Rolls-Royce Archives
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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Graph of tyre load in pounds versus inflation pressure in pounds per square inch for various tyre sizes.

Identifier  ExFiles\Box 170\3\  img178
Date  7th December 1938 guessed
  
LOAD - LBS.
1000
800
600
400
200
0
INF. #/IN²
20
22
24
26
28
30
32
34
36
4 PLY
4 PL
4.75
5.00
5.25
5.50
5.75
6.00
4.5-17
860#
955#
  
  


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