Caterpillar Performance Handbook, January 2017, SEBD0351-47

Tire Specifications

Wheel Tractor-Scrapers

MODEL TIRE SIZE

PLY RATING/ STAR RATING*

MODEL TIRE SIZE

PLY RATING/ STAR RATING*

TYPE

TYPE

621K 623K

631K 637K

E-3

★★

33.25R29 ◀

E-3 E-3

37.25R35 ◀

E-3

★★

★★

657G

33.25-29

32

627K

40.5/75R39 ◀ E-3 *Manufacturer uses star ( ★ ) rating system instead of ply rating. ◀ Recommended tire. ★★

33.25R29 ◀

E-3

★★

24

Edition 47 24-13