This radial size is the "equivalent" to 5.60 x 15, but its circumference
is smaller than that of the bias-ply. That's quite OK, but there will be
an effect on the RPM at a given road speed. You might want to check that
out, as many MGA drivers are a little concerned already about RPM at
highway speeds.
I can't recall the formula for calculating this, but you can work it out
by measuring the C of the bias ply, dividing into 5280 to get the number
of turns of the tire per mile. THen do it for the radial and compare.
Work in the rear-axle ratio and you will get the revs per mile. I have a
lot of these numbers already worked out. If you're curious, tell me your
axle ratio and I'll check my charts
Bob
On Thu, 10 Jul 1997 15:35:56 -0600 (MDT) Kevin Sullivan
<kevins@borris.khoros.unm.edu> writes:
>
>I just put a set of 165-15 Dunlop SP-20s on. I think they're just a
>little wider than 5.60x15s but the closest you can get.
>
>
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