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Ironhead Thrasher R/T RTD01 37X12.50R20 E/10PLY

Truck/SUV - Snow/Winter
All Terrain

45K Mile Warranty

Rims Not Included

easy test score

7.2 Great

Availability

In Stock

Per Tire:

$283.86

$9.44

Estimated Delivery

Shipping

Total

See full specs

About the Manufacturer:

Ironhead Tires, founded in 1952 in the USA, is a specialized brand known for its durable and value-driven commercial truck tires. Operating via the Hercules Tire global network in over 90 countries, Ironhead Tires is trusted for robust construction and reliable performance in demanding applications, offering longevity, superior load capacity, and cost-effectiveness for commercial trucks, buses, and trailers. Hercules Tire, manufacturer of Ironhead, is the Official Tire of the National Tractor Pullers Association (NTPA), showcasing the toughness aligned with Ironhead's ethos.

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Specifications

Specs

Value

Description

Sidewall

Not Available

Describes the sidewall appearance. Examples: BSW= Black Side Wall, WSW = White Side Wall, OWL = Outlined White Letters.

Load Index

126

The load index (LI) is a 2- or 3-digit number that correlates to the maximum amount of weight the tire can carry. For example, a tire with a load index of 87 indicates that the tire can carry a maximum load of 1,201 lbs. In this particularly example, 4 tires (each with a load index of 87) can carry a maximum of 4,804 lbs. Refer to your vehicle owner's manual for the recommended minimum load index.

Speed Rating

Speed rating (SR) indicates the maximum speed the tire can achieve. Higher speed ratings are typically associated with better handling capabilities. Refer to your vehicle owner's manual for the recommended minimum speed rating.

Load Range/Ply Rating

E/10PLY

Ply rating, more commonly referred to as load range, represents the strength and durability of the tire. Higher ratings may indicate your tires can handle heavier loads.

UTQG

Not Available

To help consumers evaluate their tires, the U.S. National Highway Traffic Safety Administration (NHTSA) created the Uniform Tire Quality Grading System (UTQG). The UTQG rates tires are rated on their tread-wear, traction performance, and temperature resistance. The grade for each of these can be found on the sidewall of your tire (except for winter tires and certain light truck tires).

Max Single Load(lbs)

3750

The maximum load this tire will support. Remember to multiply this number by the number of tires installed on your vehicle to get the maximum carrying capacity. This number is directly related to the Load Index.

Max Single Air Pressure(PSI)

The maximum air pressure this tire will support. This does not represent the amount of air pressure your tires should have at all times. Consult with your owner's manual to determine the best air pressure you should use for your vehicle.

Tread Depth

18.0

The amount of tread on the tire. Once the tire is worn to 2/32nds, it is considered fully used and should be replaced at that time. Most tires will have tire indicators in the grooves of the tire to help you determine when the tires are worn down to 2/32nds.

Tread Design

Nondirectional

The pattern of the grooves, lugs, voids, and sipes on a tire's surface. This design affects the tire's traction, handling, and noise characteristics. Common types include symmetrical (uniform pattern across the tire), asymmetrical (different patterns on the inside and outside for varied road conditions), and directional (designed to rotate in one direction for improved wet traction and hydroplaning resistance).

Rim Width Range

Not Available

The approved wheel rim width range this tire will support.

Measured Rim Width

Not Available

The recommended wheel width as recommended by the tire manufacturer to get the best wear us performance for this tire.

Section Width

12.5

The measurement from sidewall to sidewall.

Tread Width

Not Available

The measurement from one side of the tread to the other side of the tread.

Overall Diameter

36.5

The height of the tire when fully inflated.

Manufacturer Part Number

IHRT20K

Manufacturer part number (sku)

Size Details

Size	Load Index/ Speed index	UTQG	Load Range/Ply Rating	Overall Diameter	Section Width	Rim Width Min	Rim Width Max	Rim Width Meas	Tread Depth (in)	Max Single Air Pressure (PSI)	Max Single Load (lbs)	Max Dual Air Pressure (PSI)	Max Dual Load (lbs)	MFG #
33X12.50R17	120Q	-	E/10PLY	32.5	12.5	-	-	-	18.0	65	3085	-	-	IHRT11K
33X12.50R18	122Q	-	F/12PLY	32.5	12.5	-	-	-	18.0	80	3305	-	-	IHRT14K
33X12.50R20	119Q	-	F/12PLY	32.5	12.5	-	-	-	18.0	80	3000	-	-	IHRT17K
33X12.50R22	114Q	-	F/12PLY	32.5	12.5	-	-	-	18.0	80	2600	-	-	IHRT21K
35X12.50R17	125Q	-	E/10PLY	34.5	12.5	-	-	-	18.0	80	3640	-	-	IHRT12K
35X12.50R18	128Q	-	F/12PLY	34.5	12.5	-	-	-	18.0	80	3970	-	-	IHRT15K
35X12.50R20	125Q	-	F/12PLY	34.5	12.5	-	-	-	18.0	80	3640	-	-	IHRT18K
35X12.50R22	121Q	-	F/12PLY	34.5	12.5	-	-	-	18.0	80	3195	-	-	IHRT22K
35X13.50R20	126Q	-	F/12PLY	34.5	13.5	-	-	-	18.0	80	3750	-	-	IHRT19K
37X12.50R17	124Q	-	D/8PLY	36.5	12.5	-	-	-	18.0	80	3525	-	-	IHRT13K
37X12.50R18	128Q	-	E/10PLY	36.5	12.5	-	-	-	18.0	76	3968	-	-	IHRT16K
37X12.50R20	126Q	-	E/10PLY	36.5	12.5	-	-	-	18.0	80	3750	-	-	IHRT20K
37X12.50R22	127Q	-	F/12PLY	36.5	12.5	-	-	-	18.0	80	3860	-	-	IHRT23K
37X13.50R22	128Q	-	F/12PLY	36.5	13.5	-	-	-	18.0	80	3970	-	-	IHRT24K
LT245/70R17	119/116Q	-	E/10PLY	30.5	9.7	-	-	-	18.0	80	3000	55	2755	IHRT25K
LT245/75R17	121/118Q	-	E/10PLY	31.4	9.7	-	-	-	18.0	80	3195	10	2910	IHRT26K
255/70R18	116T	600AB		32.0	10.2	-	-	-	16.0	50	2756	-	-	IHRT02K
265/50R20	111T	600AB		30.4	10.9	-	-	-	16.0	50	2403	-	-	IHRT07K
265/60R18	114S	600AB		30.5	10.7	-	-	-	16.0	50	2601	-	-	IHRT03K
265/65R18	116T	600AB		31.5	10.7	-	-	-	16.0	50	2756	-	-	IHRT04K
LT265/65R18	122/119Q	-	E/10PLY	31.5	10.7	-	-	-	18.0	80	3305	0	3000	IHRT29K
265/70R17	115T	600AB		31.6	10.7	-	-	-	16.0	44	2679	-	-	IHRT01K
LT265/70R17	123/120Q	-	E/10PLY	31.6	10.7	-	-	-	18.0	80	3415	85	3085	IHRT27K
265/70R18	116S	600AB		32.6	10.7	-	-	-	16.0	44	2756	-	-	IHRT05K
LT265/70R18	124/121Q	-	E/10PLY	32.6	10.7	-	-	-	18.0	80	3525	95	3195	IHRT30K
275/55R20	117T	600AB		31.8	11.1	-	-	-	16.0	50	2833	-	-	IHRT08K
LT275/55R20	120/117Q	-	E/10PLY	31.8	11.1	-	-	-	18.0	80	3085	35	2835	IHRT33K
275/60R20	116T	600AB		32.9	10.9	-	-	-	16.0	50	2756	-	-	IHRT09K
LT275/60R20	123/120Q	-	E/10PLY	32.9	10.9	-	-	-	18.0	80	3415	85	3085	IHRT34K
275/65R18	116T	600AB		32.0	10.9	-	-	-	16.0	44	2756	-	-	IHRT06K
LT275/65R18	123/120Q	-	E/10PLY	32.0	10.9	-	-	-	18.0	80	3415	85	3085	IHRT31K
LT275/65R20	126/123Q	-	E/10PLY	34.0	10.9	-	-	-	18.0	80	3750	15	3415	IHRT35K
LT275/70R18	125/122Q	-	E/10PLY	33.1	10.9	-	-	-	18.0	80	3640	5	3305	IHRT32K
285/45R22	114Q	600AB		32.0	11.2	-	-	-	16.0	50	2601	-	-	IHRT10K
LT285/70R17	126/123Q	-	E/10PLY	32.7	11.4	-	-	-	18.0	80	3750	15	3415	IHRT28K
LT305/55R20	125/122Q	-	F/12PLY	33.2	12.4	-	-	-	18.0	80	3640	5	3305	IHRT36K