EBR 1190 SX Owner's Manual page 106

See Figure 32. The location of tread wear indicator bars are
identified by "TWI‟ markings on the tire sidewalls.
When to Replace Tires
New tires are needed if any of the following conditions exist:
1. Tread wear indicator bars become visible on the
tread surfaces.
2. Tire cords or fabric become visible through cracked
sidewalls, snags, or deep cuts.
3. A bump, bulge, or split in the tire.
4. Puncture, cut, or other damage to the tire that
cannot be repaired.
Figure 32
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