im going to get 15" ford sierra wheels tomorrow hopefully from a scrap yard although they asked me what other details do i have?

i know the offset - 35
I know the size - 15" (as the 14s I got the other weekend are a little tight)

many thanks

4x108 pcd

apparently thats not what he needs?

something like this

??/15/35

thats tyre details afaik

eg 195/40/15

195 = width in mm

40 = sidewall depth in mm

15 = wheel diameter in inches

The book says sierra is fine ET 38-41

As i'm using the upright of the cortina i'm using the ET19 at front.

I'm heading for 195/65R14 ET 30 at rear, track will be 1508 mm
Front also with spacer 10mm.

The 195/65R14 is to gain some hight, as i'm using the sierra DOHC.
The diametre is about 600 mm

185/65 R 14 mm will give 580 mm

Grtz T

quote:

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Originally posted by Hammerhead
thats tyre details afaik

eg 195/40/15

195 = width in mm

40 = sidewall depth in mm

15 = wheel diameter in inches

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ok it's still the sidewall depth just not in mm

I think if you use 40 profile tyres your speedo will over read. ie the cicumference of the wheel with 195 40 15 inch tyres is smaller than the standard Sierra 185 60 14 tyres. at 195 50 profile on 15 inch its slightly smaller. with 40 profile its significantly smaller. Can you caliobrate your speedo to compensate? I did the sums but my spreadsheet is a mess and need to tidy it up.

Ian