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Suspension

Tyres 1
Tyres 2

History of Wheels 1
History of Wheels 2
History of Wheels 3
History of Wheels 4
History of Wheels 5
History of Wheels 6

Tyre label
History Sec. Wheels
Winter Tyre
Snow Chains
All-weather Tyres
Where to mount new
    tyres?

Radial Ply Tyre
Cross-ply Tyre
Low Cross-section
Tyre fitting
Additional information
Wheel Balancing
Bus Wheel Balancing
Tyre Production 1
Tire Production 2
Speedlimits
Wheel Load Limits
Roller Reststance 1
Stiction
Emergency Running 1
Emergency Running 2
Tyre Press. Control 1
Tyre Control 2
Tyre Press. Control 3
Rims
Alloy Rim
Alloy Rim (production)
Drop-center Rim
Spoked wheel
Rim Hump
Rim (truck)
Emergency Wheel
Offset
Wheel Positions
Wheel-measuring
Wheel Base
Steering Offset
Castor
Steering axis incl.
Wheel Alignment
Relative Steering Angle
Track
Camber
Obl./Side slip angle
Axle Alignment 1
Axle Alignment 2
Axle Alignment 3

Tyre Calculation
Inch -> mm
Slip
Axle Load Distrib.
Payload Distrib.
Roller Resistance 2

Wheels
Wheels 2


         

  The history of wheels 3







Previous page

Motor car tyres at that time, were pumped up to a pressure of 5 bar. This is not the only reason why they were a menace for the motorists. They had to be checked before each trip, which they often enough didn't survive. In the course of a race, up to 50 tyre-changes were quite normal. For this reason, it was considered a blessing, when the removable wheel-rim was finally introduced in 1905.

Hardly 100 kms without a puncture ...

Tyre-codes and the respective standardisation have been around since 1903 (Friedrich Veith). Continental first supplied tyres with a tread in 1904 (see above pictures). Minor tyre damages could possibility be repaired on the spot, those with more serious damages had to be sent in for an uncertain duration. New tyres were only bought in exceptional cases. In spite of the amount that was paid for other repairs and the short service intervals, the tyres were considered to be highest expense. Sometimes more was spent on tyres than was for fuel.

To increase the mileage performance fivefold, the low-pressure tyres were introduced in 1920. Almost just as important, was the mixing in of a product, which is simply described as 'soot'. This is not simply that which is removed from the kiln after the burning, but an industrially made substance with a carbon content of at least 80%.

In the beginning, solid rubber tyres (see pictures) were also superior as far as load-carrying was concerned, thus, they were still used on trucks for a long time. Even into the second half of the last century, they could still be found on carny-trailers and circus wagons. The pneumatic tyres were not suitable for trucks, due to the heavy loads of up to five tons that they were transporting. Unfortunately, also the solid rubber tyres were not free from wear and tear, particularly when they became heated.

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