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 Car no power after replace 4 new tires

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TSfiberguy
post Aug 19 2020, 10:56 PM

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QUOTE(dannyw @ Aug 19 2020, 02:49 PM)
I have the same feeling. I just change few days ago. New tire feel softer but heavier.

Maybe is just too new and the air pressure different. I increase a bit more pressure to get back my feel.
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My old tyre is 200 now the new tyre workshop say need to put 220. How much you increase bro ?
TSfiberguy
post Aug 19 2020, 10:58 PM

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QUOTE(kenlimfornication @ Aug 19 2020, 03:04 PM)
I am not sure if lesser known brands or tyre size can increase fuel consumption until almost 30%.

Unless those tires are really heavy increasing your unsprung weight + tyre pressure + ineffective traction.

If this is the case then saving on cost of tyre is really not effective as the consumption is up by 30% and multiply that by 2-3 years of lifespan. You will be paying more.
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Yeah man a bit regretted for changing it to cheaper brand but no choice due to current situation kena pay cut so have to save here and there. Tyre size didn't change I just change to cheaper China made brand instead of Goodyear.
6UE5T
post Aug 20 2020, 12:09 AM

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QUOTE(fiberguy @ Aug 19 2020, 09:18 AM)
from Goodyear to Headway (china brand) due to no budget have to change cheaper one.  sad.gif
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Ugh unknown China cheapo brand but nonetheless should not cause such drastic drop in fuel consumption. I suggest you recheck the tire pressure yourself at the fuel station then observe again for several rounds of full tank (not just simply fill up rm50). Measure properly by resetting the trip meter to zero everytime you pump full then drive until fuel warning light turn on then see how far you travel. My suspicion is tire pressure too low and you didn't measure properly but just by feel which is inaccurate.

Btw what car do you drive, what tire size and how much did you pay for that China cheapo tires??
dannyw
post Aug 20 2020, 08:03 AM

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QUOTE(fiberguy @ Aug 19 2020, 10:56 PM)
My old tyre is 200 now the new tyre workshop say need to put 220. How much you increase bro ?
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I will say is personal preference and depends on pump at Petro Station. You will find out you pump same psi but different pump different result.

Personally i pump up to 34 psi front, 31 psi back, way higher than 200. 200 is soft and conform, but for my car (old Persona) is just too heavy.

I would say you can increase a bit first maybe 220 kpa, then try few days if not enough increase to 230, 240 until you find the pressure you like. But of couse don't exceed the maximum pressure as listed on the tyre, which i don't think so, as most tyre maximum pressure is above 40 psi.

Good luck, bro.
SUSeksk
post Aug 20 2020, 08:06 AM

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old tayar botak, botak less grip, less grip means less friction, less friction means care use less petrol to move.. on the flip side, less grip means higher chance of accident on wet road
wanfumi
post Aug 20 2020, 08:09 AM

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Most probably just a placebo
TSfiberguy
post Aug 20 2020, 09:57 AM

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QUOTE(6UE5T @ Aug 20 2020, 12:09 AM)
Ugh unknown China cheapo brand but nonetheless should not cause such drastic drop in fuel consumption.  I suggest you recheck the tire pressure yourself at the fuel station then observe again for several rounds of full tank (not just simply fill up rm50). Measure properly by resetting the trip meter to zero everytime you pump full then drive until fuel warning light turn on then see how far you travel. My suspicion is tire pressure too low and you didn't measure properly but just by feel which is inaccurate.

Btw what car do you drive, what tire size and how much did you pay for that China cheapo tires??
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Hi bro. I am driving a Persona 2014 and the cheapo tyre cost 110 per pcs. Noted on your advice. Thanks
zeng
post Aug 20 2020, 09:57 AM

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QUOTE(fiberguy @ Aug 19 2020, 10:56 PM)
My old tyre is 200 now the new tyre workshop say need to put 220. How much you increase bro ?
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200 or 220 is a bit too low for most typical passenger car tyres , more so if fuel consumption or sluggishness is of concern to you .

Give yourself up to 260-280 to 'feel' the improved fuel economy , never mind tyre brands .


TSfiberguy
post Aug 20 2020, 10:00 AM

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QUOTE(dannyw @ Aug 20 2020, 08:03 AM)
I will say is personal preference and depends on pump at Petro Station. You will find out you pump same psi but different pump different result.

Personally i pump up to 34 psi front, 31 psi back, way higher than 200. 200 is soft and conform, but for my car (old Persona) is just too heavy.

I would say you can increase a bit first maybe 220 kpa, then try few days if not enough increase to 230, 240 until you find the pressure you like. But of couse don't exceed the maximum pressure as listed on the tyre, which i don't think so, as most tyre maximum pressure is above 40 psi.

Good luck, bro.
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Hi bro, yeah I am driving Persona now and will try according to your advice. Thanks man
TSfiberguy
post Aug 20 2020, 10:01 AM

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QUOTE(eksk @ Aug 20 2020, 08:06 AM)
old tayar botak, botak less grip, less grip means less friction, less friction means care use less petrol to move.. on the flip side, less grip means higher chance of accident on wet road
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I would have think that also. Will play around with the tyre pressure thanks man
TSfiberguy
post Aug 20 2020, 10:02 AM

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QUOTE(zeng @ Aug 20 2020, 09:57 AM)
200 or 220 is a bit too low for most typical passenger car tyres , more so if fuel consumption or sluggishness is of concern to you .

Give yourself up to 260-280 to 'feel' the improved fuel economy , never mind tyre brands .
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Will definitely try that thanks man.
dannyw
post Aug 20 2020, 12:38 PM

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QUOTE(fiberguy @ Aug 20 2020, 10:00 AM)
Hi bro, yeah I am driving Persona now and will try according to your advice. Thanks man
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Welcome, bro. You may try up to 260 or above as per zeng mentioned. Until you feel too bumpy then just reduce a bit, that should be the best then.

My is 2011 Persona smile.gif
TSfiberguy
post Aug 20 2020, 01:00 PM

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QUOTE(dannyw @ Aug 20 2020, 12:38 PM)
Welcome, bro. You may try up to 260 or above as per zeng mentioned. Until you feel too bumpy then just reduce a bit, that should be the best then.

My is 2011 Persona smile.gif
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Will try that thanks man for the advice appreciate it.

6UE5T
post Aug 20 2020, 02:44 PM

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QUOTE(fiberguy @ Aug 20 2020, 09:57 AM)
Hi bro. I am driving a Persona 2014 and the cheapo tyre cost 110 per pcs. Noted on your advice. Thanks
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Wah really damn cheap, scary cheap almost like used tire price. I personally would rather buy used tires but good ones than these unknown cheapo but most people don't know how to check hence not an option for them. Anyway understandable in this difficult times, many loose jobs or get pay cuts so need to try save as much as possible. Just be mindful when driving coz usually these cheapo tires have horrendous grip especially in the wet. Drive safe.

QUOTE(zeng @ Aug 20 2020, 09:57 AM)
200 or 220 is a bit too low for most typical passenger car tyres , more so if fuel consumption or sluggishness is of concern to you .

Give yourself up to 260-280 to 'feel' the improved fuel economy , never mind tyre brands .
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No lah, most car std recommended pressure is around 190-230. My Evo and Swift only 220 front and 200 rear. My heavy Mark X only 230-240 max. 260-280 is already too hard for most cars unless you like harsh uncomfortable ride. Too high pressure like that also lose grip and too nervous in the wet. Persona is also a light car, no need such high pressures, at most should be just 220-230.
TSfiberguy
post Aug 21 2020, 01:09 PM

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QUOTE(6UE5T @ Aug 20 2020, 02:44 PM)
Wah really damn cheap, scary cheap almost like used tire price. I personally would rather buy used tires but good ones than these unknown cheapo but most people don't know how to check hence not an option for them. Anyway understandable in this difficult times, many loose jobs or get pay cuts so need to try save as much as possible. Just be mindful when driving coz usually these cheapo tires have horrendous grip especially in the wet. Drive safe.
No lah, most car std recommended pressure is around 190-230. My Evo and Swift only 220 front and 200 rear. My heavy Mark X only 230-240 max. 260-280 is already too hard for most cars unless you like harsh uncomfortable ride. Too high pressure like that also lose grip and too nervous in the wet. Persona is also a light car, no need such high pressures, at most should be just 220-230.
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Hi bro, will try that thanks for the advice man
cyapd
post Aug 21 2020, 09:46 PM

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Just don’t over or under inflate your tires. Anything over 240 for a passenger car such as the persona would be overkill and that’ll wear out the center lines much faster.
Tina91
post Aug 28 2020, 11:46 PM

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QUOTE(fiberguy @ Aug 19 2020, 09:18 AM)
from Goodyear to Headway (china brand) due to no budget have to change cheaper one.  sad.gif
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dude, i think Headway is a more gripper type tayar, thats why your FC is increased.
thats the characteristic of this tire.

this one from shopee, but for vellfire one la ....
Attached Image
ktek
post Aug 29 2020, 07:29 PM

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did anyone mention roll resistance & treadwear?
this two affect yo
baowen
post Aug 31 2020, 09:45 PM

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don't follow tayar shop "recommended" tyre pressure,
they will pump lesser air to your tyre so your thread gone faster.

follow the Tyre pressure sticker at the side of driver pillar.
every time i go service my car, the tyre pressure always less 4 ~ 6 Psi then recommended one.
alvinrenren
post Sep 1 2020, 12:18 AM

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QUOTE(Tina91 @ Aug 28 2020, 11:46 PM)
dude, i think Headway is a more gripper type tayar, thats why your FC is increased.
thats the characteristic of this tire.

this one from shopee, but for vellfire one la ....
Attached Image
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From this photo it seems the tyre is not efficient in terms of fuel consumption. It could be one of the reason the price of tyre is cheap (on top of branding and country origin). There is a misconception in relation to how efficient the tyre (rolling resistance) and how grippy (performance on wet/dry and braking/ cornering). There is a relation but some of the better tyre model is able to reduce rolling resistance(Fuel efficient) while maintaining performance (grippy) rather than the obvious (of the notion that the better performance tyre tend to have poorer efficiency).

Case in point Goodyear efficient grip might be more fuel efficient, but performance might equal or better than headway. Or Michelin PS4 might have better fuel efficiency than headway but also better performance. But PS4 efficiency will be worse compared to Michelin primacy 4, with reduced performance. Obviously price point is another factor in the overall choice of a tyre and each their own in their picks to balance out which is better from their budget based on total lifetime of tyre and extra fuel needed during that lifetime plus cost of tyre.

Balancing is another point, the assumption is the shop did a fine job in both alignment and balancing but do recheck. How is the vibration during drive? If the car is old, maybe need to check the front and rear suspension mount too if there is some play (they sit on a rubber mount and it will degrade, causing some play during drive and induce excess vibration). Might not relate a lot to your fuel consumption directly but alignment will run causing excess tyre wear, and extra rolling resistance.

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