PSI question

[wifisher]

Re: PSI question

WRONG......too much air cause wear on outside edges. Check this link to see what manufaturer has to say..... www.carlisletire.com/product_care/trailer_tire_service_guide.pdf

WRONG.....too much air will cause excessive wear to the center of the tread pattern.

 

[oldjeep]

Re: PSI question

Ugg, next thing that you guys will be claiming is that I should air down the tires on semi trailers when the box is empty. Read the manufacturers statements and then do whatever you feel like.

 

[bigdee]

Re: PSI question

WRONG......too much air cause wear on outside edges. Check this link to see what manufaturer has to say..... www.carlisletire.com/product_care/trailer_tire_service_guide.pdf

Maybe this was a misprint but Carlisle also stated that this only applied to their trailer tires......I know the opposite is true for car tires.

 

[eric hall]

Re: PSI question

Basically tyres are fabricated with several layers of material (sorry if I sound patronising) either nylon or steel and rubber. The more plies that a tyre has the higher load it will carry. These materials flex as the tyre rotates, the more they flex the more friction is built up and more heat is generated causing the tyre to delaminate,the fabrics separate and eventually the tyre blows out. The harder the tyre ie the pressure inside the higher load it will support as it does nor flex so much (Only up the manufacturers spec). Buy the right tyre for the job.

 

[wbc1957]

Re: PSI question

The Max inflation battle continues, but you can't blame me this time. I thought it was funny that Smoke states it's Fact for you to need to inflate at max pressure on ths sidewall. Which follows the logic, when in doubt take the easy way out and use max inflation. Doesn't mean it's right, just a way out for those that choose to not do the research. If your post count is high, you must be the expert, right?

 

[wifisher]

Re: PSI question

The Max inflation battle continues, but you can't blame me this time. I thought it was funny that Smoke states it's Fact for you to need to inflate at max pressure on ths sidewall. Which follows the logic, when in doubt take the easy way out and use max inflation. Doesn't mean it's right, just a way out for those that choose to not do the research. If your post count is high, you must be the expert, right?

It really has nothing to do with post count. It is also recommended by every tire manufacturer that I know of. By your post, I assume that you have done research that disagrees with this? Could you kindly show it to us? And then maybe forward it on to the R&D dept of some tire manufacturers. They would probably be glad to hear about how they are doing it all wrong.

 

[Titanium48]

Re: PSI question

Some interesting info from Goodyear:

http://www.goodyear.com/rv/pdf/rv_inflation.pdf
A load-inflation table for ST tires. This suggests that it is OK to lower the inflation pressure if the tires are loaded below their maximum load rating.

http://www.goodyear.com/rv/pdf/marathon_gen_info_032806.pdf
Some general recommendations regarding trailer tires. These include setting the pressure to the trailer manufacturer's specification and increasing the pressure by 10 psi if towing faster than 65 MPH (up to a maximum of 75 MPH).

So what do you do if you replace your OEM load range C tires with load range E but your actual load is still below the maximum for LR C tires? Goodyear seems to be saying you should inflate them to 50 psi, or 60 psi if you plan on going faster than 65 MPH. No need to air them up to the 80 psi specified for the maximum load rating.