Bridgestone Firestone Off Road Tire Company

RADIAL GRADER LOAD / INFLATION TABLES

GRADER 40 KM/H = 25 MPH MAX SPEED CONVENTIONAL RADIAL TIRES DISTANCE = UNLIMITED BOLD FACE FIGURES DENOTE MAXIMUM LOAD FOR SYMBOLS SHOWN
TIRE SIZE DESIGNATION	TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES
	kPa	200	225	250	275	300	325	350	375
	psi	29	33	36	40	44	47	51	51
13.00R24	kg	1850	2000	2180	2360	2500	2650	2800	3000 1*
13.00R24	lbs.	4080	4400	4800	5200	5520	5840	6150	6600 1*
14.00R24	kg	2240	2430	2650	2800	3000	3250	3350	3650 1*
14.00R24	lbs.	4940	5360	5840	6150	6600	7150	7400	8050 1*
16.00R24	kg	2900	3150	3350	3650	3875	4125	4375	4625 1*
16.00R24	lbs.	6400	6950	7400	8050	8550	9100	9650	10200 1*

GRADER 40 KM/H = 25 MPH MAX SPEED WIDE BASE RADIAL TIRES DISTANCE = UNLIMITED BOLD FACE FIGURES DENOTE MAXIMUM LOAD FOR SYMBOLS SHOWN
TIRE SIZE DESIGNATION	TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES
	kPa	125	150	175	200	225	250	275	300
	psi	18	22	25	29	33	36	40	44
15.5R25	kg	1550	1750	2000	2180	2360	2575	2800	3000 1*
15.5R25	lbs.	3420	3860	4400	4800	5200	5680	6150	6600 1*
17.5R25	kg	1850	2120	2360	2650	2900	3075	3350	3650 1*
17.5R25	lbs.	4080	4680	5200	5840	6400	6800	7400	8050 1*
20.5R25	kg	2430	2800	3150	3450	3875	4125	4375	4625 1*
20.5R25	lbs.	5360	6150	6950	7600	8550	9100	9650	10200 1*
23.5R25	kg	3150	3550	4000	4500	4875	5300	5600	6000 1*
23.5R25	lbs.	6950	7850	8800	9900	10700	11700	12300	13200 1*

The variation in load caring capacity with operating speed
OPERATING SPEED		G
km/h	mph	-
STATIC	STATIC
CREEP	CREEP
4	2.5
10	5
15	9
20	12
25	15
30	19
35	22
40	25	0
45	28	-
50	30	-9%
55	34	-
60	37	-18%
65	40	-27%
70	44
75	47
80	50
80<	50<

Reference speed for calculating load variance