Achilles ATR Sport

[infinity.melvin]

Woah 44psi is killer high man.. max I ever put is 34psi can feel very bumpy.. daily use on hot weather pressure will rise couple of psi. Better dont gamble with max pressure.

 

[vr2turbo]

Woah 44psi is killer high man.. max I ever put is 34psi can feel very bumpy.. daily use on hot weather pressure will rise couple of psi. Better dont gamble with max pressure.

Yup, I have heard of 36psi and even 38psi but 44psi?:hmmmm:

 

[Impronte]

bit suprise about the tire pressures..

last few week also, i went to MPS for val&allign my wheels, i found this guy that ride new VW golf (2 doors) that spoke to me that the tire pressure of his car a bit surprise.. around 41psi at 16inch rim.. first i found it very itchy but when u look the sticker (at the fuel cover), u can see clearly mention 41psi..

it's ok just follow the instruction given or just adjust it by our own comfort?

sticker a bit like this:

<a href="http://www.imagebam.com/image/74d4c7255737258" target="_blank"><img src="http://thumbnails108.imagebam.com/25574/74d4c7255737258.jpg" alt="imagebam.com"></a>

 

[vr2turbo]

bit suprise about the tire pressures..

last few week also, i went to MPS for val&allign my wheels, i found this guy that ride new VW golf (2 doors) that spoke to me that the tire pressure of his car a bit surprise.. around 41psi at 16inch rim.. first i found it very itchy but when u look the sticker (at the fuel cover), u can see clearly mention 41psi..

it's ok just follow the instruction given or just adjust it by our own comfort?

sticker a bit like this:

<a href="http://www.imagebam.com/image/74d4c7255737258" target="_blank"><img src="http://thumbnails108.imagebam.com/25574/74d4c7255737258.jpg" alt="imagebam.com"></a>

Wah! that is high......:hmmmm:

 

[Impronte]

Wah! that is high......:hmmmm:

i'm also like whoa!!! same goes to both uncle's (tauke) and the workers (same goes to his son).. all that i can told them is, look at that sticker..

there's also quite new for me is, what the different by putting just air and also gas to our tires? just lost a bit for a several period? more reliable?

suprise bro vr2turbo also like me (like 1sttime getting real big amount of cash)

 

[vr2turbo]

i'm also like whoa!!! same goes to both uncle's (tauke) and the workers (same goes to his son).. all that i can told them is, look at that sticker..

there's also quite new for me is, what the different by putting just air and also gas to our tires? just lost a bit for a several period? more reliable?

suprise bro vr2turbo also like me (like 1sttime getting real big amount of cash)

If you are talking about air and nitrogen gas, then there is a difference.
Nitrogen is more dense therefore suppose to leak less. However our air (as we call it) is already 78% nitrogen. The problem actually comes from the pump. As it compresses air, water vapor is formed and without a good filter this is passed on into our tyres. Since is water vapor it expands easily when the tyres gets hot, therefore the increase in air pressure. Nitrogen on the other hand runs cooler.
However in our every day car this is not going to make much difference, unless you are in F1 racing, where every degree counts, every psi counts, and every second counts.
The negative point is, can the nitrogen be 100%? Well, no because there is still air left inside a tyre even when deflated. Only way is to have 2 valve system, one pump and one suck out.
Another problem is not all tyre shop have the nitrogen machine, and lastly, most of the time got to pay for nitrogen refill....

Yup, most of the labels I see so far is 28psi to 32 psi, some max out at 36psi, so for something in 40+ psi is new to me also....

 

[neohadri]

years ago SC did pump 44psi to my tyres when i asked them to rotate my tyres, not until week later only i found out because it felt weird driving the car, the ride is bumpy and tyre grip is greasy

 

[ColdPlay]

If you are talking about air and nitrogen gas, then there is a difference.
Nitrogen is more dense therefore suppose to leak less. However our air (as we call it) is already 78% nitrogen. The problem actually comes from the pump. As it compresses air, water vapor is formed and without a good filter this is passed on into our tyres. Since is water vapor it expands easily when the tyres gets hot, therefore the increase in air pressure. Nitrogen on the other hand runs cooler.
However in our every day car this is not going to make much difference, unless you are in F1 racing, where every degree counts, every psi counts, and every second counts.
The negative point is, can the nitrogen be 100%? Well, no because there is still air left inside a tyre even when deflated. Only way is to have 2 valve system, one pump and one suck out.
Another problem is not all tyre shop have the nitrogen machine, and lastly, most of the time got to pay for nitrogen refill....

Yup, most of the labels I see so far is 28psi to 32 psi, some max out at 36psi, so for something in 40+ psi is new to me also....

+1 !

RM20 for 4 tyres and shop usually pump up to 91kpa of nitrogen with the rest is oxygen.
Surprisingly, my experience on nitrogen returned better fc. Stretch to average about 2km extra on every liter of fuel. Not to mentioned less visit to air pump station.

Btw, I am kinda tempted to try ATR Sport 2 as my experience with el cheapo ATR Sport return an favourable feedback for its price. Noise generated by the deep hard directional tread aside, ATR Sport hold itself quite okay during aggressive driving. 240kpa is okay.
Aquaplaning resistance is better than some tyres twice its price. Don't expect the tyres to perform like Asymmetric 2 or S.Drive as you need to adapt to the the tyres limited capabilities. Forget about accurate steering feedback. All you need to do is trash it to the max and change as price is so cheap. Don't forget to monitor both side of sidewall from time to time.

 

[Roger89]

I understand the concern about the high psi. It's a good topic worth discussing.

So far I have gone with this pressure on daily driving without ill effect. Infact the pressure looks match when my rear is somewhere around 28psi. This is how I test it: drive a couple of kms so that the tyres heat up. Then get down the car and feel the tyres' temperature front and back. Compare them, if too hot - underinflated, not hot enuff - overinflated. Same for comparing front and rear over/under inflation.

Previously I was on 38psi and it was optimum until I cannot tahan and just pump it max psi. From visual inspection, the 44psi doesn't seem to have the bulge on the sidewall at the contact patch area. Tyres look more ready to roll at this psi :proud: Rolls easier too.

Have you all wondered what happens when u drive at highway speeds and suddenly go into a huge bump? The psi in the tyres can reach like 100psi if not mistaken. I dont have backing for this. But it goes surprisingly high..

 

[blitz]

bit suprise about the tire pressures..

last few week also, i went to MPS for val&allign my wheels, i found this guy that ride new VW golf (2 doors) that spoke to me that the tire pressure of his car a bit surprise.. around 41psi at 16inch rim.. first i found it very itchy but when u look the sticker (at the fuel cover), u can see clearly mention 41psi..

it's ok just follow the instruction given or just adjust it by our own comfort?

sticker a bit like this:

I believe the recommended tyre pressure is for German roads and not suitable for potholes infested Malaysian roads.... LOL....

 

[stupidcar]

These are a few info that I can find....

Maximum pressure is also stated on the tire sidewall. This is different for a tires recommended tire pressure. This number is the maximum cold pressure necessary to carry the maximum load for which the tire is rated.

TIRE MOUNTING

Tire mounting must be performed by specially trained personnel using proper tools and procedures. Failure to follow safe mounting procedures can result in faulty positioning of the tire and cause the assembly to burst with explosive force sufficient to cause serious personal injury and death. Clean rim and lubricate beads with rubber lubricant. Always lock rim on mounting machine or place assembly in safety cage. Use air hose with clip on chuck and extension air gauge. Never exceed maximum recommended PSI to seat beads on rim. Excessive air pressure can damage the tire and cause it to violently blow off the wheel. After mounting, adjust to recommended inflation pressure.

Maximum Air Pressure - "300 kPa [44 psi]"

This indicates the maximum operating inflation pressure of the tire. It does not indicate the manufacturer's recommended inflation pressure, nor does it indicate the proper air pressure based on the vehicle the tire is mounted on. This category is also based on NHTSA standards.

Using the max air pressure, when the tyres get hot when running will make the air pressure go over the max. Probably if want to use max pressure pump up to 40 to 42 to allow for heat expansion

Woah 44psi is killer high man.. max I ever put is 34psi can feel very bumpy.. daily use on hot weather pressure will rise couple of psi. Better dont gamble with max pressure.

Thanks fyi.
Yeah. I tot it's high too. Even the Vios it's the same.
So 40-42? I remembered it adjust itself automatically.
So should be below 40.

 

[vr2turbo]

+1 !

RM20 for 4 tyres and shop usually pump up to 91kpa of nitrogen with the rest is oxygen.
Surprisingly, my experience on nitrogen returned better fc. Stretch to average about 2km extra on every liter of fuel. Not to mentioned less visit to air pump station.

Btw, I am kinda tempted to try ATR Sport 2 as my experience with el cheapo ATR Sport return an favourable feedback for its price. Noise generated by the deep hard directional tread aside, ATR Sport hold itself quite okay during aggressive driving. 240kpa is okay.
Aquaplaning resistance is better than some tyres twice its price. Don't expect the tyres to perform like Asymmetric 2 or S.Drive as you need to adapt to the the tyres limited capabilities. Forget about accurate steering feedback. All you need to do is trash it to the max and change as price is so cheap. Don't forget to monitor both side of sidewall from time to time.

You got better mileage on nitrogen? That is good, but my friends who tried only felt less trip to top up only.

The ATR2 should be an improvement over the ATR, new model should be anyway, but they start at 17" and above.

---------- Post added at 08:31 AM ---------- 6 hour anti-bump limit - Previous post was at 08:24 AM ----------

I understand the concern about the high psi. It's a good topic worth discussing.

So far I have gone with this pressure on daily driving without ill effect. Infact the pressure looks match when my rear is somewhere around 28psi. This is how I test it: drive a couple of kms so that the tyres heat up. Then get down the car and feel the tyres' temperature front and back. Compare them, if too hot - underinflated, not hot enuff - overinflated. Same for comparing front and rear over/under inflation.

Previously I was on 38psi and it was optimum until I cannot tahan and just pump it max psi. From visual inspection, the 44psi doesn't seem to have the bulge on the sidewall at the contact patch area. Tyres look more ready to roll at this psi :proud: Rolls easier too.

Have you all wondered what happens when u drive at highway speeds and suddenly go into a huge bump? The psi in the tyres can reach like 100psi if not mistaken. I dont have backing for this. But it goes surprisingly high..

Bro., cannot use visual inspection. Read more here...
Tire Tech Information - Air Pressure - Correct, Underinflated and Overinflated

Moreover heat not only from tyres. In your next test, try driving a bit further then touch test your tyres again. The front should be much hotter then the rears. This is due to the heat coming from the front disc brakes

---------- Post added at 08:32 AM ---------- 6 hour anti-bump limit - Previous post was at 08:31 AM ----------

Thanks fyi.
Yeah. I tot it's high too. Even the Vios it's the same.
So 40-42? I remembered it adjust itself automatically.
So should be below 40.

Persona, Vios, 32 psi is enough.....

 

[Roger89]

Bro., cannot use visual inspection. Read more here...
Tire Tech Information - Air Pressure - Correct, Underinflated and Overinflated

Moreover heat not only from tyres. In your next test, try driving a bit further then touch test your tyres again. The front should be much hotter then the rears. This is due to the heat coming from the front disc brakes

Hehe.. I dunno. Many ways of looking at this with different cars / loads/ tyre size/ personal preference/ etc.

Keep experimenting.. but within limits.. I think the max psi is safe to call the limit for now :)

Currently use 44/27psi front-rear for my Wira 1.5. Crazy as it sounds but that's the load for my car. Front is much heavier. I can't understand why use 30psi as on the door placard since we know the front and rear load is different. Now when I drive, it drives like a dream car. Cornering is great and less understeer tendency which this car inherently have (actually it feels neutral, but we have been driving cars designed to understeer slightly anyway). Also seems a bit quieter since less rubber deformation on the tyres..

btw, I have not noticed any noticeable decrease in grip or in wet weather .. tyre wear should be fine.. will monitor..

 

[^pomen_GTR^]

but in long time watchout for this kind of wear...(over inflation..yes i also love to keep higher than recommended tyre pressure)

 

[vr2turbo]

Hehe.. I dunno. Many ways of looking at this with different cars / loads/ tyre size/ personal preference/ etc.

Keep experimenting.. but within limits.. I think the max psi is safe to call the limit for now :)

Currently use 44/27psi front-rear for my Wira 1.5. Crazy as it sounds but that's the load for my car. Front is much heavier. I can't understand why use 30psi as on the door placard since we know the front and rear load is different. Now when I drive, it drives like a dream car. Cornering is great and less understeer tendency which this car inherently have (actually it feels neutral, but we have been driving cars designed to understeer slightly anyway). Also seems a bit quieter since less rubber deformation on the tyres..

btw, I have not noticed any noticeable decrease in grip or in wet weather .. tyre wear should be fine.. will monitor..

I do put higher air pressure up front but by 2psi only, your more by 17psi....:hmmmm:

Well, if it works for you, good. No right or wrong about it....

Higher air pressure actually good for aquaplaning resistance but bad for dry traction, because less contact surface

---------- Post added at 03:16 PM ---------- 6 hour anti-bump limit - Previous post was at 03:07 PM ----------

but in long time watchout for this kind of wear...(over inflation..yes i also love to keep higher than recommended tyre pressure)

Tyre looks more like camber out, or your cornering very "keng"....
Higher air pressure will wear the center, wheres yours wear on one side only...

 

[infinity.melvin]

Guys any feedback for atr sports 2?? Tempted to try.. Currently on nexen n8000. Gatal to try new tyres. Seen several evos n subbies on these atr sports 2 tyres around sunway. Wonder how it hold up to 4wd madness.

Any idea about the price for 215/45/17?

 

[egb18c]

rm225 at setapak.PTS tyre shop(cant remember real name)
but that is for atr sport,no number 2

 

[vr2turbo]

Probably can gauge by adding a little more for ATR2...

 

[Kanzie]

I went shopping for ATR2, found out that everywhere out of stock for 215/45R17 :hmmmm:
Some says Achilles bought them back from dealers for sponsoring event?

 

[markblurberry]

Went with a fren to get the ATR Sport 2 at PTS, they have the stock but end up my friend took Achilles platinum...according to him, no problem, even quieter than his prev donut....overall satisfied in dry and wet condition