tire presure
Melting Slicks
Joined: Apr 2009
Posts: 2,632
Likes: 112
From: Great Plains Iowa
I already told you guys my left front tire had about 1 degree of positive camber when that picture was taken and I corrected it the next day. So get over it already.
The 4 Wheelparts.con gives excellent information but you guys failed to comprehend any of it because of your stubborn 30+ psi mindset. Rather than using chalk to test the tread pattern I used spray paint. After the paint dried I took it for a 10 mile drive and found 30 psi was way too much as the center wore out. Same with 25 psi but when I dropped it to 20 psi the paint wore off evenly.
Now I have another million dollar question for you. Why was 20 psi acceptable in 1974/1975 radial tires and now it isn't?
The 4 Wheelparts.con gives excellent information but you guys failed to comprehend any of it because of your stubborn 30+ psi mindset. Rather than using chalk to test the tread pattern I used spray paint. After the paint dried I took it for a 10 mile drive and found 30 psi was way too much as the center wore out. Same with 25 psi but when I dropped it to 20 psi the paint wore off evenly.
Now I have another million dollar question for you. Why was 20 psi acceptable in 1974/1975 radial tires and now it isn't?
Burning Brakes
Joined: Oct 2007
Posts: 1,086
Likes: 22
From: Crystal Lake IL
St. Jude Donor '12-'13
i dont ever remember 20psi ever being acceptable. maybe 24-28. sounds you may have the 20 psi mistaken for some other measurement. maybe something like 20 degrees tdc?
Drifting
Joined: Jan 2012
Posts: 1,908
Likes: 129
From: Fredericksburg Virginia
Please check Post #25 and Post #35 to this thread. I answered this question as directly as a human can answer it.
As I said many times before, insulting others will not win the day.
Not that there hasn't been a LOT of good input in this thread, but in my humble opinion, it was pretty much wrapped up at Post #35. Yet here you are dredging up some mud to sling around without reflecting on the simple, direct answers that have already been offered.
Why do we bother?
Last edited by keithinspace; Dec 17, 2015 at 12:41 PM.
Race Director
Joined: Apr 2007
Posts: 11,150
Likes: 890
From: South Western Ontario
BOTH edges are worn more than the center. If camber caused wear on one side then what wore down the other edge?
Drifting
Joined: Jan 2012
Posts: 1,908
Likes: 129
From: Fredericksburg Virginia
"Camber Wear" is clearly characterized as "inner OR outer wear"
"Edge Wear" (which is obviously what is happening in the picture) is characterized as "thin wear along tire edges".
Your tire is a TEXTBOOK example of an underinflated tire.
Last edited by keithinspace; Dec 17, 2015 at 12:36 PM.
Melting Slicks
Joined: Mar 2008
Posts: 2,989
Likes: 198
From: Meriden CT
I already told you guys my left front tire had about 1 degree of positive camber when that picture was taken and I corrected it the next day. So get over it already.
The 4 Wheelparts.con gives excellent information but you guys failed to comprehend any of it because of your stubborn 30+ psi mindset. Rather than using chalk to test the tread pattern I used spray paint. After the paint dried I took it for a 10 mile drive and found 30 psi was way too much as the center wore out. Same with 25 psi but when I dropped it to 20 psi the paint wore off evenly.
Now I have another million dollar question for you. Why was 20 psi acceptable in 1974/1975 radial tires and now it isn't?
The 4 Wheelparts.con gives excellent information but you guys failed to comprehend any of it because of your stubborn 30+ psi mindset. Rather than using chalk to test the tread pattern I used spray paint. After the paint dried I took it for a 10 mile drive and found 30 psi was way too much as the center wore out. Same with 25 psi but when I dropped it to 20 psi the paint wore off evenly.
Now I have another million dollar question for you. Why was 20 psi acceptable in 1974/1975 radial tires and now it isn't?
Melting Slicks
Joined: Apr 2009
Posts: 2,632
Likes: 112
From: Great Plains Iowa
Every time I go to the valley below I have to drive 10 miles on a twisty mountain road and then I have to drive on that same 10 mile mountain road to get back. The results of driving on mountain roads is the outer edges of the front tires wear. Those tires by the way now have over 30,000 miles on them and still have another 10,000 miles to go.
I have actually painted the treads of my tires over the past 20 years using white spray paint. Then I took it for a 10 mile drive to see how the paint wore and guess what happened when I ran 25 or 30 psi? THE CENTERS WORE OUT.
Now back to my million dollar question. Why was 20 psi safe in the 1974/1975 GR70-15 radial tires and now its not?
I have actually painted the treads of my tires over the past 20 years using white spray paint. Then I took it for a 10 mile drive to see how the paint wore and guess what happened when I ran 25 or 30 psi? THE CENTERS WORE OUT.
Now back to my million dollar question. Why was 20 psi safe in the 1974/1975 GR70-15 radial tires and now its not?
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Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
and yet again... another thread turned into a joke...
Hey!! i run my Jeep tires sometimes at like 20psi when out climbing around in the outback... does that count???
Hey!! i run my Jeep tires sometimes at like 20psi when out climbing around in the outback... does that count???
Last edited by pauldana; Dec 17, 2015 at 01:41 PM.
and he shall return to have the last word, even if it's wrong!
Burning Brakes
Joined: Oct 2008
Posts: 1,037
Likes: 14
From: Mobile Alabama
I guess the only thing ( in my mind) about keeping this thread going, is it cuts back on Capt. Superior's posting random instructional tips. Spray paint operation, headlight washing...etc
Maybe you can get him to measure the internal air temp of the tire at different pressures - after the 10 mile mountain run. The data would be just as worthless. But it would give him something to do.
Maybe you can get him to measure the internal air temp of the tire at different pressures - after the 10 mile mountain run. The data would be just as worthless. But it would give him something to do.
Last edited by 74modified; Dec 17, 2015 at 02:04 PM.
Burning Brakes
Joined: Jan 2012
Posts: 943
Likes: 73
I guess the only thing ( in my mind) about keeping this thread going, is it cuts back on Capt. Superior's posting random instructional tips. Spray paint operation, headlight washing...etc
Maybe you can get him to measure the internal air temp of the tire at different pressures - after the 10 mile mountain run. The data would be just as worthless. But it would give him something to do.
Maybe you can get him to measure the internal air temp of the tire at different pressures - after the 10 mile mountain run. The data would be just as worthless. But it would give him something to do.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I hate to say it but I took all the pressure out of one of my tires and the tread width was much larger than at 20psi or even 10psi,
However even though I get the widest tire patch I am hesitant to drive the car on flat tires even though it is in line with TooBroke's theory.
However even though I get the widest tire patch I am hesitant to drive the car on flat tires even though it is in line with TooBroke's theory.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I guess the only thing ( in my mind) about keeping this thread going, is it cuts back on Capt. Superior's posting random instructional tips. Spray paint operation, headlight washing...etc
Maybe you can get him to measure the internal air temp of the tire at different pressures - after the 10 mile mountain run. The data would be just as worthless. But it would give him something to do.
Maybe you can get him to measure the internal air temp of the tire at different pressures - after the 10 mile mountain run. The data would be just as worthless. But it would give him something to do.
Administrator
Joined: Jul 2000
Posts: 53,980
Likes: 6,207
From: About 1100 miles from where I call home.
OK, it's been fun, but I guess we can agree this debate has been discussed enough, if not settled.
I'd like to point out to the handful of posters who intermittently ask the moderators to close the thread to go back and look at the amount of times additional technical posts and positions have been made after those requests. If you don't think the thread has any further value, I'd suggest not posting to it again and again. Feeling that you have "won" the argument is not grounds for the discussion on an opinion forum to end.
Threads that have ceased offering discussion are closed. Threads that continue the discussion are not.
As I said earlier in the thread, if you feel a thread no longer has value, don't read it any more. There's no need to allow it to disrupt your day.
I'd like to point out to the handful of posters who intermittently ask the moderators to close the thread to go back and look at the amount of times additional technical posts and positions have been made after those requests. If you don't think the thread has any further value, I'd suggest not posting to it again and again. Feeling that you have "won" the argument is not grounds for the discussion on an opinion forum to end.
Threads that have ceased offering discussion are closed. Threads that continue the discussion are not.
As I said earlier in the thread, if you feel a thread no longer has value, don't read it any more. There's no need to allow it to disrupt your day.