the original tire size from the car model, when detected different size (especially larger size) will impact height = camber settings will off. Especially if knew lowered or tire size change, they will need to custom settings and cannot follow the original settings.
littlefire
post Jul 1 2025, 02:42 PM

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QUOTE(ktek @ Jul 1 2025, 03:19 PM)
custom means how?
calculate back formula or just use generic parameter/ hide ori setup
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Yes, they will need to key in as new vehicle model, custom parameter.
littlefire
post Jul 1 2025, 02:46 PM

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QUOTE(ayamxxx @ Jul 1 2025, 01:25 PM)
user posted image
any good this tyre model? A few recommend this model from FB group. Traction AA
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https://www.tyrereviews.com/Tyre/Kumho/Ecsta-Sport-PS72.htm

Consider as mid range max performance tire, dont expect too much
littlefire
post Jul 2 2025, 01:59 PM

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QUOTE(1kokies @ Jul 1 2025, 11:39 PM)
final sanity check with you guys Nissan Fairlady 350Z , use for daily drive, sometimes spirited, goes outstation on weekends, no track. Tire size 225/45/18 & 245/45/18

Michelin PS5 or Giti Sport S2 ?
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If your not going to track and daily drive i will pick the lower cost tire.
littlefire
post Jul 4 2025, 01:42 PM

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QUOTE(DM52 @ Jul 2 2025, 10:13 PM)
Hello, between Hankook Ventus Prime 4 & Michelin Primacy 5, which one more comfortable and more gooding?.

Size 225/50R17
Price Hankook Prime 4 is RM380
Price Michelin Primacy 5 is RM 550

Currently using Hankook Ventus Prime 3, All I can see, this tyre comfort level is very good. but, only one downside, the tyre is not that silent. everything else, handling, wet, dry, comfort level, braking, all I satisfied. Its like a perfect tyre for my diriving pattern.

Always in my mind want to change into prime 4 until primacy 5 come out. only downside I see about primacy 5 is design is so damn ugly. dont know u all agree or not about this. lol.
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https://www.tyrereviews.com/Compare/Ventus-...S-Primacy-5.htm

Already got comparison ready in tyre reviews. Damn.. Why a lot of people dont know or utilize this website.. This website really provide a lot of good info and reviews.. Overall Michelin is the better tire.

littlefire
post Sep 9 2025, 01:38 PM

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QUOTE(ryuzaki_L @ Sep 8 2025, 05:36 PM)
Anyone here using the new turanza 6? Any comment on the tyre?
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Tyre Review website got a lot of info

https://www.tyrereviews.com/Tyre/Bridgestone/Turanza-6.htm
littlefire
post Sep 25 2025, 08:52 AM

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QUOTE(contagiouseddie @ Sep 23 2025, 01:44 PM)
Looking to replace my Bridgestone Turanza T005A 205/60/17 tyres with either UX7 205/60/17 or Primacy 4 205/60/17. The price difference come out to around RM300 total for 4 tyres. Do you guys think it's worth paying that extra for the Michelin. Would prefer a more quiet tyre.
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Michelin is famous for comfort & braking performance, if you priorities in this 2 then worth the extra money. If normal drive, usage than the UX7 serve the purpose.
littlefire
post Sep 30 2025, 07:53 AM

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QUOTE(leaF @ Sep 30 2025, 02:16 AM)
Try tyreplus ..price difference for primacy 5 only different rm20 ..well if u buy 4 donuts got rm200 vc now.. summore their cs very helpful not like oscar answer and drop ur call
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Oscar too many customer to entertain your call, even those go to wait some waited from morning until evening only get their tire change. sweat.gif
littlefire
post Sep 30 2025, 11:26 AM

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QUOTE(drmundo @ Sep 30 2025, 08:54 AM)
Hi, may I ask if the Dunlop D06 195/55R15 is a good option? The price seems quite affordable compared to other brands. If possible, I’d prefer to avoid tyres made in China.
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Consider hard rubber type, i used before but after 1 month sold off as i found out wet braking & comfort not to my liking. If you want a tire which can last long and normal use it should suit the requirement, if want comfort and better braking performance look for others. For my case i went for Yokohama ES32.
littlefire
post Oct 2 2025, 09:41 AM

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QUOTE(audionutter @ Sep 30 2025, 06:20 PM)
Looking for run flats in the following size:

255/40 ZR20 XL 101Y

Anyone know what is available?
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All the big brands no ask? Or you want cheapo budget tires?
Usually for big special size Bridgestone, Continental, Pirelli, Michelin should able to get but need order.
For cheapo budget tires can try ask for Landsail, seen a lot of MPV/SUV with big sport rims usually fitted with this China brand.
littlefire
post Oct 6 2025, 09:42 AM

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QUOTE(pandikar @ Oct 6 2025, 07:14 AM)
What kind of specific inspections for tyres more than 5 years?

Have one Toyota Corolla SE with last replaced 185/60R14 in Dec 2019. Car only for weekend drive, haven't reached 5,000km.

Plan to change all 4 until I read your post.
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Yes, as per @amscouzach57 feedback

There is no need to change all 4 tires if still within 10 years lifespan & everything still good. My fathers classic car until today almost 9 years tire still in good condition, no crack or peeling anything. Anyway do take note that some tire shop might not be so professional, personally knew a lot of tire shop will try to scam and ask to change after 5 years often with fear mongering tactics (will try say not safe laa, will explode laa..) thus why i lucky to knew few real friends in tire industry.

This post has been edited by littlefire: Oct 6 2025, 10:03 AM
littlefire
post Oct 6 2025, 03:52 PM

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QUOTE(Deathscythe@@ @ Oct 6 2025, 04:16 PM)
Many thanks. My curren car odometer showing 107 but waze showing 100. Can the 225 50 r18 actually corrected this issue? confused.gif
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Any changes to original tire size will impact real world speed as the odometer will not be accurate, even with original tires if already wear out (trend depth already less) will not accurate also.
littlefire
post Oct 6 2025, 04:02 PM

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QUOTE(Deathscythe@@ @ Oct 6 2025, 04:54 PM)
my car just 3k ++ mileage. That is why I feel wanna change tyres. The Rim is looks good. Just that the odometer showing 110 but waze only showing 102/103 km/hr. Annoying. bangwall.gif
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There is a golden rule that the diameter cannot out by 3% if change to other size, even you change to other size it will be hard to maintain same diameter and speed difference. The most can minimize the speed difference, but cannot totally same.
littlefire
post Oct 6 2025, 05:24 PM

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QUOTE(Deathscythe@@ @ Oct 6 2025, 05:07 PM)
Then the best is upsize to 225 45 R18 fro 225 40 R18? my current recommended pressure is 41 psi. If upsize to 225 45 r18, I read somewhere I can reduce the tyre pressure lower. Am I right? I seen FB group reduce the pressure using stock tyres to 35-38 psi and the tyres side gg.  bangwall.gif
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Bro, original if 225/40/R18 why dont want to maintain same size? If you want comfort search for comfort touring base tires like Michelin Primacy 4, Hankook Ventus Prime 4, Bridgestone Turanza 6? Why the itch to up size?

People usually either downgrade to 215 or 205 /45/R18 or upgrade to 235 or 245 /35/R18 (still within 3% golden rule), this also need to consider your current sport rim (JJ) width if able to accept wider or narrow tires.

https://kereta.info/wheel-size-vs-tyre-size...dan-rim-sesuai/

littlefire
post Oct 7 2025, 09:57 AM

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QUOTE(Deathscythe@@ @ Oct 7 2025, 10:19 AM)
I thought can get the 225/45/R18 slightly thicker tyres (for better comfort?) . The current tyres is goodyear F1 I think. Nipis and 41 PSI. feel bumpy.  doh.gif
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This is the worse advice i heard for modern times, who tell you by getting thicker tires can be comfort? Especially modern rides nowadays their suspension settings already suit with the tire & sport rim diameter/width. Different changes or settings can impact overall driving & comfort. I learn the hard way previously also listen to some poor advice by changing tire size due to cost in the end the BMW handling sucks and comfort also no way good. Waited for 1 year later (save up some money) order original size and put back and everything went back normal.
littlefire
post Oct 8 2025, 07:48 AM

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QUOTE(Deathscythe@@ @ Oct 7 2025, 03:27 PM)
then what tyres better than the stock one (good year F1)? doh.gif
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Bro, already feedback previously if you want comfort search for comfort touring tires (like Michelin Primacy 4, Hankook Ventus Prime 4, Bridgestone Turanza 6, etc) and use back original size. Each tire brand got many type of category, the Goodyear F1 (depending on model also normal Sport under UHP, Asymmetric 3 under UUHP/Max Performance tire) which is mainly for performance and less comfort base.
littlefire
post Oct 16 2025, 08:42 AM

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Repeated

This post has been edited by littlefire: Oct 16 2025, 08:47 AM
littlefire
post Oct 16 2025, 08:51 AM

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QUOTE(n0thing @ Oct 15 2025, 01:54 PM)
UX7 vs Turanza 6 205/60R17

Both around same price. Turanza 6 maybe rm100 more for 4 tyres (rm25 more per tyre).

Anyone with experience or recommendations?
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I would opt for Turanza 6 anytime over UX7.
Turanza 6 is equivalent/direct compete to Michelin Primacy series and plenty of proven test reports.

https://www.tyrereviews.com/Tyre/Bridgestone/Turanza-6.htm

littlefire
post Nov 3 2025, 01:43 PM

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QUOTE(HalseyFrangipane @ Nov 3 2025, 01:05 AM)
255/35 R19
275/35 R19

PS4S or SC7?
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https://www.tyrereviews.com/Compare/SportCo...t-Sport-4-S.htm

Already got comparison ready in tyre reviews...
littlefire
post Nov 3 2025, 03:17 PM

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QUOTE(HalseyFrangipane @ Nov 3 2025, 03:27 PM)
This comparison reviews the performance of the tyres, as well as their subjective comfort. But it did not test the longevity or average wear.

Interested to get other people's experience that may be used in different conditions or circumstances, and also their own opinion on the comfort and wear based on their usage.
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Performance tires people dont talk about wear, as it is expect to wear out fast. If you want long wear tires better get normal touring tires like Primacy series. If talk about comfort, no need look for others even the website also Michelin score better. FYI each person also subjective in term of tire wear, if the person always go track even few thousand km also already wear out.

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