What exactly does ZR on my tire stand for? - LS1TECH

Go Back   LS1TECH > CHASSIS, SUSPENSION, APPEARANCE > Wheels & Tires
Log In 
Search


Wheels & Tires
Forged | Billet | Cast | Radials | Slicks
Sponsored by
TireRack
Click Here


What exactly does ZR on my tire stand for?

Reply
 
Thread Tools Search this Thread
Old 03-31-2009, 11:41 PM   #1
Launching!
 
antsls1's Avatar
 
Trader Rating: 3
Join Date: Oct 2008
Location: Lagrange, GA
Posts: 296
Default What exactly does ZR on my tire stand for?

On the side of my tire it states 265 35 zr18 ihave always wondered what zr and xr stands for i know what it means but what does it stand for.
antsls1 is offline   Reply With Quote
Old 03-31-2009, 11:52 PM   #2
TECH Fanatic
 
wabmorgan's Avatar
 
Trader Rating: 0
Join Date: Dec 2005
Location: USS Enterprise 1701
Posts: 1,800
Send a message via MSN to wabmorgan Send a message via Yahoo to wabmorgan
Default

S -- 180km/h or 112mph

T -- 190km/h or 118mph

U -- 200km/h or 125mph

H -- 210km/h or 130mph

V -- 240km/h or 149mph

W(ZR) -- 270km/h or 168mph

Y(ZR) -- 300km/h or 186mph

ZR -- Above 300km/h or 186mph
wabmorgan is offline   Reply With Quote
Old 03-31-2009, 11:54 PM   #3
TECH Fanatic
 
wabmorgan's Avatar
 
Trader Rating: 0
Join Date: Dec 2005
Location: USS Enterprise 1701
Posts: 1,800
Send a message via MSN to wabmorgan Send a message via Yahoo to wabmorgan
Default

Opps.... just re-rad your post.... don't guess that helped.
wabmorgan is offline   Reply With Quote
Old 04-01-2009, 01:25 AM   #4
Launching!
 
antsls1's Avatar
 
Trader Rating: 3
Join Date: Oct 2008
Location: Lagrange, GA
Posts: 296
Default

Quote:
Originally Posted by wabmorgan View Post
Opps.... just re-rad your post.... don't guess that helped.
its ok man i was just curious what it actually stands for if it stands for anything at all but i am glad you no (or did ur research) what it means cuz i didnt no exactly the mph it can with-hold but all of it is interestin. if anyone posts a reply to my threads they are always helping me. thanks man. i am glad someone out there knows what it is.
antsls1 is offline   Reply With Quote
Old 04-01-2009, 04:17 AM   #5
TECH Fanatic
 
Unertl42's Avatar
 
Trader Rating: 59
Join Date: Sep 2007
Location: Bettendorf, IA
Posts: 1,003
Default

nothing, it is just a way of rating them
__________________

2001 NBM SS #2537
LS2, 18" CCW SP500

I bet this thing's got nitrous. This got nitrous?

No. Nitrous is for ****. It's got cubic inches.
Unertl42 is offline   Reply With Quote
Old 04-01-2009, 04:23 AM   #6
TECH Apprentice
 
RiceEaterZ's Avatar
 
Trader Rating: 6
Join Date: Dec 2008
Location: Honolulu, HI *RiceTown USA*
Posts: 338
Default

It Means you can go Nice and Fast without worrying about a blowout. *Nails are exempt*
__________________
ApocalypseM6 z/28: A Few Stickers:400hp
College student Wishing For CCW505's + 383 stroker
"these cars were meant to be driven by young women or raped by real men. they're too cheap to get any real respect."
RiceEaterZ is offline   Reply With Quote
Old 04-01-2009, 11:50 AM   #7
TECH Apprentice
 
question's Avatar
 
Trader Rating: 2
Join Date: Feb 2007
Location: Boomtown
Posts: 370
Default

Pretty sure its Z RATED. Thats where the Z R comes from. Maybe not - but it sounds good right?
__________________
Transam-360rwhp, 370ft lbs
Pro 5.0, QTP Longtubes, 3" True Duals w/ X dumped, SLP Lid, LS6 Intake, Comp Hardened Pushrods, LS6 valve springs, Jegs rear end cover, !free mods, and a tune.
question is offline   Reply With Quote
Old 04-01-2009, 11:52 AM   #8
Internet Mechanic
 
BlackScreaminMachine's Avatar
 
Trader Rating: 17
Join Date: May 2005
Location: Wallingford CT
Posts: 9,839
Default

Just a rating, basically if you have a tire that is not designed for the speed your driving, then slow the heck down.
__________________
2002 NBM Trans Am SOLD!

http://ls1tech.com/forums/vehicle-cl...l#post17273103
BlackScreaminMachine is offline   Reply With Quote
Old 04-01-2009, 12:41 PM   #9
TECH Enthusiast
 
Trader Rating: 1
Join Date: Sep 2007
Location: Barboursville, WV
Posts: 610
Send a message via AIM to AR15 guy
Default

Z is the speed rating. R stands for radial. Y and W rated tires will also have ZR in the numbers because Z was believed to be the highest possible speed rating. Then the W and Y's came out. So for whatever reason they leave the ZR in there.
__________________
1995 Trans Am- 3.42, m6, Ram HDX, 1LE elbow, Moroso CAI...real mods coming soon.
AR15 guy is offline   Reply With Quote
Old 04-01-2009, 02:36 PM   #10
TECH Fanatic
 
udienow's Avatar
 
Trader Rating: 18
Join Date: Jul 2007
Location: Palatine, IL
Posts: 1,019
Default

Quote:
Originally Posted by AR15 guy View Post
Z is the speed rating. R stands for radial.
He's got it.
__________________
udienow is offline   Reply With Quote
Old 04-01-2009, 04:23 PM   #11
TECH Enthusiast
 
Trader Rating: 1
Join Date: Sep 2007
Location: Barboursville, WV
Posts: 610
Send a message via AIM to AR15 guy
Default

I should hope so. I sell tires for a living
__________________
1995 Trans Am- 3.42, m6, Ram HDX, 1LE elbow, Moroso CAI...real mods coming soon.
AR15 guy is offline   Reply With Quote
Old 07-26-2009, 04:09 PM   #12
mlr
Staging Lane
 
Trader Rating: 0
Join Date: Jan 2009
Posts: 51
Default

thanks
mlr is offline   Reply With Quote
Old 07-26-2009, 04:11 PM   #13
mlr
Staging Lane
 
Trader Rating: 0
Join Date: Jan 2009
Posts: 51
Default

don't think the cts-v has to have the zr i can drop down a rating
mlr is offline   Reply With Quote
Old 07-26-2009, 09:06 PM   #14
TECH Veteran
 
hitmanws6's Avatar
 
Trader Rating: 20
Join Date: Dec 2008
Location: Orange, CA
Posts: 4,049
Default

Quote:
Originally Posted by mlr View Post
don't think the cts-v has to have the zr i can drop down a rating
im pretty sure they cane with Z rated tires from the factory. you can drop a speed rating to V. i would not recommend going any lower than that
__________________
96 WS6 Clone LT1 PARTOUT*** SPONSORED BY WS6 RACING***PHK http://www.ls1tech.com/forums/parts-...1-partout.html
hitmanws6 is offline   Reply With Quote
Old 07-27-2009, 12:44 AM   #15
TECH Fanatic
 
BobDoLe's Avatar
 
Trader Rating: 11
Join Date: Jul 2006
Posts: 1,500
Default

zealous ricer
BobDoLe is offline   Reply With Quote
Old 07-27-2009, 09:32 AM   #16
FormerVendor
 
Trader Rating: 0
Join Date: Jul 2009
Posts: 68
Default

AR 15 has it correct. Z is the speed rating or and the R stands for radial. Most Y and W will say ZR as well, just like he said.
Tread Depot is offline   Reply With Quote
Old 07-27-2009, 09:56 AM   #17
TECH Resident
 
HAZ-Matt's Avatar
 
Trader Rating: 8
Join Date: Nov 2004
Location: Houston
Posts: 748
Send a message via AIM to HAZ-Matt
Default

When they created the original ratings Z was the highest and nobody thought that street cars would end up with tires that needed anything better. When the newer cars needed tires to handle speeds better than "149+" they broke the Z category down with W and Y. Street cars probably won't need street tires with ratings significantly above 186mph so perhaps this rating system will stay safe.
__________________
Matt
2001 Formula

FQuick Garage SOM FQuick Group FullThrottleV6
HAZ-Matt is offline   Reply With Quote
Old 07-31-2009, 04:10 PM   #18
Staging Lane
 
Trader Rating: 0
Join Date: Jul 2009
Posts: 69
Default

its a secret
fast93z28 is offline   Reply With Quote
Reply


Similar Threads
Thread Thread Starter Forum Replies Last Post
WTB: 2 OE Wheels ZR1 17x11 chrome ChiroStudent Parts Wanted 2 06-30-2015 07:37 PM
what does BFH stand for? Formula313 LT1-LT4 Modifications 2 06-22-2014 09:38 AM
aftermarket ZR1 replica wheel question BFK86 Wheels & Tires 13 02-15-2013 02:09 PM
11" ZR1 Offset? ATLSS Wheels & Tires 76 04-21-2008 02:14 PM
What does GXP stand for? LeadFootGXP LS4 Performance 9 05-14-2007 10:52 AM


Tags
265, codes, guide, numbers, rated, rating, ratings, rr, speed, stand, tire, tires, tyre, versus, zr

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


 

All times are GMT -5. The time now is 02:24 PM.