可否請問一下 有人使用過
Goodyear EFGP & Nito NT830
不知道兩者的感受比 如何
麻煩有人願意分享
感謝
個人是205/60/R16的車胎
正在考慮這兩個.....
atche001 wrote:
真懷疑你真的使用過NT830...(恕刪)
NT830是日本胎,用日規來比較,夠公平了吧?
ウェットグリップ性能=濕抓評級
EFGP全系列拿A
https://www.goodyear.co.jp/products/tires/effper/effper.html
NT830只拿C甚至是D
http://www.nittotire.co.jp/tires/nt830/
那到底是誰濕抓好?
另外,如果你認為磨耗是NT830的弱項,
我只能說這方面EFGP更弱一點點。
atche001 wrote:
NT830的乾濕抓地力可是有口皆碑的(濕抓NT830:AA VS EFGP:A)恕刪)
敢問你知道這個評級是來自"Uniform Tire Quality Grade (UTQG) Standards"的嗎?
關於UTQG這個評級系統,有些重點值得看看,轉載自Tire Rack:
Traction Grades
UTQG Traction Grades are based on the tire's straight line wet coefficient of traction as the tire skids across the specified test surfaces. The UTQG traction test does not evaluate dry braking, dry cornering, wet cornering, or high speed hydroplaning resistance.
The Traction Grade is determined by installing properly inflated test tires on the instrumented axle of a "skid trailer." The skid trailer is pulled behind a truck at a constant 40 mph over wet asphalt and wet concrete test surfaces. Its brakes are momentarily locked and the axle sensors measure the tire's coefficient of friction (braking g forces) as it slides. Since this test evaluates a sliding tire at a constant 40 mph, it places more emphasis on the tire's tread compound and less emphasis on its tread design.
看畢,你認為這系統的評級有多大代表性?
atche001 wrote:
所以輪胎上UTQG...(恕刪)
似乎你還沒有看懂

上列輪胎商網頁內的“ウェットグリップ性能”(濕抓評級,即是EFGP的A和NT830的C/D),
是日規下http://www.jatma.or.jp/labeling/測試出來的等級,
而不是你所說的“輪胎廠商對自己產品的評比”!
另外,不敢說UTQG的Traction grading全沒可信度,
只是當你了解過它的測試方式(上邊highlighted in red的部分),
不禁會產生疑問,有多大程度它能反映現實!
建議你從頭細閱上面的回覆,再來討論。


























































































