俺的车是2012款GMC Terrain,AWD,随车轮胎型号235/60R17。最近换雪胎,咨询了几家店都是这个型号的雪胎。最后选在Dealer那里买了Michelin的Latitude X-ice X2的雪胎,Dealer当时问我什么车,什么型号的轮胎了。给的报价单上没有型号,结果装上后发现,Dealer给装的225/65R17的雪胎。 4 h G6 y. e! y' s8 z: S. S. i/ Q3 k$ ]3 X$ G. L
235/60R17雪胎换成225/65R17的雪胎,宽度减少了10mm,厚度增加了一点,所以轮胎的最大外径也相应增加,周长增加,实际的车速要比车辆显示的速度稍微快一点。我的理解是轮胎宽度减小,轮胎着地面积减小,抓地能力想当然的减少。想问问各位专业高手,235/60R17雪胎换成225/65R17的雪胎是否负面影响雪地性能?抓地性能降低?今天和Dealer讨论了一番,他说抓地性能没有减少,相反Cut雪地更加有利;这家Dealer把Terrain的235/60R17都给换成225/65R17的雪胎了。6 i+ _) N3 z+ v7 G: J% j
本帖最后由 kingsnake 于 2012-11-14 20:29 编辑 ! a @: J0 f( P9 |9 ~
( X5 i+ ^4 n3 B3 n" l
•Fat tire: You can float on top of the snow if you don't have to go through it (e.g. snow buggies). You have a larger contact patch with the ground for summer. 5 |2 O2 Z3 z$ D. R; m" g' p•Skinny tire: Will find it's way through the snow to find some pavement to grab onto. 3 o4 y; V9 t% j6 m; l( j6 G
•Studded tire: Works great on ice but has no effect on snow/slush/other stuff., v8 b7 z/ {( r- b: O" k