DR424^™

Regional drive radial optimized for long mileage and excellent traction

Open shoulder design helps provide exceptional traction on dry, wet and snow covered surfaces.

Full depth sipes for excellent traction throughout life of tire.

Tread compound tailored for regional service.

All-steel construction for excellent retreadability.

LR	Catalog Number	Loaded Radius (in)	Overall Diameter (in)	Overall Width(in)	Approved Rims	Min. Dual Spacing (in)	RPM	Tread Depth (32nds)	Max Speed (mph)	Max Load Per Tire Single lbs./psi	Max Load Per Tire Dual lbs./psi	Tire Weight (lbs)
G	57721	18.6	40.0	10.5	8.25, 8.25, 7.50	11.7	517	21	75	5675/115	5355/115	97.5
G	66509	19.3	41.5	11.2	8.25, 7.50	12.5	500	24	75	6175/105	5840/105	114.2
G	85264	18.8	40.3	10.9	8.25, 7.50	12.2	514	24	75	6175/110	5675/110	108.0

LR	Catalog Number	Loaded Radius (mm)	Overall Diameter (mm)	Overall Width(mm)	Approved Rims	Min. Dual Spacing (mm)	RPKM	Tread Depth (mm)	Max Speed (kph)	Max Load Per Tire Single kg./kPa	Max Load Per Tire Dual kg./kPa	Tire Weight (kg)
G	57721	474	1016	266	8.25, 8.25, 7.50	297	321	17	121	2575/790	2430/790	44.2
G	66509	489	1055	285	8.25, 7.50	318	311	19	121	2800/720	2650/720	51.8
G	85264	477	1024	277	8.25, 7.50	311	319	19	121	2800/760	2575/760	49.0

Size	10R22.5	11R22.5	275/80R22.5
LR	G	G	G
Catalog Number	57721	66509	85264
Loaded Radius (in)	18.6	19.3	18.8
Overall Diameter (in)	40.0	41.5	40.3
Overall Width(in)	10.5	11.2	10.9
Approved Rims	8.25, 8.25, 7.50	8.25, 7.50	8.25, 7.50
Min. Dual Spacing (in)	11.7	12.5	12.2
RPM	517	500	514
Tread Depth (32nds)	21	24	24
Max Speed (mph)	75	75	75
Max Load Per Tire Single lbs./psi	5675/115	6175/105	6175/110
Max Load Per Tire Dual lbs./psi	5355/115	5840/105	5675/110
Tire Weight (lbs)	97	114	108

Size	10R22.5	11R22.5	275/80R22.5
LR	G	G	G
Catalog Number	57721	66509	85264
Loaded Radius (mm)	473.7	489.4	476.6
Overall Diameter (mm)	1016.0	1054.9	1024.4
Overall Width(mm)	265.5	284.5	276.9
Approved Rims	8.25, 8.25, 7.50	8.25, 7.50	8.25, 7.50
Min. Dual Spacing (mm)	297.0	318.0	311.0
RPKM	321	311	319
Tread Depth (mm)	17	19	19
Max Speed (kph)	121	121	121
Max Load Per Tire Single kg./kPa	2575/790	2800/720	2800/760
Max Load Per Tire Dual kg./kPa	2430/790	2650/720	2575/760
Tire Weight (kg)	44.2	51.8	49.0

	psi kPa	lbs.		kg.
	psi kPa	Single	Dual	Single	Dual
Loads per Axle	70 480	8160	15440	3700	7000
	75 520	8560	16180	3880	7320
	80 550	8960	16920	4060	7640
	85 590	9350	17640	4240	8000
	90 620	9700	18340	4400	8320
	95 660	10050	19040	4560	8640
	100 690	10410	19760	4720	8960
	105 720	10720	20300	4860	9200
	110 760	11030	20840	5000	9440
	115 790	11350	21420	5150	9720
Max Load & Pressure on Sidewall		115 psi	115 psi	790 kPa	790 kPa
Max Load & Pressure on Sidewall		5675	5355	2575	2430

	psi kPa	lbs.		kg.
	psi kPa	Single	Dual	Single	Dual
Loads per Axle	70 480	9060	17520	4100	7960
	75 520	9540	18320	4320	8320
	80 550	9980	19040	4520	8640
	85 590	10440	19800	4740	9000
	90 620	11020	20820	5000	9440
	95 660	11460	21660	5200	9840
	100 690	11900	22500	5400	10240
	105 720	12350	23360	5600	10600
Max Load & Pressure on Sidewall		105 psi	105 psi	720 kPa	720 kPa
Max Load & Pressure on Sidewall		6175	5840	2800	2650

	psi kPa	lbs.		kg.
	psi kPa	Single	Dual	Single	Dual
Loads per Axle	70 480	9000	16380	4080	7440
	75 520	9450	17200	4280	7800
	80 550	9880	18160	4480	8240
	85 590	10310	18760	4680	8520
	90 620	10740	19540	4880	8880
	95 660	11020	20280	5000	9200
	100 690	11560	21040	5240	9560
	105 720	11960	21760	5420	9880
	110 760	12350	22700	5600	10300
Max Load & Pressure on Sidewall		110 psi	110 psi	760 kPa	760 kPa
Max Load & Pressure on Sidewall		6175	5675	2800	2575

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DR424™