08-21-2009, 12:20 PM | #1 |
Master of All Things
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Z Rated tire differences
There are a lot of people that really don't know the differeance, I have heard people tell me that ALL Z rated tires are the same as far as how fast they are rated for.... NOT TRUE...not even close. SO after hearing this a couple of times here, I wanted to set the record straight......amd if you don't want to take my word for it......please take the time and do a little research of your own and confirm what follows, you will find or can find mostof this information on TireRack.com as that is where I found it, but none the less, its good info:
When Z-speed rated tires were first introduced, they were thought to reflect the highest tire speed rating that would ever be required, in excess of 240 km/h or 149 mph. While Z-speed rated tires are capable of speeds in excess of 149 mph, how far above 149 mph was not identified. That ultimately caused the automotive industry to add W- and Y-speed ratings to identify the tires that meet the needs of new vehicles that have extremely high top-speed capabilities. W rated 168 mph / 270 km/h Exotic Sports Cars Y rated 186 mph / 300 km/h Exotic Sports Cars While a Z-speed rating still often appears in the tire size designation of the tires below, such as 225/50ZR16 91W, the Z in the size signifies a maximum speed capability in excess of 149 mph, 240 km/h; the W in the service description indicates the tire's 168 mph, 270 km/h maximum speed. 225/50ZR16 in excess of 149 mph, 240 km/h 255/45ZR17 88W 168 mph, 270 km/h While a Z-speed rating still often appears in the tire size designation of the tires below, such as 285/35ZR19 99Y, the Z in the size signifies a maximum speed capability in excess of 149 mph, 240 km/h; the Y in the service description indicates the tire's 186 mph, 300 km/h maximum speed. Most recently, when the Y-speed rating indicated in a service description is enclosed in parentheses, such as 285/35ZR19 (99Y), the top speed of the tire has been tested in excess of 186 mph, 300 km/h indicated by the service description as shown below: 285/35ZR19 99Y 186 mph, 300 km/h 285/35ZR19 (99Y) in excess of 186 mph, 300 km/h Here is a speed rating chart for tires, you only tires to perform the way you drive or for the intended use. Why spend more than you have to. S- Up to 112mph T- Up to 118mph U- Up to 124mph H- Up to 130mph V- Up to 149mph Z- 149mph and over W- Up to 168mph Y- Up to 186mph I hope this will help someone when they are thinking of getting some new shoes for there Camaro, and not spending a lot of extra cash that really isn't needed. http://www.tirerack.com/tires/tirete....jsp?techid=35
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Last edited by Sir Nuke; 08-21-2009 at 06:43 PM. |
08-21-2009, 12:57 PM | #2 |
Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008
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good to know, can we make it a sticky
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08-21-2009, 01:42 PM | #3 |
Master of All Things
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I personnal would like that, it is accurate and good info. that people should know and take into consideration when buying performamce tires.
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08-21-2009, 03:08 PM | #4 |
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Still begs the question who will need tires rated as such on the Camaro? You will not reach such speeds in the 1/4 mile, most people will not reach such speeds on a road course, and if you reach such speeds on the street then obviously you don't care about anything much less what tires you have on the car.
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08-21-2009, 03:50 PM | #5 | |
Master of All Things
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Quote:
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08-21-2009, 04:00 PM | #6 |
Yep I'm back!
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Very useful info but the question i ask is why did they get out of alphabetical order. When Z first came out why wasn't it w or x or y? And where is X are they saving it for over 200mph.
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08-21-2009, 04:11 PM | #7 | |
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Quote:
http://www.tirerack.com/tires/tirete....jsp?techid=35 |
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08-21-2009, 04:35 PM | #8 |
Master of All Things
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true enough, which is where the biggest part of it came from, its good info that a lot of people need or at least should be aware of, which is why I posted it up.
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08-21-2009, 04:38 PM | #9 |
Master of All Things
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There is NO trying to figure out what is in some engineers minds, kind of like trying to figure out what goes through a womans mind! LOL WONDERS NEVER CEASE.
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08-21-2009, 04:56 PM | #10 |
Dances With Mustangs
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Just for future reference; if you're going to repost something written by someone else, acknowledge the source and provide links if possible to avoid plagiarism and/or possible copyright issues.
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Blue Angel is here!! 1SS/RS LS3 M6 IBM |
08-21-2009, 06:08 PM | #11 | ||
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modified and stickied
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08-22-2009, 09:55 AM | #12 |
Master of All Things
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Thanks Spike, I figured that this question would come up sooner or later, or some of our novices wouldn't want to ask, or it might never cross their minds........Thanks for Stickying it.
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08-22-2009, 12:15 PM | #13 |
Drives: 2014 Z/28 #82+#192, 18ZLE 66Nova Join Date: Oct 2008
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Thank you Spike it is good info for a lot of guys on this site.
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11-15-2009, 07:02 AM | #14 |
Drives: 2010 Camaro 2SS Join Date: Oct 2009
Location: Omaha, NE
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But what tires are stock?
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