<VV> Stock tirez

Dennis & Debbie PLEAU ddpleau at msn.com
Sat Mar 25 14:12:59 EST 2006


185-80-13 is about as close as you can get size wise to the tires which originally came on a 66-69 Corvair these days.  They are getting a little harder to find but they are available.  If people want to use wider sticky tires there's always improved stock.

Dennis
  ----- Original Message ----- 
  From: Padgett<mailto:pp2 at 6007.us> 
  To: virtualvairs at corvair.org<mailto:virtualvairs at corvair.org> 
  Sent: Saturday, March 25, 2006 9:42 AM
  Subject: Re: <VV> Stock tirez



  >The CORSA rulez say "Current examples of acceptable tires size 
  >designations are:
  185-80-13, 195-70-13, 205-70-13, 185-75-13, 175-75-13, BR-78-13,
  650-13, 700-13, etc."

  Interesting that a quick look at TireRack.com turns up one 185-80-13 
  (Kumho) for passenger cars and none for any of the other sizes listed, in 
  fact the only at all sporty size found that meets the 23" diameter 
  requirement with any selection is a 185-70-13 (12 choices) is not on the 
  list. The highest speed rating is a T (118 mph) and the lowest wear rating 
  (indicator of hardness) is a 420 which is pretty hard. The 185/70 has a 
  lower load capacity (95) than any of the listed tires but is well suited to 
  a 5.5" rim.
  http://www.tirerack.com/tires/Compare1.jsp?width=185/&ratio=70&diameter=13<http://www.tirerack.com/tires/Compare1.jsp?width=185/&ratio=70&diameter=13>

  So obviously the rule is a bit out of date. What I would suggest is 
  combining the rule for car and truck wheels "Any wheel rims may be used as 
  long as width and diameter remain stock (5 1/2 x 13 for cars and 5 x 14 for 
  trucks) and track may be
  no more than one inch greater than stock."
  to
  "wheels may be either 13" or 14" diameter and no more than 5.5" wide"  
  This does not change anything that is not already there, just eliminates 
  the separation.

  Keep the "Any DOT tire with an aspect ratio of 70 or above, a wear rating 
  180 and
  above, and that measures 23 diameter or larger unloaded at 32 psi." Though 
  I would change "32 psi" to "the rated tire pressure" since 32 psi has not 
  been a limit for over a decade.

  an alternative would be to allow either 5.5x13 or 5x14 wheels on any stock 
  vehicle. This would preserve the "only stock sizes permitted" while 
  allowing a greater choice for those who can only afford one set.

  Personally, I prefer stock to improved stock classes for autocrossing. The 
  speeds and the stresses on the car are both lower which makes it a good 
  entry level class that also preserves the car.

  Finally TireRack list thirty-six choices for 195/70/14s including some 
  American brands and several that are H speed rated.
  http://www.tirerack.com/tires/Compare1.jsp?width=195/&ratio=70&diameter=14<http://www.tirerack.com/tires/Compare1.jsp?width=195/&ratio=70&diameter=14>




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