Tire Ply Rating + Load Index Chart (Embed)

Filter by vehicle type (tap to filter the chart below)

Sidewall code or load index

Accepts 235/65R17 104H, LT265/70R17 E, ST225/75R15 D, 121, or Load Range E.

Load Index → capacity

LI 121 · 1450 kg · 3197 lb

60 (250 kg) 100 (800 kg) 150 (3,350 kg)

Load Range / Ply

E 10-ply

equivalent strength

Max cold PSI

80 psi

sidewall maximum

Capacity per tire

3,197 lb

or 1,450 kg (LI 121)

Light Truck (LT) tire, Load Range E (10-ply equivalent), max 80 psi cold, load index 121 = 3,197 lb per tire. Sized for half-ton and ¾-ton pickups, heavy towing.

Heavy-duty

Load Range cross-reference

Showing all classes

Load Range	Ply	Max PSI	Typical use	Severity
A	2-ply	35 psi	Light-duty light trailer, golf cart	light
B	4-ply	35 psi	Passenger cars, small utility trailer	light
C	6-ply	50 psi	Light truck, medium trailer, light SUV	medium
D	8-ply	65 psi	Heavy-duty trailer, ½-ton truck, SUV	medium
E	10-ply	80 psi	Full-size truck (¾-ton, 1-ton), heavy towing	heavy
F	12-ply	95 psi	Commercial truck, large trailer	heavy
G	14-ply	110 psi	Heavy-duty commercial trailer	commercial
H	16-ply	120 psi	Extreme heavy-duty commercial	commercial
J	18-ply	130 psi	Specialty heavy commercial	commercial
L	20-ply	135 psi	Specialty heavy commercial / off-road	commercial
M	22-ply	145 psi	Specialty commercial / military	commercial
N	24-ply	150 psi	Specialty commercial / military	commercial

Modern radial tires rarely use literal plies — "10-ply" is the strength equivalent of old bias-ply construction. The Load Range letter is what's stamped on the sidewall.

Reference values from ETRTO / TRA / JATMA standards. Always verify against the actual tire sidewall, manufacturer's load tables, or your door-jamb sticker before exceeding stock load capacity. Trailer (ST) and light-truck (LT) tires use different load tables than passenger (P) tires — match the application. Higher load range means stiffer ride; do not over-pressurize past the sidewall maximum.