Moon Dance

輪胎規格 如果寫 205 60 15H (分別代表widtth, profile, wheel size, speed rating)
在www.tirerack.com 輸入車子的型號就可以查到輪胎的規格
這個網站上會有原廠配備,同規格的best seller, 及同規格的輪胎
網站上有很多很有幫助的文章
使用者的review和網站統整而成的survey也很好用

重要的輪胎規格
Uniform Tire Quality Grade (UTQG)
由U.S Department of Transportation (DOT) National Highway Traffic Safety Administration (NHTSA)制定的標準
1.Treadwer grades: Treadwear grades are an indication of a tire's relative wear rate. 數字愈高代表輪胎磨平所花的時間愈久,但耐久的代價是會犧牲抓地力

2. Traction Grades: based on the tire's straight line wet coefficient of traction as the tire skids across the specified test surfaces

Traction Grades Asphalt g force Concrete g force
AA Above 0.54 0.41
A Above 0.47 0.35
B Above 0.38 0.26
C Less Than 0.38 0.26
摩擦係數高的代價大概會是比較耗油吧

3.Temperature (Resistance) Grades: indicates the extent to which heat is generated/ or dissipated
Temperature Grades Speeds in mph
A Over 115
B Between 100 to 115
C Between 85 to 100

4.Speed Rating: speed ratings were established to match the speed capability of tires with the top speed capability of the vehicles to which they are applied (歐系制定的標準)
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


參考資料來源: www.tirerack.com
www.etyres.co.uk