| Author | Message | ||
     Garrett1998s1 |
Whats the letter in tire size stand for? Is there a difference in a 120/70X17 and a 120/70Z17 ? | ||
| Barker |
A letter designation identifying the tire's high speed durability on an indoor test wheel. | ||
| Spiderman |
Z has a different speed rating than X from http://www.underbonesphilippines.com/ubp/index.php ?option=com_content&task=view&id=113&PHPSESSID=0ba 6c7bfe0a5bc931b4be63144663b11 QUOTE --------------------- The alphanumeric hieroglyphics on a tire's sidewall offer a variety of info. Size can appear in inch, metric and/or alphanumeric denominations. All three interpret the size in terms of its width, aspect ratio and diameter of the intended rim. Here 160 is the cross-section width in mm; 90 is the aspect ratio (the relationship of the tire's height from the rim to the road to its width, expressed as a percentage of section width); H is the speed rating. An S-rated tire is designed to cope with sustained speeds up to 112 mph. An H-rated goes up to 130 mph, a V rated is to 150 mph, and a Z-rated tire is will go more than 150 mph. ---------------- I have never heard of a X rating in tires before? | ||
| Rich |
http://www.tirerack.com/tires/tiretech/techpage.js p?techid=35 | ||
| Cmm213 |
Its the speed rating of the tire, I believe z is the fastest? | ||
| Pwnzor |
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. M 81 mph 130 km/h N 87 mph 140km/h Temporary Spare Tires P 93 mph 150 km/h Q 99 mph 160 km/h Studless & Studdable Winter Tires R 106 mph 170 km/h H.D. Light Truck Tires S 112 mph 180 km/h Family Sedans & Vans T 118 mph 190 km/h Family Sedans & Vans U 124 mph 200 km/h H 130 mph 210 km/h Sport Sedans & Coupes V 149 mph 240 km/h Sport Sedans, Coupes & Sports Cars W 168 mph 270 km/h Exotic Sports Cars Y 186 mph 300 km/h Exotic Sports Cars | ||
| Loki |
You know this got me to wondering about all the extra numbers and letters.....  This was lifted from Metzeler site only for reference. | ||
| Garrett1998s1 |
Looking at getting tires from tire express. Continental Road attacks. http://www.tireexpress.com/category.cfm?Category=2 220 Have heard from people on here these are good tires are these the right ones??? |
