If you are thinking about what effect a different tire size will have on your
Amphi. here's a link to a Tire Calculator:
http://www.miata.net/garage/tirecalc.html
The original Amphi tires were 6.40 x 13. Looking at the Tire Size Chart at:
http://www.turbinecar.com/tires.htm
this crosses to a metric 80 Series tire of 165/80-13.
Starting with the 165/80-13, you can then play with other sizes. For instance,
you can get the "ricer" look (larger diameter wheel and small tire distance from
rim to tread) by going to a much larger wheel, like a 15". If you choose a
185/60-15 tire, then you will still stay close to the external form factor (OD
and width), so you won't have a problem with speedo error or the tire hitting
the body.
This opens up the possibility of using mag or wire wheels, or solid steel wheel
wheels. You might have a particular tire in mind, but it doesn't come in a
6.40-13. You could work backward from an available tire to a wheel that would
carry it and still fit the Amphi size requirements.
Why? Well, why not?
Ed
El Cajon
67 Rust Guppy
[Non-text portions of this message have been removed]
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