Front tire/wheel assembly upgrade to a F/T SD 54"

I have a 8 yr SD with suspension forks, tires are 13 X 5. - 6. Really tired of airing up the tires every time I mow. Looking into replacing these with flat free tires. My question is to the sizing of the tires. Presuming the 5.00 is the width of the tire. So far all I've found is 13 X 6.5 - 6 with the corresponding arbor of .75. If I'm right, and hoping someone with any knowledge of this will chime in, the 6.5 will not fit the fork. Thanks

Measure the inside of your forks. On the new tire make sure the arbor is not offset.

Thanks for the reply BlazNT. :thumbsup: I finally found wheels and tires from a mower/parts company in Waco that fit what I needed right down to the same color wheels. Size is equal and flat free which I really need due to mesquite trees on my property.

I put half a pint of tire slime in each of my fronts and they have held air for three years now. Various solutions I guess.