Tire Speed Ratings (was dunlop D60A2)

["Mike Miller" <JoMi@msn.com>]

---snip---
It was my understanding, (and I'm sure I'll get corrected if I'm wrong
<grin>) that unless you're planning on pushing the envelope fairly far,
you should need to worry about the tire's speed rating.  After all, an
"H" rating is something like 113 MPH.  For the funny tire wear, you
might want to double-check the air pressure.  I've found that D60's like
it much better a bit above the pressure marked on your car or the
sidewall of the tire.  I usually run ~40psi on mine.  YMMV

Unless you're planning to spend alot of time at or above 113 you
shouldn't need to go to "V" rated tires.  ----snip----


Here are the specs for tire speed ratings.

•X=Maximum sustained speed
 
•Q=100 MPH, 160km/h 
•S=112 MPH, 180km/h 
•T=118 MPH, 190km/h 
•U=124 MPH, 200km/h 
•H=130 MPH, 210km/h 
•V=149 MPH, 240km/h 
•W=168 MPH, 270km/h 
•Y=186 MPH, 300km/h 
•Z=149 MPH, 240km/h and over