M/T 28X6X18 front runner air pressure?

[LSchicago]

That tire is a trailer tire. While its great for our heavy cars, its insanely heavy. I swapped from that tire to the new et street r front in the same size. Like 12lbs lighter each. HIGHLY recommend. Its also a touch shorter too, which makes it fit better in the wheel well. I always thought the SR was a bit too tall.

MT shows 18# each for those, which should be 7.4# each less than the S/R's. At least both are rated for the S550 Front weight. The 26X6X18 are not rated for our cars, even at 50psi.

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[melwff]

Yes, 28" not 26".

Correct, looked at wrong tire. Your vehicle though is nowhere near the maximum load so the pressure should be adjusted based on vehicle weight which I believe can be found online.

 

[LSchicago]

Correct, looked at wrong tire. Your vehicle though is nowhere near the maximum load so the pressure should be adjusted based on vehicle weight which I believe can be found online.

65-70psi should be all it needs, but 80PSI should offer less rolling resistance. I saw on other forums that guys use 70# all the way up to 95#. I don't want to run them at
max.

 

[80FoxCoupe]

MT shows 18# each for those, which should be 7.4# each less than the S/R's. At least both are rated for the S550 Front weight. The 26X6X18 are not rated for our cars, even at 50psi.

I weighed them and had it wrote down somewhere. Was a tick over 11lbs on my scale.

 

[LSchicago]

I set them at 75psi.

 

[WildHorse]

M/T says 75% of the max psi. So 71 psi. Mine are at 70 psi haha.

 

[melwff]

If the vehicle weighs 3865 and 53% is on the front each front corner weighs
1024. 1024/1650*95=59psi.
Or am I off base on figuring it that way?

 

[LSchicago]

If the vehicle weighs 3865 and 53% is on the front each front corner weighs
1024. 1024/1650*95=59psi.
Or am I off base on figuring it that way?

Also have to figure in driver/passenger weight. I'd say that weight is about right for my car, but probably a good 150# more on the front for me, and If my friend comes about the same for him. I am 330# myself.

 

[LSchicago]

That tire is a trailer tire. While its great for our heavy cars, its insanely heavy. I swapped from that tire to the new et street r front in the same size. Like 12lbs lighter each. HIGHLY recommend. Its also a touch shorter too, which makes it fit better in the wheel well. I always thought the SR was a bit too tall.

Turns out the 28" SR is too tall. It rubbed one of my fenders, so I'm not able to use them with Steeda's drag springs.

 

[80FoxCoupe]

Turns out the 28" SR is too tall. It rubbed one of my fenders, so I'm not able to use them with Steeda's drag springs.

Its a big ol tire. If MT made that in a 27in diameter that would be perfect.

 

[LSchicago]

Its a big ol tire. If MT made that in a 27in diameter that would be perfect.

I 100% agree. 26" would be overloaded on my car.

 

[80FoxCoupe]

I 100% agree. 26" would be overloaded on my car.

And it would look tiny.

 

[Cory S]

I run mine at 62-65psi street driving. At the strip, I will bump them up to 75-80. On stock ride height. Anything more and the ride gets a little harsh IMO.

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