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How do I know I have a run-flat tires?

9/21/2012

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Many new cars are equipped with run-flat tires. These tires give the ability to keep driving on a tire that has lost air. Typically, self-supporting tires maintain vehicle mobility for 50 miles at speeds up to 55 mph. The exact ratings will vary by tire and vehicle. 


Car dealers often fail to mention to customers that their tires are run-flats or may mistakenly indicate that a car has run-flat tires when it does not. To find out whether your car has run-flat tires, check the sidewall. 


The International Organization for Standardization (ISO) has developed a universal symbol for self-supporting run-flat tires, represented by a flat tire continuing down the road: 



In addition, tire manufacturers have special branding to indicate run-flat capability. The following is a list of the branding used by manufacturers we carry:  

  • Bridgestone:  RFT
  • Continental:  SSR
  • Dunlop:  DSST or DSST CTT or DSST RunOnFlat
  • Firestone:  RFT
  • Goodyear:  EMT or RunOnFlat
  • Kumho:  XRP
  • Michelin:  ZP 
  • Pirelli:  RFT
  • Yokohama:  ZPS
See an example of a tire with run-flat branding here (Dunlop SP Sport 600 DSST CTT - Original Equipment the Nissan GT-R). The DSST CTT branding is near the 12 o'clock position on these Dunlop car tires. The ISO pictogram is immediately to the right.



Original Blog Link: http://blog.tirerack.com/blog/bens-blog/how-to-tell-if-you-have-run-flat-tires

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    Richie F.

    Owner and Operator of Go Tire LLC.  Located on 315 Bloomfield Ave in Newark, New Jersey.  Specialist with Automotive services from tire repair to customization...

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