Tires

Tire Faults

(1) Uneven tire wear :
(A) Rapid wear at both shoulders (Front or rear tires) 
(B) Rapid wear at center (Front or Rear tires)
(C) Rapid wear at inner shoulder (Front tires) 
(D) Rapid wear at outer shoulder (Front tires)
(E) Rapid wear at rear inner tires.
(F) Cracked treads.
(G) Bold spots on tires.
(H) Scalloped wear of tires.
(I) Feathered edge tires.                                                  
(2) Front tires wobble at high speed.
(3) Rear tires wobble at low speed.
(4) Tire noise at high speed. 

 



(A) Rapid wear at both shoulders (Front or rear tires)                              
Possible Causes :
           (1) Regular driving with tires under inflated.
         (2) Regular high speed driving on curves.

  
 


(B) Rapid wear at center (Front or rear tires)
Possible Causes : 
1. Regular driving with tires over inflated



© Rapid wear at inner shoulder (Front tires)  

Possible Causes : 

1. Wheel alignment incorrect (Excessive camber angle) 





 

(D) Rapid wear at outer shoulder (Front tires)
Possible Causes :
1. Taking curves at excessive speeds.  


 


(E) Rapid wear at rear inner tire.
Possible Causes :      
1. Respective rear axle out of alignment.




(F) Cracked treads.
Possible Causes :  
1. Regular driving with under inflated tires.
2. Driving at excessive speeds.                                  3. Use of expired tires (Older than four years.)                                 

 


(G) Bold spots on tires.    
Possible Causes :
1. Wheels unbalanced (Dynamically or statically)
2. Wheel alignment incorrect.
3. Uneven (grabby) brakes. 
4. Over-inflated tires.
5. Out of round brake drums. 



(H) Scalloped wear of tires

Possible Causes :
1. Suspension components worn or out of alignment.




 

 

(I) Feathered edge tires (surface looks sheared in or out) 
Possible Causes :
1. Wheel alignment incorrect(Excessive toe in or toe out)

(2) Front tires wobble at high speed.
Possible Causes :
1. Internal reinforcement wire structure of the tire damaged or deformed.

(3) Rear tires wobble at low speed.
Possible Causes :
1. Internal reinforcement wire structure of the tire damaged or deformed.
    
(4) Tire noise at high speed.
Possible Causes :
 1. Use of tires with different tread patterns or of different manufacturers(with different friction coefficients.

2. Incorrect wheel balance.