Air Pressure on over size tires

[jlmurphy]

My Tires are 25x10.50x12 The tire manufature is suggesting 5 PSI max. When I purchased the cart it had 30 PSI in the tires and it was ruff riding. I dropped it to 5 PSI the ride is good but the tire get flat spots from the load. Does any one have any suggestions on air pressure

[OLD MEC]

The tire pressure doesnt have anything to do with flat spots. Its caused by the nylon or rayon cords changing shape and flattening out against a flat surface especially after its been hot out. I would stick with tire manufacurers recommendations. Some cart owners even go lower when they have stiff ride problems like you had before dropping pressure.

[dmax27]

Five psi in your tires seems very low. Have you tried using 15-20 psi to see how it rides. If your tires are 6 ply they may have a max psi of 50. I don't know for sure but 6 ply truck tires are load range C with a max tire pressure of 50 psi. Double check the side wall to see what it says.

dmax

[jlmurphy]

Thanks

[jlmurphy]

I am Trying 10 PSI front and 12 PSI rear. Hopeing for the best

[ackjay]

Originally Posted by jlmurphy

I am Trying 10 PSI front and 12 PSI rear. Hopeing for the best

If the manufacture says 5 psi max, I wouldn't go much higher than the 10/12 combo you are trying.
It sounds like you have ATV tires and we never ran more than 10 psi in them for woods/trail riding. Most generally 6-8 psi.

Good Luck!