26 BULLETIN 931, U. S. DEPARTMENT OF AGRICULTURE. 



Of 161 men who now use pneumatic tires — 

 159 prefer pneumatics. 

 2 prefer solids. 

 Of 1ST men who now use solid tires — 

 49 prefer pneumatics. 

 136 prefer solids. 



2 prefer pneumatics in front and solids in rear. 



Of 336 men who now use pneumatics in front and solids in rear — 

 191 prefer pneumatics. 

 100 prefer solids. 

 45 prefer pneumatics in front and solids in rear. 



In all 24 per cent now use pneumatics, 27 per cent use solids, and 49 

 per cent use pneumatics in front and solids in the rear. HoVever, ex- 

 perience has caused 58 per cent to decide that pneumatics are best for 

 their conditions, 35 per cent that solids are best, and 7 per cent that 

 pneumatics in front and solids in rear are best. 



The kind of tires which a man considers best depends considerably 

 on the size of his truck. The kinds which the owners of machines of 

 different sizes prefer are as follows : 



Of 70 owners of 1-ton and f-ton trucks — 

 64 prefer pneumatics. 

 6 prefer solids. 

 Of 481 owners of 1-ton trucks- 

 279 prefer pneumatics. 

 162 prefer solids. 

 40 prefer pneumatics in front and solids in rear. 

 Of 90 owners of lj-ton and l|-ton trucks — 

 44 prefer pneumatics. 

 42 prefer solids. 

 4 prefer pneumatics in front and solids in rear. 

 Of 43 owners of 2-ton trucks — 

 12 prefer pneumatics. 

 28 prefer solids. 



3 prefer pneumatics in front and solids in rear. 



RELIABILITY. 



The reliability of a motor truck, as that of any other machine, has 

 a very decided effect upon its profitableness. If a truck is out of 

 commission for several days at a time when its services are needed 

 and when its owner is depending upon it to help him through a busy 

 time it can scarcely be considered a profitable machine for him to 

 own. Likewise, if a great deal of time is lost on the road on account 

 of motor and tire trouble, breakage, and other mechanical difficulties, 

 this loss and annoyance may overcome all the advantages attending 

 its use. 



In order to obtain information as to the reliability of motor trucks 

 for farm use these truck owners were asked to give both the number 

 of days their trucks had been out of commission when needed during 

 the past year and the percentage of the time lost while using them. 



