Tire Pressure Question
Posted: Sat May 30, 2015 7:38 pm
My '94 Elite came with 3.00-10 42J tires. Manaul states tire pressure should be 18psi Front, 33psi Rear. It looks like the original load rating 42 tires have a max of 331lbs at 36psi.
The replacement tires on there are a 3.00-10 50J max 419lbs at 47psi. The other is a 90/90-10 50J max 419lbs at 36psi.
Now, I work in automotive tire sales. Anytime you change tire sizes, or load ratings, you generally want to use the tire load charts to adjust the psi of the new tire to match the load capacity of the original tire at its recommended psi for the vehicle. The only motorcycle load charts I can find simply show max load at max psi. Nothing that shows the load carrying ability of the tire at different pressures.
Maybe I am overthinking my scooter, but I'd like to know what these tires capacity is at different pressures, not just max pressure.
I could just run them at the recommended pressure of the original tires, or I could just max them out at max psi to make sure the load carrying is there. But if you look at it lime this, the tire that is rated at 419lbs at 47 psi is not going to have the same load capacity as the 419lbs at 36psi if you were running 18psi in both tires. Make sense?
Anyway, does anyone know if such a load chart exists for motorcycle tires? If not, what is everyone running for air pressure with these different size and load rating tires?
The replacement tires on there are a 3.00-10 50J max 419lbs at 47psi. The other is a 90/90-10 50J max 419lbs at 36psi.
Now, I work in automotive tire sales. Anytime you change tire sizes, or load ratings, you generally want to use the tire load charts to adjust the psi of the new tire to match the load capacity of the original tire at its recommended psi for the vehicle. The only motorcycle load charts I can find simply show max load at max psi. Nothing that shows the load carrying ability of the tire at different pressures.
Maybe I am overthinking my scooter, but I'd like to know what these tires capacity is at different pressures, not just max pressure.
I could just run them at the recommended pressure of the original tires, or I could just max them out at max psi to make sure the load carrying is there. But if you look at it lime this, the tire that is rated at 419lbs at 47 psi is not going to have the same load capacity as the 419lbs at 36psi if you were running 18psi in both tires. Make sense?
Anyway, does anyone know if such a load chart exists for motorcycle tires? If not, what is everyone running for air pressure with these different size and load rating tires?