Caterpillar Performance Handbook, January 2017, SEBD0351-47

Standard Cold Inflation Pressures ● WheelTractor-Scrapers — Bias and Radial Ply

Tires

Optimal pressures may vary depending on specific applications and working conditions. Always consult your local tire supplier for operating pressures.

WHEELTRACTOR-SCRAPERS — Bias Ply

Inflation Pressure

Titan

Yokohama

Ply Rating

Model

Tire Size

Front

Rear

Front

Rear

kPa 400 414 414

psi

kPa 400 345 345

psi

kPa

psi

kPa

psi

33.25-29 33.25-29 33.25-29

38 38 38 52

621H 621K 623K 657G

58 60 60

58 50 50

37.5-39

448

448

65

65

WHEELTRACTOR-SCRAPERS — Radial Ply

Inflation Pressure

Michelin

Bridgestone/Firestone

Star Rating

Model

Tire Size

Front

Rear

Front

Rear

kPa

psi

kPa

psi

kPa 448 462 462 483 552 552 552 552 621

psi

kPa 393 434 434 483 552 552 552 552 621

psi

33.25R29 33.25R29 33.25R29 33.25R29 37.25R35 37.25R35 37.25R35 37.25R35 40.5/75R39

621H 621K 623K 627K 631G 631K 637G 637K 657G

65 67 67 70 80 80 80 80 90

57 63 63 70 80 80 80 80 90

★★ ★★ ★★ ★★ ★★ ★★ ★★ ★★ ★★

448 448 476 552 552 552 552 600

400 414 476 476 476 503 503 524

65 65 69 80 80 80 80 87

58 60 69 69 69 73 73 76

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Edition 47 32-61