alloys

[tim_annetts]

is it true if u get bigger alloys that wat ur standared wheels r the speedo get frown out?? because i have standered 13" steel wheels and was thinking of getting 15" alloys

[Ben (lurk75)]

yes it is true

but 15"s arent too big an increase to cause problems worth worrying about.

17" are bad though.

[Dave]

the speedo works on the rolling radius od the wheel so when you change the wheel you change the radius goin from a 13 to a 15 shouldn't be too bad as overall with the smaller tyre wall it won't change it by that much so i've been told!

[Dicko]

its not too serious with 15s. 13s have a big profile tyre like 65m, and 15s wud usualy have something like 45mm profile tyre. so thats 1/2 the difference made up just from the tyres.

[greg00uk]

but ive got a digital dash, and ive gone from 15s to 17s, how do i get this calibrated? :?

[mikeoxford]

but ive got a digital dash, and ive gone from 15s to 17s, how do i get this calibrated? :?

on the digidash try flicking the red switch and see if its any closer.

if not dont panic

you can get speedos calibrated at a garage. wat they do is change the gear in the gearbox where the speedo sender screws in.