Volkswagen Polo Service & Repair Manual: Wear Spots
			
			
			
	
		| 
			
				| Wear spots are caused by a hard stop with locked wheels 
				whereby the rubber compound is abraded from the contact patch. |  
			
				| When the tires slide across the road surface, frictional 
				heat is generated which reduces the abrasion resistance on the 
				tread compound. |  
			
				| Even the most abrasion-resistant tread compound cannot 
				prevent wear spots which can occur during extreme braking. |  
			
				| Even ABS cannot completely prevent brief locking and the 
				resulting slightly flat spots. |  
			
				| The degree of abrasion is primarily dependent on the vehicle 
				speed, road surface and tire load. For clarification see the 
				following examples. |  
			
				| If a vehicle with locked front wheels is decelerated until 
				it comes to a stop, the abrasion of rubber on the post card 
				sized contact patch is approximately |  
			
				
				| from 57 km/h (35.41 mph) = 23.8 m braking distance, up to 
				2.0 mm, |  
			
				
				| from 75 km/h (46.60 mph) = 41.8 m braking distance, up to 
				3.3 mm, |  
			
				
				| from 92 km/h (57.16 mph) = 71.6 m braking distance, up to 
				4.8 mm. |  |  |  | 
	
		| 
			
				| Tires with this type of damage cannot be used and must be 
				replaced. |  |  | 
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				Rolling noise perceived by the human ear is caused by 
				vibrations transmitted from the noise source to the ear via the 
				air.
			
		
		
			
				Here we are interest ...
   
 
   Other materials:
Settings menu
   First read and observe the introductory 
information and safety warnings
	
		
		
	
	
		
			Settings menu 
			Function
		
	
	
		Language 
		Setting the language for the display texts and messages in the 
		navigation system.
	
	
		MFD data 
		Settings for which MFD data should ap ...
   
Severely Discharged Batteries, Charging with Battery Charger -VAS5900
   
	
		
		
			
				Special tools and workshop equipment 
				required
			
		
		
			
				
				Battery Charger -VAS5900-
			
		
		
			
				
				
					   
					WARNING
				
					
						Risk of injury. Follow all Warnings and Safety 
						Precautions. Refer to 
						→ ...
   
Wheel bolts
   Fig. 166 Changing a wheel: 
loosening the wheel bolts 
Fig. 167 Changing a wheel: 
anti-theft bolt and adapter 
First read and observe the introductory 
information and safety warnings
Only the spanner delivered with the vehicle should be used to loosen the 
wheel bolts.
Only loosen the whee ...
   
 
	 
	
	
		
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