SIZE	PLY	PATTERN	TREAD DEPTH (MM)	RIM WIDTH	MAX SECTION WIDTH (MM)	OVERALL TIRE DIAMETER (MM)	MAX LOAD (LBS)	PSI
18×8.50-8	4	AP510	6.0	7.00	214	450	815	22
18×8.50-8	2	AP510	6.0	7.00	214	450	515	10