Front tire pressure

liberty2701 · Sep 25, 2015

I just noticed after having to replace one of my front tires ( 8-16 r1 Dk50) that the sidewall says max28 psi. The manual says 35 psi. Who is correct?

txdon · Sep 25, 2015

I had the same question with my Kubota and went with the higher number because of the FEL.

liberty2701 · Sep 25, 2015

Did you confirm that was the right thing to do with anyone? Just wondering if the higher pressure will stress the sidewall?

CobyRupert · Sep 25, 2015

That seems like a very low maximum psi? I've found that with other tires, the max psi is usually multiple times the "normal" running psi. In the big scheme of things there's not a big difference between 28 and 35psi (20% or 25%, depending on how you look at it). With some of my cheap gauges I could put 31.5 PSI in a tire and one gauge would read 29 psi and another 34 psi.

I would think a low psi would stress the sidewall because it has to flex more with every rotation. (Ever feel how hot a soft tire gets that's been run down the road?)

Do you have a FEL?
Put enough air in so they don't squat too bad and don't worry about it (or feel the need to quantify).

txdon · Sep 25, 2015

liberty2701 said:
Did you confirm that was the right thing to do with anyone? Just wondering if the higher pressure will stress the sidewall?

I did not, but I have seen air leak out by the rim with the FEL full of mud and lower air pressure. The air stopped leaking under a load with higher pressure. I should have asks If you had a FEL or were just mowing without a FEL.