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Everything posted by SmartMan

  1. I found this interesting. My 451 has the design 1 alloy wheels shown here... front rims are 4.5" in width and therefore according to the table here... The minimum front tyre width would be 145mm and maximum 175mm with the ideal being 155mm or 165mm.I have 145mm fitted to mine instead of the 155mm fitted as standard but this table proves its ok.I did wonder why some 450s had 145mm fitted as standard but this is because in those cases they had narrower rims then my 451s 4.5" to begin with see here... Did some googling and this is the best reason I can find why the minimum and maximum tyre sizes for a particular rim are not "ideal"."For example, appropriate tire widths for 6.0" rim are: 175 mm, 185 mm, 195 mm and 205 mm. The minimum tire width 175 mm designates the safe tire width, 185mm and 195 mm are ideal tire widths and 205 mm is the maximum tire width. The maximum tire width is not ideal because the tire tread is wider than the inside rim bead."In my case the minimum 145 mm tyre widths fitted to the 4.5" rims are the safe tyre width.