February, iQi/ 
69 
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uWTOWN 
stand the KniFeTest 
EFORE you, its thick tough Goodrich Black 
Safety Tread slashed back, its sinewy, two- 
ply, rubber-saturated cable-cord body laid 
bare, stands a Silvertown Cord Tire. 
Before you stands the whole story of why 
tires wear, and tires wear out. 
For, contrary to common belief, tires wear out INSIDE 
—not outside —from internal frictional heat, rubbed 
up between the plies of the tire. 
Each extra ply means extra inside heat—extra 
wearing out of the tire 
Were you to put the knife test to all tires you would 
find three types of bodies 
Cotton fabric, swathed in five to seven plies. 
Thread cord, or web, (strings the size of a trout 
line, held parallel the circumference of the tire 
by interspaced cross-threads) gummed together in five to seven plies. 
Cable-cord, the unique, patent-protected, cross-wrapped, two-ply 
structure, found ONLY in Silvertown, the original cord tire. 
Mark well the sturdy size of Silvertown’s cable- 
cords, and that they are cross-wrapped into two 
plies and but two. Obviously Silvertown with 
but two plies must outlast many-ply tires with 
their multiplied inside heat. 
Out of this durability, and the resilience of 
those flexible cable-cords, comes Silvertown’s 
gasoline-saving economy, smoother riding com¬ 
fort, and prolonged mileage, you cannot afford 
to be without. 
Know Silvertowns by their graceful extra-size, 
and their RED DOUBLE DIAMONDS. 
The B. F. Goodrich Go., Akron, O. 
Also maker of the famous fabric tires 
Goodrich Black Safety Treads 
**Silvertowns make all cars high-grade ** 
10 Silvertown 
Cord X-cels 
1. Increased engine 
power. 
2. Smoother riding. 
3. Fuel saving. 
4. Speedier. 
5. Coast farther. 
6. Start quicker. 
7. Easier to guide. 
8. Give greater 
mileage. 
9. More resistive 
against puncture. 
10. Repaired easily 
and success/ullx). 
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