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To determine tire size you should do a rolling circumference test.Air all 4 tires up to exactly 30 PSI. Use a good gauge, not a pencil type cheapy. Take chalk and mark down the sidewall and onto the pavement. Roll the rig one full tire revolution until the marks hit the ground. Mark the ground and measure all 4 marks. Put the 2 tires most equal on the rear axle.
To determine tire size you should do a rolling circumference test.
Air all 4 tires up to exactly 30 PSI. Use a good gauge, not a pencil type cheapy. Take chalk and mark down the sidewall and onto the pavement. Roll the rig one full tire revolution until the marks hit the ground. Mark the ground and measure all 4 marks. Put the 2 tires most equal on the rear axle.
