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488 posts

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  # 1320897 10-Jun-2015 09:32
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heylinb4nz: Wheel alignment was done when fitted, and again after getting new lca bushings about 1 year later. I do tyre pressure once every month 38psi all round. Suspension is good, car only has 96,000kms. Car is only driven between hamilton, auckland, tauranga during that time, approx 15 trips. All the rest was town.


38Psi is really high!
can you post a pic of the tread?

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  # 1320899 10-Jun-2015 09:35
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hsvhel:
heylinb4nz: Wheel alignment was done when fitted, and again after getting new lca bushings about 1 year later. I do tyre pressure once every month 38psi all round. Suspension is good, car only has 96,000kms. Car is only driven between hamilton, auckland, tauranga during that time, approx 15 trips. All the rest was town.


38Psi is really high!
can you post a pic of the tread?


For a low profile tyre its not.

 
 
 
 


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  # 1320901 10-Jun-2015 09:35
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hsvhel:
heylinb4nz: Wheel alignment was done when fitted, and again after getting new lca bushings about 1 year later. I do tyre pressure once every month 38psi all round. Suspension is good, car only has 96,000kms. Car is only driven between hamilton, auckland, tauranga during that time, approx 15 trips. All the rest was town.


38Psi is really high!
can you post a pic of the tread?

38psi hot or cold?  Hot pressure probably not too bad, cold pressure - too high

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  # 1320924 10-Jun-2015 09:48
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kiwitrc:
hsvhel:
heylinb4nz: Wheel alignment was done when fitted, and again after getting new lca bushings about 1 year later. I do tyre pressure once every month 38psi all round. Suspension is good, car only has 96,000kms. Car is only driven between hamilton, auckland, tauranga during that time, approx 15 trips. All the rest was town.


38Psi is really high!
can you post a pic of the tread?


For a low profile tyre its not.


I'm running 255/30/R20 on my commodore, and they're only 32 front 34 rear, cold.
My track tires are 40 pound cold and they're slicks. 
38 is up there
Can you post a pic of the tyre face? what is the tread wear like


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  # 1320945 10-Jun-2015 10:12
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Didn't Falken recently change some of their tread compounds to new, soft silicon polymer? I'd say you need to look at a harder (longer wearing, but less grippy) road rubber in your next set.
As someon'es already mentioned, along with profile and tread pattern, the tread compound's important in the balance between grip, noise, ride quality, rolling resitance.. and wear.

My wife once destroyed an expensive set of R-compound tires by driving them on (about 10km of) gravel road..
Recently she shredded a set of tires when one of the kids bumped the “emergcency lockup” switch I'd installed in her Subie's centre diff – for beach use only – and she drove 150km with it locked..

Do you ever notice any grabbing/juddering when you reverse in a tight turn on asphalt (like out of a parking spot at a supermarket)? A Subie with centre diff problems will de-tread a set of tires quickly.



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  # 1321982 10-Jun-2015 11:47
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Sidestep: Didn't Falken recently change some of their tread compounds to new, soft silicon polymer? I'd say you need to look at a harder (longer wearing, but less grippy) road rubber in your next set.
As someon'es already mentioned, along with profile and tread pattern, the tread compound's important in the balance between grip, noise, ride quality, rolling resitance.. and wear.

My wife once destroyed an expensive set of R-compound tires by driving them on (about 10km of) gravel road..
Recently she shredded a set of tires when one of the kids bumped the “emergcency lockup” switch I'd installed in her Subie's centre diff – for beach use only – and she drove 150km with it locked..

Do you ever notice any grabbing/juddering when you reverse in a tight turn on asphalt (like out of a parking spot at a supermarket)? A Subie with centre diff problems will de-tread a set of tires quickly.


If you reverse up a hill there is a groaning\creaking sound coming from the centre rear of the car when under load, doesnt happen that often though.

I should mention the tire wear is on the fronts, the rear tires have been going strong for 33,000 kms and counting (Bridgestone Playz)..most likely closer to 40,000 as they came fitted out of Japan.



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  # 1321984 10-Jun-2015 11:50
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bigreddog:
hsvhel:
heylinb4nz: Wheel alignment was done when fitted, and again after getting new lca bushings about 1 year later. I do tyre pressure once every month 38psi all round. Suspension is good, car only has 96,000kms. Car is only driven between hamilton, auckland, tauranga during that time, approx 15 trips. All the rest was town.


38Psi is really high!
can you post a pic of the tread?

38psi hot or cold?  Hot pressure probably not too bad, cold pressure - too high


38psi warm\hot

Anything lower the tyres dont feel as sharp in the corners.

 
 
 
 




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  # 1321985 10-Jun-2015 11:50
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bigreddog:
hsvhel:
heylinb4nz: Wheel alignment was done when fitted, and again after getting new lca bushings about 1 year later. I do tyre pressure once every month 38psi all round. Suspension is good, car only has 96,000kms. Car is only driven between hamilton, auckland, tauranga during that time, approx 15 trips. All the rest was town.


38Psi is really high!
can you post a pic of the tread?

38psi hot or cold?  Hot pressure probably not too bad, cold pressure - too high


38psi warm\hot

Anything lower the tyres dont feel as sharp in the corners.

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  # 1321989 10-Jun-2015 12:00
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heylinb4nz:
Sidestep: Didn't Falken recently change some of their tread compounds to new, soft silicon polymer? I'd say you need to look at a harder (longer wearing, but less grippy) road rubber in your next set.
As someon'es already mentioned, along with profile and tread pattern, the tread compound's important in the balance between grip, noise, ride quality, rolling resitance.. and wear.

My wife once destroyed an expensive set of R-compound tires by driving them on (about 10km of) gravel road..
Recently she shredded a set of tires when one of the kids bumped the “emergcency lockup” switch I'd installed in her Subie's centre diff – for beach use only – and she drove 150km with it locked..

Do you ever notice any grabbing/juddering when you reverse in a tight turn on asphalt (like out of a parking spot at a supermarket)? A Subie with centre diff problems will de-tread a set of tires quickly.


If you reverse up a hill there is a groaning\creaking sound coming from the centre rear of the car when under load, doesnt happen that often though.

I should mention the tire wear is on the fronts, the rear tires have been going strong for 33,000 kms and counting (Bridgestone Playz)..most likely closer to 40,000 as they came fitted out of Japan.


Is it worth swapping the front tyres to the rear, or are they too far gone?



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  # 1322104 10-Jun-2015 13:33
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jonb:
heylinb4nz:
Sidestep: Didn't Falken recently change some of their tread compounds to new, soft silicon polymer? I'd say you need to look at a harder (longer wearing, but less grippy) road rubber in your next set.
As someon'es already mentioned, along with profile and tread pattern, the tread compound's important in the balance between grip, noise, ride quality, rolling resitance.. and wear.

My wife once destroyed an expensive set of R-compound tires by driving them on (about 10km of) gravel road..
Recently she shredded a set of tires when one of the kids bumped the “emergcency lockup” switch I'd installed in her Subie's centre diff – for beach use only – and she drove 150km with it locked..

Do you ever notice any grabbing/juddering when you reverse in a tight turn on asphalt (like out of a parking spot at a supermarket)? A Subie with centre diff problems will de-tread a set of tires quickly.


If you reverse up a hill there is a groaning\creaking sound coming from the centre rear of the car when under load, doesnt happen that often though.

I should mention the tire wear is on the fronts, the rear tires have been going strong for 33,000 kms and counting (Bridgestone Playz)..most likely closer to 40,000 as they came fitted out of Japan.


Is it worth swapping the front tyres to the rear, or are they too far gone?


Might be worth a shot, the rears are about the same level of wear.

Im thinking I may just change them all out in 6 months anyway.

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  # 1322146 10-Jun-2015 14:02
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A little off topic, but If you have these lower profile tyres, where usually the tyres tread on the road is a lot wider, do the tyres wear out slower than you standard thinner tyres? I am guessing they should due to more surface area carrying the load.

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  # 1322149 10-Jun-2015 14:04
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hsvhel:
My track tires are 40 pound cold and they're slicks. 


Sorry, off topic here, but wow - that's high!
I run my slicks at significantly lower pressure than street rubber (about 24psi cold)  Do you mind elaborating on why you're choosing to run them that way?

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  # 1322172 10-Jun-2015 14:19
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agreed i think i was at about 24/26 with my semis and they ended up being close to 36ish when hot.

i have 225/45/17's on my accord and run them at 36 cold as that what my 2 tyre guy friends recommended. i trust them.

IMO the lower the profile the higher the pressure. it protects your rims with low profile tires.

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  # 1322174 10-Jun-2015 14:21
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jonb:
heylinb4nz:
Sidestep: Didn't Falken recently change some of their tread compounds to new, soft silicon polymer? I'd say you need to look at a harder (longer wearing, but less grippy) road rubber in your next set.
As someon'es already mentioned, along with profile and tread pattern, the tread compound's important in the balance between grip, noise, ride quality, rolling resitance.. and wear.

My wife once destroyed an expensive set of R-compound tires by driving them on (about 10km of) gravel road..
Recently she shredded a set of tires when one of the kids bumped the “emergcency lockup” switch I'd installed in her Subie's centre diff – for beach use only – and she drove 150km with it locked..

Do you ever notice any grabbing/juddering when you reverse in a tight turn on asphalt (like out of a parking spot at a supermarket)? A Subie with centre diff problems will de-tread a set of tires quickly.


If you reverse up a hill there is a groaning\creaking sound coming from the centre rear of the car when under load, doesnt happen that often though.

I should mention the tire wear is on the fronts, the rear tires have been going strong for 33,000 kms and counting (Bridgestone Playz)..most likely closer to 40,000 as they came fitted out of Japan.


Is it worth swapping the front tyres to the rear, or are they too far gone?


No don't do that. Better thread should be at the back.





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  # 1322207 10-Jun-2015 14:35
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nakedmolerat:
jonb:
heylinb4nz:
Sidestep: Didn't Falken recently change some of their tread compounds to new, soft silicon polymer? I'd say you need to look at a harder (longer wearing, but less grippy) road rubber in your next set.
As someon'es already mentioned, along with profile and tread pattern, the tread compound's important in the balance between grip, noise, ride quality, rolling resitance.. and wear.

My wife once destroyed an expensive set of R-compound tires by driving them on (about 10km of) gravel road..
Recently she shredded a set of tires when one of the kids bumped the “emergcency lockup” switch I'd installed in her Subie's centre diff – for beach use only – and she drove 150km with it locked..

Do you ever notice any grabbing/juddering when you reverse in a tight turn on asphalt (like out of a parking spot at a supermarket)? A Subie with centre diff problems will de-tread a set of tires quickly.


If you reverse up a hill there is a groaning\creaking sound coming from the centre rear of the car when under load, doesnt happen that often though.

I should mention the tire wear is on the fronts, the rear tires have been going strong for 33,000 kms and counting (Bridgestone Playz)..most likely closer to 40,000 as they came fitted out of Japan.


Is it worth swapping the front tyres to the rear, or are they too far gone?


No don't do that. Better thread should be at the back.

Really?  I'd run the better tread on the front as that does your steering and are the first set to clear water with the rears mostly tracking in their wake.

Also on main topic, I'm surprised if I get more than 20k out of a set of tyres as I prefer grip to lifespan.

As for pressure, I run 36-38 all round on the road.  Race semi-slicks and gravel tyres I aim to run at 31-32psi when hot so vary the cold pressure to suit the event.
A lot of it is personal preference and advice.




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