Wheel & Tyre Sizes

[John Wood]

The early coupe I'm restoring was fitted with some after market wolfrace alloys, the tyre size fitted was 205/60x13. Being an early 4-speed it would originally have had 175/70x13.

How do you work out the tyre sizes appropriate to wheel diameter to make sure the speedo reads correctly? Is there a formula?



1975 TR7
1977 TR7 Sprint

[stevie_a]

<font color="teal"><b>Try this </b></font id="teal">[url="http://www.tyresave.co.uk/tyresize.html"]<font color="red"><b><u>HERE</u></b></font id="red">[/url]

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<font size="4"><font color="green"><i>If it's not broke don't fix it.</i></font id="green"></font id="size4">

http://www.smallbiztranscripts.co.uk

[John Wood]

I love that. Just spent 30 mins of my life playing with it.

1975 TR7
1977 TR7 Sprint

[stevie_a]

<font color="teal"><b>Glad to help...[;)]</b></font id="teal">

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<font size="4"><font color="green"><i>If it's not broke don't fix it.</i></font id="green"></font id="size4">

http://www.smallbiztranscripts.co.uk

[Bendder]

You could play with this one also.

http://www.roversd1.nl/sd1web/



Mark
1977 TR7 FHC
1978 TR7 FHC
1980 TR7 DHC
1980 Rover SD1 4.0L

[Hoops]

Another if you want to compare offset as well-

http://www.willtheyfit.com/