Roadmaster Commercial Truck and Bus Tyres
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![Roadmaster tyres]( "Roadmaster tires")
Section width (mm): 275
Section width (in): 11 -12
Aspect ratio (%): 70
Rim diameter (in): 22.5 - 24.5
Speed Rating: K
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![Roadmaster tyres]( "Roadmaster tires")
Section width (mm): 315
Aspect ratio (%): 80
Rim diameter (in): 22.5
Speed Rating: J 
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![Roadmaster tyres]( "Roadmaster tires")
Section width (mm): 245 -275
Aspect ratio (%): 70
Rim diameter (in): 17.5 - 22.5
Speed Rating: K,L 
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![Roadmaster tyres]( "Roadmaster tires")
Section width (mm): 385 -425
Aspect ratio (%): 65
Rim diameter (in): 22.5
Speed Rating: K -
![Roadmaster tyres]( "Roadmaster tires")
Section width (mm): 315
Aspect ratio (%): 80
Rim diameter (in): 22.5
Speed Rating: K -
![Roadmaster tyres]( "Roadmaster tires")
Section width (mm): 385 -425
Aspect ratio (%): 65
Rim diameter (in): 22.5
Speed Rating: K -
![Roadmaster tyres]( "Roadmaster tires")
Section width (mm): 285 -295
Section width (in): 11
Aspect ratio (%): 75
Rim diameter (in): 22.5 - 24.5
Speed Rating: L 
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![Roadmaster tyres]( "Roadmaster tires")
Section width (mm): 295
Section width (in): 11
Aspect ratio (%): 75
Rim diameter (in): 22.5
Speed Rating: L -
![Roadmaster tyres]( "Roadmaster tires")
Section width (in): 11
Rim diameter (in): 22.5 - 24.5
Speed Rating: K -
![Roadmaster tyres]( "Roadmaster tires")
Section width (mm): 225 -245
Aspect ratio (%): 70
Rim diameter (in): 19.5
Speed Rating: L,M
