I have a 5th gen and im currently running Z rated tires right now.... i was wondering if it mattered whether i got a W rated tire or i should stick with a Z when i get my new tires. Thanks

 

W(ZR) 270km/h or 168mph

ZR Above 300km/h or 186mph

i choose z's

 

anyone else?

 

Z Rated~!!! can't beat that...for daily car~!!! Toyo Proxes T1-S!!!!!!!!!!!

 

I think you are wrong, it goes like this:

Speed Rating - Miles/Hour - Kilometers/Hour - Typical Use
N=87 MPH, 140km/h, Spare Tires
P=93 MPH, 150km/h
Q=99 MPH, 160km/h, Winter, LT Tires
R=106 MPH, 170km/h, LT Tires
S=112 MPH, 180km/h
T=118 MPH, 190km/h
U=124 MPH, 200km/h
H=130 MPH, 210km/h, Sport Sedans
V=149 MPH, 240km/h, Sports Cars
Z=149 MPH, 240km/h and over, Sports Cars
W=168 MPH, 270km/h, Exotic Sport Cars
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.

Miles/Hour Kilometers/Hour
P225/50ZR16 149+ 240+
P225/50ZR16 91W 168 270
P225/50ZR16 91Y 186 300

While all Z-speed rated tires are capable of speeds of 149 mph and above, prior to the W- and Y-speed ratings were identified in the service, how far above 149 mph was not identified.

Prior to 1991, the most popular speed ratings were “S,” “H” and “V.” However, while the speed capabilities of S- and H-rated tires still indicate the same speeds as before, the V-speed rating has been modified. Previously a V-speed rated tire with the “V” branded “within” the tire size indicated that the tire was capable of 130+ miles per hour as indicated below:
Miles/Hour Kilometers/Hour
P225/50SR16 112 180
P225/50HR16 130 210
P225/50VR16 130+ 210+


Today’s new V-speed rated tires are always identified in the tires service description:
Miles/Hour Kilometers/Hour
P225/50R16 91V 149 240

Go to http://www.tirerack.com for more info

[Modified by VTI, 6:21 PM 11/3/2002]


[Modified by VTI, 6:25 PM 11/3/2002]

 

Z-rated, V-rated, W-rated,... Who cares. It's just a speed safety rating. Anything V rated or better is fine. When's the last time you had your Prelude up to 149mph or higher? Never. (And if you did, the speed safety rating of your tires should be the least of your safty concerns...)

Andrew

 

The only reason im asking is because im about to order parada spec 2's from tirerack, but they have only the W rated available.... whereas tires.com have Z rated tires .... just wondering which tire to order, both are same price including shipping...

 

I don't think we could tell the difference in z or w rated tires since the compounds are very sticky and you would only notice at the tires limits which most of us never will do.