|
In Reply to: Pilot Sport Y vs Z rated posted by Paul E on November 11, 2001 at 15:05:15:
Basically, it says this:
Speed Rating - Miles/Hour - Kilometers/Hour - Typical Use
N=87 MPH, 140km/h, Spare Tires
U=124 MPH, 200km/h
P=93 MPH, 150km/h
H=130 MPH, 210km/h, Sport Sedans
Q=99 MPH, 160km/h, Winter, LT Tires
V=149 MPH, 240km/h, Sports Cars
R=106 MPH, 170km/h, LT Tires
Z=149 MPH, 240km/h and over, Sports Cars
S=112 MPH, 180km/h
W=168 MPH, 270km/h, Exotic Sport Cars
T=118 MPH, 190km/h
Y=186 MPH, 300km/h, Exotic Sport Cars
*Today, the Z-speed rating is the only speed rating that is still branded “within” the tire size, as in P225/50ZR16. All other speed ratings are shown in the tire’s service description.
When Z-speed rated tires were first introduced, they were thought to reflect the highest speed rating that would ever be required. Since that time the automotive industry has found it necessary to add W- and Y-speed ratings (indicated in the tire’s service description) to identify the tires that meet the needs of new vehicles that have extremely high, top speed capabilities.
Tire Miles/Hour
------------------------------
P225/50ZR16 149+
P225/50ZR16 91W 168
P225/50ZR16 91Y 186
So, there you have it. W and Y rated tires have been tested to be safe up to higher speeds.
Hope this helps,
MNM3/4
© 1997 -
2009
Jump Internet Inc. All rights reserved.
