Tirex LLC
Tires For The 21st Century
Inner
Tubes		 Cámaras de Aire Câmaras Inner Tubes - Chinese
TUBE CONVERSION CHART
Bias Passenger Inner Tube Conversion Chart		 Ziggurat
RADIAL
PASSENGER INNER TUBES
P-METRIC * ALPHA NUMERIC
GROUP SIZE 80
SERIES		 75
SERIES		 70
SERIES		 60
SERIES		 METRIC
SERIES		 78
SERIES		 70
SERIES		 60
SERIES		 NUMERIC
DR12/13/14 P145/80
R.B.D-12		       135R.-12       4.50-12
  P155/80
R.B.D-12		       145R.-12       5.30-12
          155R.-12       5.20-14
                  6.50-14
          145R.-13       7.00-14
          155R.-13       6-14
ER12/13     P165/70
R.B.D-12		           5.50-12
                  5.60-12
                  6.00-12
                  6-12
  P145/80
R.B.D-13		 P165/75
R.B.D-13		 P175/70
R.B.D-13		   165R.-13     AR60-13 5.60-13
  P155/80
R.B.D-13		 P175/75
R.B.D-13		           BR60-13 5.90-13
  P165/80
R.B.D-13		               6.00-13
                  6.15/155-13
FR13/14 P175/80
R.B.D-13		 P185/75
R.B.D-13		 P185/780
R.B.D-13		   175R.-13 AR78-13 AR70-13   6.40-13
  P185/80
R.B.D-13		 P195/75
R.B.D-13		 P195/70
R.B.D-13		     BR78-13 BR70-13   6.50-13
            CR78-13 CR70-13   6.70-13
                  7.00-13
  P175/80
R.B.D-14		 P175/75
R.B.D-14		 P185/70
R.B.D-14		 P205/60
R.B.D-14		 165R.-14 BR78-14 CR70-14   5.60-14
  P185/80
R.B.D-14		     P215/60
R.B.D-14		 175R.-14 CR78-14 DR70-14   6.00-14
          185R.-14 DR78-14     7.35-14
                  7-14
FR15 P155/80
R.B.D-15		 P175/75
R.B.D-15		     155R.-15 BR78-15     5.60-15
  P165/80
R.B.D-15		       165R.-15       5.90-15
          175R.-15       6.00-15
                  6.85-15
GR13/14/15     P205/70
R.B.D-13		   185R.-13   DR70-13    
          195R.-13        
    P185/75
R.B.D-14		 P195/70
R.B.D-14		 P225/60
R.B.D-14		 195R.-14 ER78-14 ER70-14 ER60-14  
    P195/75
R.B.D-14		 P205/70
R.B.D-14		     FR78-14 FR70-14    
    P205/75
R.B.D-14		 P215/70
R.B.D-14		     GR78-14 GR70-14   7.00-14LT#
                  7.9-14LT#
            ER78-14LT#     26x8.50
R.B.D-14LT#
                CR60-14  
                GR60-14  
  P195/80
R.B.D-15		 P185/75
R.B.D-15		 P195/70
R.B.D-15		 P195/60
R.B.D-15		 185R.-15 CR78-15 CR70-15 CR60-15 25x7.50
R.B.D-15#
    P195/75
R.B.D-15		 P205/70
R.B.D-15		 P205/60
R.B.D-15		 195R.-15 DR78-15 DR70-15 DR60-15  
    P205/75
R.B.D-15		   P215/60
R.B.D-15		   ER78-15 ER70-15 ER60-15  
            FR78-15 FR70-15    
            GR78-15      
KR14/15     P225/70
R.B.D-14		 P235/60
R.B.D-14		          
    P215/75
R.B.D-14		 P215/70
R.B.D-15		 P2205/60
R.B.D-15		 205R.-14   HR70-14 FR60-14 7.50-14
    P215/75
R.B.D-15		 P225/70
R.B.D-15		 P235/60
R.B.D-15		 215R.-14       8.25-14
    P225/75
R.B.D-14		     225R.-14       9.50-14
    P225/75
R.B.D-15		 P235/70
R.B.D-15		 P245/60
R.B.D-15		 205R.-15 HR78-15 GR70-15 GR60-15 7.35-15
    P235/75
R.B.D-14		     215R.-15 JR78-15 HR70-15 HR60-15 8.20-15
    P235/75
R.B.D-15		       LR78-15     8.55-15
MR14/15     P235/70
R.B.D-14		     HR78-14   JR60-14  
            JR78-14   LR60-14  
                MR60-14  
      P245/70
R.B.D-15		 P225/60
R.B.D-15		 225R.-15 NR78-15 JR70-15 LR60-15 8.90-15
      P225/70
R.B.D-15		 P275/60
R.B.D-15		 235R.-15   KR70-15 MR60-15 9.00-15
              LR70-15 NR60-15 9.15-15
* R=RADIAL; B=BIAS; D=DIAGONAL BELTED TIRE #APPLY TR B6 BUSHING
RADIAL TUBES ALSO FIT CORRESPONDING SIZE BIAS TIRES

SERVICE REMINDER
To avoid surface cracking, always store new or out-of-service tubes
in an airtight container (e.g., sealed box, trash bag, etc.).
Weather-checked tubes should not be placed in service.
 Bias Passenger Inner Tube Conversion Chart