Its hard to find the speed ratings for tires--I just need some that are safe to 100 miles an hour.
2007-01-13 03:43:58 · 4 answers · asked by Nemo the geek 7 in Cars & Transportation ➔ Safety
David P gave you the right answer but don't forget they rate the tires safe for that speed for a period of 3 hours continueous. unless your going to drive at that speed for more than that it is a sales gimmick. if your only going to do it for a short time why pay for a high speed rated tire. but alway pay attention to the traction capabilities of the tire and the load rating. these keep you from slipping on corners and having blowouts from overloading. type "R" is your answer.
2007-01-13 12:20:35 · answer #1 · answered by ben e 3 · 0⤊ 0⤋
Beginning in 1991, the speed symbol denoting a fixed maximum speed capability of new tires must be shown only in the speed rating portion of the tire's service description, such as 225/50R16 89S. The most common tire speed rating symbols, maximum speeds and typical applications are shown below:
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
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 168 mph 270 km/h Exotic Sports Cars
Y 186 mph 300 km/h Exotic Sports Cars
While a Z-speed rating still often appears in the tire size designation of these tires, 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.
2007-01-13 04:38:07 · answer #2 · answered by David P 3 · 3⤊ 0⤋
It's either "Z" or "ZR" rated tires that are rated at over 100 mph, but I know it's at least a "Z" rating, can't remember if "ZR" rating is an actual rating.
2007-01-13 03:49:35 · answer #3 · answered by Tugon 2 · 0⤊ 1⤋
as long as you do the speed limit you will be safe.
2007-01-13 04:03:14 · answer #4 · answered by shepardman1 4 · 0⤊ 0⤋