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how to work out alloy size





Sorry if this seems really basic but ive never bought alloys before!!!!

Anyway, i know about the different sizes (14", 16",etc.) but am stumped when people talk about tyre sizes and wheel offset - 195/205 - whats that?!! :oops:

Also, if you get alloys that are bigger than your standards, surely your speedo will be out? how do you combat this?

if anyone could explain the different measurements thatd be cool!

Cheers,

steve
 

zedx19

ClioSport Club Member
  ST 225, PH1 172


For example 15x195x45

15 is the diameter of the rim, so 15 inch

195 is the width of the rim

45 is the thickness of the tyre on the rim, 45 being quite a low profile one!

Dunno about wheel ofset though but getting bigger alloys will affect your speedo but not by any radical change! If you go 2 inch above your original rim size, itll be out by a couple of mph!
 


Quote: Originally posted by zedx19 on 26 October 2002

For example 15x195x45

15 is the diameter of the rim, so 15 inch

195 is the width of the rim

45 is the thickness of the tyre on the rim, 45 being quite a low profile one!

Dunno about wheel ofset though but getting bigger alloys will affect your speedo but not by any radical change! If you go 2 inch above your original rim size, itll be out by a couple of mph!



45 is the percentage of the width of the tyre that the tyre is in height!!!!!!
 


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