Volkswagen Touran Service Manual: Tire Sidewall Swelling

Volkswagen Touran Service Manual / Wheel and Tire Guide Information / Tires, Evaluating / Tire Sidewall Swelling

A swelling in the flank of the tire indicates that the substructure of the carcass has been damaged.

Typical causes for such damage include, for example, driving over curbs at a sharp angle.

Pinching the carcass of a tire this way can damage the carcass.

The substructure of the tire is stretched so far that individual fibers in the carcass may break.

The extent of the damage depends on the speed of impact, the angle of impact, the air pressure, the axle load and the type of obstacle.

Evidence of Pinching on the Sidewall of a Tire -arrows-

Note

Driving over curbs must be avoided!

When it cannot be avoided, curbs should be driven over very slowly at the bluntest possible angle.

Interior View of a Tire with a Punctured Carcass.

Due to a severe impact, the carcass was pinched on the rim flange and is ruptured in the contact patch.

Inside Tire Damage Due to Impact Damage (Double Rupture)

Double rupture -arrows- caused by pinching when driving over a curb. Often not detectable from outside.

Cuts

Cut Caused by a Sharp-Edged Obstacle -arrow-.

Wear Spots

A wear spot is a flat spot on the tread of the tires that can be caused by extreme braking maneuvers on subsurface such as asphalt. At th ...

Foreign Object Damage

Driving over hard, pointed objects like nails, screws and the like can pierce the tire. This always leads to tire damage. ...

Other materials:

Volkswagen Touran Owners Manual. An economic driving style
First read and observe the introductory information and safety warnings Changing gear earlier In principle, the highest gear is always the most economical gear. A rule of thumb for most vehicles: at a speed of 30 km/h (18 mph) drive in 3rd gear, at 40 km/h (25 mph) in 4th gear and at 50 km/ ...

Volkswagen Touran Owners Manual. Opening and closing the bonnet
Fig. 172 The bonnet release lever is located in the driver side footwell. Fig. 173 Release lever for opening the bonnet in the radiator grille First read and observe the introductory information and safety warnings Opening the bonnet The lever for opening the bonnet can only be operated ...