Tyre sizes affecting speedo reading.
03 February 2003, 02:33 PM
#1
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I am waiting on some OZ Super L's 17x7. I am currently rinning 16" wheels with 205/50/r16 tyres on my 95 wrx import.
The Speedo is reading correct afaik as the car was SVA'd with the 16" wheels on it.
When I change to the Super L's will the extra inch affect the speedo readings or can I compensate by using a lower profile tyre. If so which Size tyres would I need?#
many thanks
Pete
The Speedo is reading correct afaik as the car was SVA'd with the 16" wheels on it.
When I change to the Super L's will the extra inch affect the speedo readings or can I compensate by using a lower profile tyre. If so which Size tyres would I need?#
many thanks
Pete
03 February 2003, 03:36 PM
#2
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Pete,
Pay attention now!!
You will need 215/40 17 tyres to keep the same rolling radius and therefore keep the speedo reading correctly
See: http://www.miata.net/garage/tirecalc.html
Pay attention now!!
You will need 215/40 17 tyres to keep the same rolling radius and therefore keep the speedo reading correctly
See: http://www.miata.net/garage/tirecalc.html
03 February 2003, 04:33 PM
#3
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Cheers Dyney 
Btw who was the person iI need to chat to about the turbo timer plug under the sterring colum?
Btw who was the person iI need to chat to about the turbo timer plug under the sterring colum?
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