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Coefficient f
r
of Rolling Friction Steel Wheel Pneumatic Tires
Wheel =
2.5 x 36 steel
4 x 24 steel
4.00 – 18 4-ply
4 x 36 steel
4.00 – 30 4-ply
4.00 – 36 4-ply
5.00 – 16 4-ply
6 x 28 steel
6.00 – 16 4-ply
6.00 – 16 4-ply*
7.50 – 10 4-ply†
7.50 – 16 4-ply
7.50 – 28 4-ply
8 x 48 steel
7.50 – 36 4-ply
9.00 – 10 4-ply†
9.00 – 16 6-ply
Inflation press, lb/in
2
=
Load, lb =
Friction on Concrete =
Friction on Bluegrass sod =
Friction on Tilled loam =
Friction on Loose sand =
Friction on Loose snow 10-14 deep =
* Skid-ring tractor tire
† Ribbed tread tractor tire
All other pneumatic tires with implement-type tread
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