Change in rolling diameter, and effect on speedo.

**Indie** · 07-09-2012 10:05 PM

I've just picked up a set of wheels with tyres, and the overall diameter is around an inch more. Will this cause any problems, and what effect will it have on the accuracy of my speedo? Cheers.

**EKVTIR-T** · 07-09-2012 10:10 PM

http://www.miata.net/garage/tirecalc.html

**mocchi** · 07-09-2012 10:11 PM

http://www.carbibles.com/tyre_size_calculators.html

se agua amigo

**Indie** · 08-09-2012 01:42 AM

Awesome, thanks.

I'm also trying to learn the stock diameter. Did the DC4 come with 195/60 R14 as standard?

**mocchi** · 08-09-2012 08:11 AM

check your door jamb

**JDM DC2R** · 08-09-2012 11:50 AM

Personally id just stay within 2% of the stock tire. Increasing height will affect acceleration.
When ever you mess with wheels or tires you need these 2 links. http://www.1010tires.com/tiresizecalculator.asp http://www.1010tires.com/WheelOffsetCalculator.asp