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Technical Service Bulletins

DOUBLE COIN TECHNICAL BULLETIN ON RT600 225/70R19.5 RIM SPECIFICATIONS

Please be advised that the following guidelines should be followed when utilizing Double Coin RT600 tire in the size 225/70R19.5:

Double Coin RT600 225/70R19.5 are designed to Tire and Rim Association (TRA) specifications to meet standards for North America use in normal highway use. Included in these standards are rim dimension standards which include the following approved rim contours:
• 6.00″ / 6.00″ RW
• 6.75″ / 6.75″ RW

 As per TRA and Tire Industry standards, maintaining proper air pressure, adhering to speed and weight ratings for tires of this size will render long life and high performance.

If you have any questions concerning this or other Double Coin truck tires, please contact Double Coin/CMA Technical Services.

Double Coin/CMA Technical Services
1-888-226-5250
RADIAL PLY METRIC TIRES FOR TRUCK, BUSSES AND TRAILERS USED IN NORMAL HIGHWAY SERVICE
Tires Mounted on 15º Drop Center Rims
Tire and Rim Association Standard
GENERAL DATA
TIRE SIZE
DESIGNATION		 DESIGN
RIM
WIDTH		 DESIGN NEW TIRE MAXIMUM GROWN TIRE MINIMUM
SIZE
FACTOR		 MINIMUM
DUAL
SPACING		 APPROVED
RIM
CONTOURS
SECTION
WIDTH		 OVERALL DIAMETER OVERALL
WIDTH		 OVERALL DIAMETER
HIGHWAY
TREAD		 TRACTION
TREAD		 DEEP
TRACTION
TREAD		 HIGHWAY
TREAD		 TRACTION
TREAD		 DEEP
TRACTION
TREAD
19.5 RIM DIAMETER CODE – 70 SERIES
225/70R19.5 6.75″ 226mm
8.90″		 811mm
31.93″		 817mm
32.17″		 823mm
32.40″		 237mm
9.33″		 823mm
32.40″		 830mm
32.68″		 837mm
32.95″		 1021mm
40.20″		 254mm
10.00″		 6.00, 6.00RW,
6.75, 6.75RW

 

DOUBLE COIN TECHNICAL BULLETIN FOR 11R22.5 RLB400 SPEED RATING “L”

Double Coin Holdings, Ltd. (DCHL) certifies that the following product adheres to the designed specification listed in the North America Double Coin Data Book:

Product:
• RLB400 11R22.5 14 ply and 16 ply
Specification:
• 62MPH maximum speed rating “J”

 Regardless of the stamped data on the sidewall of the tire, as it pertains to speed rating, the tire is manufactured, designed and certified to meet the 75MPH max speed rating “L”. DCHL states it is acceptable to place the tire in the “L” speed rating category and will honor normal warranty and performance levels for the product.

If you have any questions concerning these or other guidelines for Double Coin TBR products, please contact Double Coin/CMA engineering.

Double Coin/CMA Technical Inquiry line
1-888-226-5250

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